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Update to Stockfish 16

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This commit is contained in:
Peter Osterlund 2023-07-01 12:18:01 +02:00
parent af1d725f27
commit 1a81595361
56 changed files with 1618 additions and 990 deletions
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BIN
DroidFishApp/src/main/assets/nn-ad9b42354671.nnue → DroidFishApp/src/main/assets/nn-5af11540bbfe.nnue
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4
DroidFishApp/src/main/cpp/stockfish/benchmark.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -16,6 +16,8 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "benchmark.h"
#include <fstream>
#include <iostream>
#include <istream>

34
DroidFishApp/src/main/cpp/stockfish/benchmark.h Normal file
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@ -0,0 +1,34 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BENCHMARK_H_INCLUDED
#define BENCHMARK_H_INCLUDED
#include <iosfwd>
#include <string>
#include <vector>
namespace Stockfish {
class Position;
std::vector<std::string> setup_bench(const Position&, std::istream&);
} // namespace Stockfish
#endif // #ifndef BENCHMARK_H_INCLUDED

2
DroidFishApp/src/main/cpp/stockfish/bitbase.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

6
DroidFishApp/src/main/cpp/stockfish/bitboard.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -27,7 +27,6 @@ namespace Stockfish {
uint8_t PopCnt16[1 << 16];
uint8_t SquareDistance[SQUARE_NB][SQUARE_NB];
Bitboard SquareBB[SQUARE_NB];
Bitboard LineBB[SQUARE_NB][SQUARE_NB];
Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
@ -82,9 +81,6 @@ void Bitboards::init() {
for (unsigned i = 0; i < (1 << 16); ++i)
PopCnt16[i] = uint8_t(std::bitset<16>(i).count());
for (Square s = SQ_A1; s <= SQ_H8; ++s)
SquareBB[s] = (1ULL << s);
for (Square s1 = SQ_A1; s1 <= SQ_H8; ++s1)
for (Square s2 = SQ_A1; s2 <= SQ_H8; ++s2)
SquareDistance[s1][s2] = std::max(distance<File>(s1, s2), distance<Rank>(s1, s2));

5
DroidFishApp/src/main/cpp/stockfish/bitboard.h
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -74,7 +74,6 @@ constexpr Bitboard KingFlank[FILE_NB] = {
extern uint8_t PopCnt16[1 << 16];
extern uint8_t SquareDistance[SQUARE_NB][SQUARE_NB];
extern Bitboard SquareBB[SQUARE_NB];
extern Bitboard BetweenBB[SQUARE_NB][SQUARE_NB];
extern Bitboard LineBB[SQUARE_NB][SQUARE_NB];
extern Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
@ -108,7 +107,7 @@ extern Magic BishopMagics[SQUARE_NB];
inline Bitboard square_bb(Square s) {
assert(is_ok(s));
return SquareBB[s];
return (1ULL << s);
}

2
DroidFishApp/src/main/cpp/stockfish/endgame.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

2
DroidFishApp/src/main/cpp/stockfish/endgame.h
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

65
DroidFishApp/src/main/cpp/stockfish/evaluate.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -36,7 +36,7 @@
#include "timeman.h"
#include "uci.h"
#include "incbin/incbin.h"
#include "nnue/evaluate_nnue.h"
// Macro to embed the default efficiently updatable neural network (NNUE) file
// data in the engine binary (using incbin.h, by Dale Weiler).
@ -82,20 +82,18 @@ namespace Eval {
eval_file = EvalFileDefaultName;
#if defined(DEFAULT_NNUE_DIRECTORY)
#define stringify2(x) #x
#define stringify(x) stringify2(x)
vector<string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory , stringify(DEFAULT_NNUE_DIRECTORY) };
#else
vector<string> dirs = { "<internal>" , "" , CommandLine::binaryDirectory };
#endif
for (string directory : dirs)
for (const string& directory : dirs)
if (currentEvalFileName != eval_file)
{
if (directory != "<internal>")
{
ifstream stream(directory + eval_file, ios::binary);
if (load_eval(eval_file, stream))
if (NNUE::load_eval(eval_file, stream))
currentEvalFileName = eval_file;
}
@ -111,12 +109,10 @@ namespace Eval {
(void) gEmbeddedNNUEEnd; // Silence warning on unused variable
istream stream(&buffer);
if (load_eval(eval_file, stream))
if (NNUE::load_eval(eval_file, stream))
currentEvalFileName = eval_file;
}
}
if (currentEvalFileName != eval_file)
currentEvalFileName = "";
}
/// NNUE::verify() verifies that the last net used was loaded successfully
@ -161,24 +157,24 @@ namespace Trace {
Score scores[TERM_NB][COLOR_NB];
double to_cp(Value v) { return double(v) / UCI::NormalizeToPawnValue; }
static double to_cp(Value v) { return double(v) / UCI::NormalizeToPawnValue; }
void add(int idx, Color c, Score s) {
static void add(int idx, Color c, Score s) {
scores[idx][c] = s;
}
void add(int idx, Score w, Score b = SCORE_ZERO) {
static void add(int idx, Score w, Score b = SCORE_ZERO) {
scores[idx][WHITE] = w;
scores[idx][BLACK] = b;
}
std::ostream& operator<<(std::ostream& os, Score s) {
static std::ostream& operator<<(std::ostream& os, Score s) {
os << std::setw(5) << to_cp(mg_value(s)) << " "
<< std::setw(5) << to_cp(eg_value(s));
return os;
}
std::ostream& operator<<(std::ostream& os, Term t) {
static std::ostream& operator<<(std::ostream& os, Term t) {
if (t == MATERIAL || t == IMBALANCE || t == WINNABLE || t == TOTAL)
os << " ---- ----" << " | " << " ---- ----";
@ -195,8 +191,8 @@ using namespace Trace;
namespace {
// Threshold for lazy and space evaluation
constexpr Value LazyThreshold1 = Value(3631);
constexpr Value LazyThreshold2 = Value(2084);
constexpr Value LazyThreshold1 = Value(3622);
constexpr Value LazyThreshold2 = Value(1962);
constexpr Value SpaceThreshold = Value(11551);
// KingAttackWeights[PieceType] contains king attack weights by piece type
@ -391,8 +387,8 @@ namespace {
Score Evaluation<T>::pieces() {
constexpr Color Them = ~Us;
constexpr Direction Down = -pawn_push(Us);
constexpr Bitboard OutpostRanks = (Us == WHITE ? Rank4BB | Rank5BB | Rank6BB
[[maybe_unused]] constexpr Direction Down = -pawn_push(Us);
[[maybe_unused]] constexpr Bitboard OutpostRanks = (Us == WHITE ? Rank4BB | Rank5BB | Rank6BB
: Rank5BB | Rank4BB | Rank3BB);
Bitboard b1 = pos.pieces(Us, Pt);
Bitboard b, bb;
@ -432,7 +428,7 @@ namespace {
int mob = popcount(b & mobilityArea[Us]);
mobility[Us] += MobilityBonus[Pt - 2][mob];
if (Pt == BISHOP || Pt == KNIGHT)
if constexpr (Pt == BISHOP || Pt == KNIGHT)
{
// Bonus if the piece is on an outpost square or can reach one
// Bonus for knights (UncontestedOutpost) if few relevant targets
@ -1050,52 +1046,41 @@ make_v:
/// evaluate() is the evaluator for the outer world. It returns a static
/// evaluation of the position from the point of view of the side to move.
Value Eval::evaluate(const Position& pos, int* complexity) {
Value Eval::evaluate(const Position& pos) {
assert(!pos.checkers());
Value v;
Value psq = pos.psq_eg_stm();
// We use the much less accurate but faster Classical eval when the NNUE
// option is set to false. Otherwise we use the NNUE eval unless the
// PSQ advantage is decisive and several pieces remain. (~3 Elo)
bool useClassical = !useNNUE || (pos.count<ALL_PIECES>() > 7 && abs(psq) > 1760);
// PSQ advantage is decisive. (~4 Elo at STC, 1 Elo at LTC)
bool useClassical = !useNNUE || abs(psq) > 2048;
if (useClassical)
v = Evaluation<NO_TRACE>(pos).value();
else
{
int nnueComplexity;
int scale = 1064 + 106 * pos.non_pawn_material() / 5120;
int npm = pos.non_pawn_material() / 64;
Color stm = pos.side_to_move();
Value optimism = pos.this_thread()->optimism[stm];
Value nnue = NNUE::evaluate(pos, true, &nnueComplexity);
// Blend nnue complexity with (semi)classical complexity
nnueComplexity = ( 416 * nnueComplexity
+ 424 * abs(psq - nnue)
+ (optimism > 0 ? int(optimism) * int(psq - nnue) : 0)
) / 1024;
// Return hybrid NNUE complexity to caller
if (complexity)
*complexity = nnueComplexity;
optimism = optimism * (269 + nnueComplexity) / 256;
v = (nnue * scale + optimism * (scale - 754)) / 1024;
// Blend optimism with nnue complexity and (semi)classical complexity
optimism += optimism * (nnueComplexity + abs(psq - nnue)) / 512;
v = (nnue * (945 + npm) + optimism * (150 + npm)) / 1024;
}
// Damp down the evaluation linearly when shuffling
v = v * (195 - pos.rule50_count()) / 211;
v = v * (200 - pos.rule50_count()) / 214;
// Guarantee evaluation does not hit the tablebase range
v = std::clamp(v, VALUE_TB_LOSS_IN_MAX_PLY + 1, VALUE_TB_WIN_IN_MAX_PLY - 1);
// When not using NNUE, return classical complexity to caller
if (complexity && (!useNNUE || useClassical))
*complexity = abs(v - psq);
return v;
}

13
DroidFishApp/src/main/cpp/stockfish/evaluate.h
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -31,7 +31,7 @@ class Position;
namespace Eval {
std::string trace(Position& pos);
Value evaluate(const Position& pos, int* complexity = nullptr);
Value evaluate(const Position& pos);
extern bool useNNUE;
extern std::string currentEvalFileName;
@ -39,20 +39,13 @@ namespace Eval {
// The default net name MUST follow the format nn-[SHA256 first 12 digits].nnue
// for the build process (profile-build and fishtest) to work. Do not change the
// name of the macro, as it is used in the Makefile.
#define EvalFileDefaultName "nn-ad9b42354671.nnue"
#define EvalFileDefaultName "nn-5af11540bbfe.nnue"
namespace NNUE {
std::string trace(Position& pos);
Value evaluate(const Position& pos, bool adjusted = false, int* complexity = nullptr);
void init();
void verify();
bool load_eval(std::string name, std::istream& stream);
bool save_eval(std::ostream& stream);
bool save_eval(const std::optional<std::string>& filename);
} // namespace NNUE
} // namespace Eval

2
DroidFishApp/src/main/cpp/stockfish/main.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

2
DroidFishApp/src/main/cpp/stockfish/material.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

6
DroidFishApp/src/main/cpp/stockfish/material.h
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -28,7 +28,7 @@ namespace Stockfish::Material {
/// Material::Entry contains various information about a material configuration.
/// It contains a material imbalance evaluation, a function pointer to a special
/// endgame evaluation function (which in most cases is NULL, meaning that the
/// endgame evaluation function (which in most cases is nullptr, meaning that the
/// standard evaluation function will be used), and scale factors.
///
/// The scale factors are used to scale the evaluation score up or down. For
@ -62,7 +62,7 @@ struct Entry {
uint8_t factor[COLOR_NB];
};
typedef HashTable<Entry, 8192> Table;
using Table = HashTable<Entry, 8192>;
Entry* probe(const Position& pos);

172
DroidFishApp/src/main/cpp/stockfish/misc.cpp
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@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -32,21 +32,26 @@
// the calls at compile time), try to load them at runtime. To do this we need
// first to define the corresponding function pointers.
extern "C" {
typedef bool(*fun1_t)(LOGICAL_PROCESSOR_RELATIONSHIP,
using fun1_t = bool(*)(LOGICAL_PROCESSOR_RELATIONSHIP,
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX, PDWORD);
typedef bool(*fun2_t)(USHORT, PGROUP_AFFINITY);
typedef bool(*fun3_t)(HANDLE, CONST GROUP_AFFINITY*, PGROUP_AFFINITY);
typedef bool(*fun4_t)(USHORT, PGROUP_AFFINITY, USHORT, PUSHORT);
typedef WORD(*fun5_t)();
using fun2_t = bool(*)(USHORT, PGROUP_AFFINITY);
using fun3_t = bool(*)(HANDLE, CONST GROUP_AFFINITY*, PGROUP_AFFINITY);
using fun4_t = bool(*)(USHORT, PGROUP_AFFINITY, USHORT, PUSHORT);
using fun5_t = WORD(*)();
using fun6_t = bool(*)(HANDLE, DWORD, PHANDLE);
using fun7_t = bool(*)(LPCSTR, LPCSTR, PLUID);
using fun8_t = bool(*)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
}
#endif
#include <cmath>
#include <cstdlib>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <string_view>
#include <vector>
#include <cstdlib>
#if defined(__linux__) && !defined(__ANDROID__)
#include <stdlib.h>
@ -68,7 +73,7 @@ namespace Stockfish {
namespace {
/// Version number or dev.
const string version = "15.1";
constexpr string_view version = "16";
/// Our fancy logging facility. The trick here is to replace cin.rdbuf() and
/// cout.rdbuf() with two Tie objects that tie cin and cout to a file stream. We
@ -151,13 +156,13 @@ string engine_info(bool to_uci) {
stringstream ss;
ss << "Stockfish " << version << setfill('0');
if (version == "dev")
if constexpr (version == "dev")
{
ss << "-";
#ifdef GIT_DATE
ss << GIT_DATE;
ss << stringify(GIT_DATE);
#else
const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
constexpr string_view months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
string month, day, year;
stringstream date(__DATE__); // From compiler, format is "Sep 21 2008"
@ -168,7 +173,7 @@ string engine_info(bool to_uci) {
ss << "-";
#ifdef GIT_SHA
ss << GIT_SHA;
ss << stringify(GIT_SHA);
#else
ss << "nogit";
#endif
@ -185,8 +190,6 @@ string engine_info(bool to_uci) {
std::string compiler_info() {
#define stringify2(x) #x
#define stringify(x) stringify2(x)
#define make_version_string(major, minor, patch) stringify(major) "." stringify(minor) "." stringify(patch)
/// Predefined macros hell:
@ -298,21 +301,94 @@ std::string compiler_info() {
/// Debug functions used mainly to collect run-time statistics
static std::atomic<int64_t> hits[2], means[2];
constexpr int MaxDebugSlots = 32;
void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; }
void dbg_hit_on(bool c, bool b) { if (c) dbg_hit_on(b); }
void dbg_mean_of(int v) { ++means[0]; means[1] += v; }
namespace {
template<size_t N>
struct DebugInfo {
std::atomic<int64_t> data[N] = { 0 };
constexpr inline std::atomic<int64_t>& operator[](int index) { return data[index]; }
};
DebugInfo<2> hit[MaxDebugSlots];
DebugInfo<2> mean[MaxDebugSlots];
DebugInfo<3> stdev[MaxDebugSlots];
DebugInfo<6> correl[MaxDebugSlots];
} // namespace
void dbg_hit_on(bool cond, int slot) {
++hit[slot][0];
if (cond)
++hit[slot][1];
}
void dbg_mean_of(int64_t value, int slot) {
++mean[slot][0];
mean[slot][1] += value;
}
void dbg_stdev_of(int64_t value, int slot) {
++stdev[slot][0];
stdev[slot][1] += value;
stdev[slot][2] += value * value;
}
void dbg_correl_of(int64_t value1, int64_t value2, int slot) {
++correl[slot][0];
correl[slot][1] += value1;
correl[slot][2] += value1 * value1;
correl[slot][3] += value2;
correl[slot][4] += value2 * value2;
correl[slot][5] += value1 * value2;
}
void dbg_print() {
if (hits[0])
cerr << "Total " << hits[0] << " Hits " << hits[1]
<< " hit rate (%) " << 100 * hits[1] / hits[0] << endl;
int64_t n;
auto E = [&n](int64_t x) { return double(x) / n; };
auto sqr = [](double x) { return x * x; };
if (means[0])
cerr << "Total " << means[0] << " Mean "
<< (double)means[1] / means[0] << endl;
for (int i = 0; i < MaxDebugSlots; ++i)
if ((n = hit[i][0]))
std::cerr << "Hit #" << i
<< ": Total " << n << " Hits " << hit[i][1]
<< " Hit Rate (%) " << 100.0 * E(hit[i][1])
<< std::endl;
for (int i = 0; i < MaxDebugSlots; ++i)
if ((n = mean[i][0]))
{
std::cerr << "Mean #" << i
<< ": Total " << n << " Mean " << E(mean[i][1])
<< std::endl;
}
for (int i = 0; i < MaxDebugSlots; ++i)
if ((n = stdev[i][0]))
{
double r = sqrtl(E(stdev[i][2]) - sqr(E(stdev[i][1])));
std::cerr << "Stdev #" << i
<< ": Total " << n << " Stdev " << r
<< std::endl;
}
for (int i = 0; i < MaxDebugSlots; ++i)
if ((n = correl[i][0]))
{
double r = (E(correl[i][5]) - E(correl[i][1]) * E(correl[i][3]))
/ ( sqrtl(E(correl[i][2]) - sqr(E(correl[i][1])))
* sqrtl(E(correl[i][4]) - sqr(E(correl[i][3]))));
std::cerr << "Correl. #" << i
<< ": Total " << n << " Coefficient " << r
<< std::endl;
}
}
@ -373,8 +449,10 @@ void* std_aligned_alloc(size_t alignment, size_t size) {
#if defined(POSIXALIGNEDALLOC)
void *mem;
return posix_memalign(&mem, alignment, size) ? nullptr : mem;
#elif defined(_WIN32)
#elif defined(_WIN32) && !defined(_M_ARM) && !defined(_M_ARM64)
return _mm_malloc(size, alignment);
#elif defined(_WIN32)
return _aligned_malloc(size, alignment);
#else
return std::aligned_alloc(alignment, size);
#endif
@ -384,8 +462,10 @@ void std_aligned_free(void* ptr) {
#if defined(POSIXALIGNEDALLOC)
free(ptr);
#elif defined(_WIN32)
#elif defined(_WIN32) && !defined(_M_ARM) && !defined(_M_ARM64)
_mm_free(ptr);
#elif defined(_WIN32)
_aligned_free(ptr);
#else
free(ptr);
#endif
@ -409,11 +489,30 @@ static void* aligned_large_pages_alloc_windows([[maybe_unused]] size_t allocSize
if (!largePageSize)
return nullptr;
// We need SeLockMemoryPrivilege, so try to enable it for the process
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hProcessToken))
// Dynamically link OpenProcessToken, LookupPrivilegeValue and AdjustTokenPrivileges
HMODULE hAdvapi32 = GetModuleHandle(TEXT("advapi32.dll"));
if (!hAdvapi32)
hAdvapi32 = LoadLibrary(TEXT("advapi32.dll"));
auto fun6 = (fun6_t)(void(*)())GetProcAddress(hAdvapi32, "OpenProcessToken");
if (!fun6)
return nullptr;
auto fun7 = (fun7_t)(void(*)())GetProcAddress(hAdvapi32, "LookupPrivilegeValueA");
if (!fun7)
return nullptr;
auto fun8 = (fun8_t)(void(*)())GetProcAddress(hAdvapi32, "AdjustTokenPrivileges");
if (!fun8)
return nullptr;
if (LookupPrivilegeValue(NULL, SE_LOCK_MEMORY_NAME, &luid))
// We need SeLockMemoryPrivilege, so try to enable it for the process
if (!fun6( // OpenProcessToken()
GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hProcessToken))
return nullptr;
if (fun7( // LookupPrivilegeValue(nullptr, SE_LOCK_MEMORY_NAME, &luid)
nullptr, "SeLockMemoryPrivilege", &luid))
{
TOKEN_PRIVILEGES tp { };
TOKEN_PRIVILEGES prevTp { };
@ -425,17 +524,18 @@ static void* aligned_large_pages_alloc_windows([[maybe_unused]] size_t allocSize
// Try to enable SeLockMemoryPrivilege. Note that even if AdjustTokenPrivileges() succeeds,
// we still need to query GetLastError() to ensure that the privileges were actually obtained.
if (AdjustTokenPrivileges(
if (fun8( // AdjustTokenPrivileges()
hProcessToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), &prevTp, &prevTpLen) &&
GetLastError() == ERROR_SUCCESS)
{
// Round up size to full pages and allocate
allocSize = (allocSize + largePageSize - 1) & ~size_t(largePageSize - 1);
mem = VirtualAlloc(
NULL, allocSize, MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
nullptr, allocSize, MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
// Privilege no longer needed, restore previous state
AdjustTokenPrivileges(hProcessToken, FALSE, &prevTp, 0, NULL, NULL);
fun8( // AdjustTokenPrivileges ()
hProcessToken, FALSE, &prevTp, 0, nullptr, nullptr);
}
}
@ -453,7 +553,7 @@ void* aligned_large_pages_alloc(size_t allocSize) {
// Fall back to regular, page aligned, allocation if necessary
if (!mem)
mem = VirtualAlloc(NULL, allocSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
mem = VirtualAlloc(nullptr, allocSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
return mem;
}
@ -517,7 +617,7 @@ void bindThisThread(size_t) {}
/// API and returns the best node id for the thread with index idx. Original
/// code from Texel by Peter Österlund.
int best_node(size_t idx) {
static int best_node(size_t idx) {
int threads = 0;
int nodes = 0;
@ -526,7 +626,7 @@ int best_node(size_t idx) {
DWORD byteOffset = 0;
// Early exit if the needed API is not available at runtime
HMODULE k32 = GetModuleHandle("Kernel32.dll");
HMODULE k32 = GetModuleHandle(TEXT("Kernel32.dll"));
auto fun1 = (fun1_t)(void(*)())GetProcAddress(k32, "GetLogicalProcessorInformationEx");
if (!fun1)
return -1;
@ -596,7 +696,7 @@ void bindThisThread(size_t idx) {
return;
// Early exit if the needed API are not available at runtime
HMODULE k32 = GetModuleHandle("Kernel32.dll");
HMODULE k32 = GetModuleHandle(TEXT("Kernel32.dll"));
auto fun2 = (fun2_t)(void(*)())GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
auto fun3 = (fun3_t)(void(*)())GetProcAddress(k32, "SetThreadGroupAffinity");
auto fun4 = (fun4_t)(void(*)())GetProcAddress(k32, "GetNumaNodeProcessorMask2");

42
DroidFishApp/src/main/cpp/stockfish/misc.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -28,6 +28,9 @@
#include "types.h"
#define stringify2(x) #x
#define stringify(x) stringify2(x)
namespace Stockfish {
std::string engine_info(bool to_uci = false);
@ -39,12 +42,13 @@ void std_aligned_free(void* ptr);
void* aligned_large_pages_alloc(size_t size); // memory aligned by page size, min alignment: 4096 bytes
void aligned_large_pages_free(void* mem); // nop if mem == nullptr
void dbg_hit_on(bool b);
void dbg_hit_on(bool c, bool b);
void dbg_mean_of(int v);
void dbg_hit_on(bool cond, int slot = 0);
void dbg_mean_of(int64_t value, int slot = 0);
void dbg_stdev_of(int64_t value, int slot = 0);
void dbg_correl_of(int64_t value1, int64_t value2, int slot = 0);
void dbg_print();
typedef std::chrono::milliseconds::rep TimePoint; // A value in milliseconds
using TimePoint = std::chrono::milliseconds::rep; // A value in milliseconds
static_assert(sizeof(TimePoint) == sizeof(int64_t), "TimePoint should be 64 bits");
inline TimePoint now() {
return std::chrono::duration_cast<std::chrono::milliseconds>
@ -85,32 +89,6 @@ static inline const union { uint32_t i; char c[4]; } Le = { 0x01020304 };
static inline const bool IsLittleEndian = (Le.c[0] == 4);
// RunningAverage : a class to calculate a running average of a series of values.
// For efficiency, all computations are done with integers.
class RunningAverage {
public:
// Reset the running average to rational value p / q
void set(int64_t p, int64_t q)
{ average = p * PERIOD * RESOLUTION / q; }
// Update average with value v
void update(int64_t v)
{ average = RESOLUTION * v + (PERIOD - 1) * average / PERIOD; }
// Test if average is strictly greater than rational a / b
bool is_greater(int64_t a, int64_t b) const
{ return b * average > a * (PERIOD * RESOLUTION); }
int64_t value() const
{ return average / (PERIOD * RESOLUTION); }
private :
static constexpr int64_t PERIOD = 4096;
static constexpr int64_t RESOLUTION = 1024;
int64_t average;
};
template <typename T, std::size_t MaxSize>
class ValueList {
@ -164,7 +142,7 @@ public:
inline uint64_t mul_hi64(uint64_t a, uint64_t b) {
#if defined(__GNUC__) && defined(IS_64BIT)
__extension__ typedef unsigned __int128 uint128;
__extension__ using uint128 = unsigned __int128;
return ((uint128)a * (uint128)b) >> 64;
#else
uint64_t aL = (uint32_t)a, aH = a >> 32;

36
DroidFishApp/src/main/cpp/stockfish/movegen.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -25,13 +25,21 @@ namespace Stockfish {
namespace {
template<GenType Type, Direction D>
ExtMove* make_promotions(ExtMove* moveList, Square to) {
template<GenType Type, Direction D, bool Enemy>
ExtMove* make_promotions(ExtMove* moveList, [[maybe_unused]] Square to) {
if (Type == CAPTURES || Type == EVASIONS || Type == NON_EVASIONS)
if constexpr (Type == CAPTURES || Type == EVASIONS || Type == NON_EVASIONS)
{
*moveList++ = make<PROMOTION>(to - D, to, QUEEN);
if constexpr (Enemy && Type == CAPTURES)
{
*moveList++ = make<PROMOTION>(to - D, to, ROOK);
*moveList++ = make<PROMOTION>(to - D, to, BISHOP);
*moveList++ = make<PROMOTION>(to - D, to, KNIGHT);
}
}
if (Type == QUIETS || Type == EVASIONS || Type == NON_EVASIONS)
if constexpr ((Type == QUIETS && !Enemy) || Type == EVASIONS || Type == NON_EVASIONS)
{
*moveList++ = make<PROMOTION>(to - D, to, ROOK);
*moveList++ = make<PROMOTION>(to - D, to, BISHOP);
@ -60,18 +68,18 @@ namespace {
Bitboard pawnsNotOn7 = pos.pieces(Us, PAWN) & ~TRank7BB;
// Single and double pawn pushes, no promotions
if (Type != CAPTURES)
if constexpr (Type != CAPTURES)
{
Bitboard b1 = shift<Up>(pawnsNotOn7) & emptySquares;
Bitboard b2 = shift<Up>(b1 & TRank3BB) & emptySquares;
if (Type == EVASIONS) // Consider only blocking squares
if constexpr (Type == EVASIONS) // Consider only blocking squares
{
b1 &= target;
b2 &= target;
}
if (Type == QUIET_CHECKS)
if constexpr (Type == QUIET_CHECKS)
{
// To make a quiet check, you either make a direct check by pushing a pawn
// or push a blocker pawn that is not on the same file as the enemy king.
@ -102,21 +110,21 @@ namespace {
Bitboard b2 = shift<UpLeft >(pawnsOn7) & enemies;
Bitboard b3 = shift<Up >(pawnsOn7) & emptySquares;
if (Type == EVASIONS)
if constexpr (Type == EVASIONS)
b3 &= target;
while (b1)
moveList = make_promotions<Type, UpRight>(moveList, pop_lsb(b1));
moveList = make_promotions<Type, UpRight, true>(moveList, pop_lsb(b1));
while (b2)
moveList = make_promotions<Type, UpLeft >(moveList, pop_lsb(b2));
moveList = make_promotions<Type, UpLeft, true>(moveList, pop_lsb(b2));
while (b3)
moveList = make_promotions<Type, Up >(moveList, pop_lsb(b3));
moveList = make_promotions<Type, Up, false>(moveList, pop_lsb(b3));
}
// Standard and en passant captures
if (Type == CAPTURES || Type == EVASIONS || Type == NON_EVASIONS)
if constexpr (Type == CAPTURES || Type == EVASIONS || Type == NON_EVASIONS)
{
Bitboard b1 = shift<UpRight>(pawnsNotOn7) & enemies;
Bitboard b2 = shift<UpLeft >(pawnsNotOn7) & enemies;
@ -264,7 +272,7 @@ ExtMove* generate<LEGAL>(const Position& pos, ExtMove* moveList) {
moveList = pos.checkers() ? generate<EVASIONS >(pos, moveList)
: generate<NON_EVASIONS>(pos, moveList);
while (cur != moveList)
if ( ((pinned && pinned & from_sq(*cur)) || from_sq(*cur) == ksq || type_of(*cur) == EN_PASSANT)
if ( ((pinned & from_sq(*cur)) || from_sq(*cur) == ksq || type_of(*cur) == EN_PASSANT)
&& !pos.legal(*cur))
*cur = (--moveList)->move;
else

2
DroidFishApp/src/main/cpp/stockfish/movegen.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

21
DroidFishApp/src/main/cpp/stockfish/movepick.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -69,7 +69,6 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const ButterflyHist
stage = (pos.checkers() ? EVASION_TT : MAIN_TT) +
!(ttm && pos.pseudo_legal(ttm));
threatenedPieces = 0;
}
/// MovePicker constructor for quiescence search
@ -93,20 +92,20 @@ MovePicker::MovePicker(const Position& p, Move ttm, Value th, const CapturePiece
{
assert(!pos.checkers());
stage = PROBCUT_TT + !(ttm && pos.capture(ttm)
stage = PROBCUT_TT + !(ttm && pos.capture_stage(ttm)
&& pos.pseudo_legal(ttm)
&& pos.see_ge(ttm, threshold));
}
/// MovePicker::score() assigns a numerical value to each move in a list, used
/// for sorting. Captures are ordered by Most Valuable Victim (MVV), preferring
/// captures with a good history. Quiets moves are ordered using the histories.
/// captures with a good history. Quiets moves are ordered using the history tables.
template<GenType Type>
void MovePicker::score() {
static_assert(Type == CAPTURES || Type == QUIETS || Type == EVASIONS, "Wrong type");
[[maybe_unused]] Bitboard threatenedByPawn, threatenedByMinor, threatenedByRook;
[[maybe_unused]] Bitboard threatenedByPawn, threatenedByMinor, threatenedByRook, threatenedPieces;
if constexpr (Type == QUIETS)
{
Color us = pos.side_to_move();
@ -123,8 +122,8 @@ void MovePicker::score() {
for (auto& m : *this)
if constexpr (Type == CAPTURES)
m.value = 6 * int(PieceValue[MG][pos.piece_on(to_sq(m))])
+ (*captureHistory)[pos.moved_piece(m)][to_sq(m)][type_of(pos.piece_on(to_sq(m)))];
m.value = (7 * int(PieceValue[MG][pos.piece_on(to_sq(m))])
+ (*captureHistory)[pos.moved_piece(m)][to_sq(m)][type_of(pos.piece_on(to_sq(m)))]) / 16;
else if constexpr (Type == QUIETS)
m.value = 2 * (*mainHistory)[pos.side_to_move()][from_to(m)]
@ -141,7 +140,7 @@ void MovePicker::score() {
+ bool(pos.check_squares(type_of(pos.moved_piece(m))) & to_sq(m)) * 16384;
else // Type == EVASIONS
{
if (pos.capture(m))
if (pos.capture_stage(m))
m.value = PieceValue[MG][pos.piece_on(to_sq(m))]
- Value(type_of(pos.moved_piece(m)))
+ (1 << 28);
@ -158,7 +157,7 @@ Move MovePicker::select(Pred filter) {
while (cur < endMoves)
{
if (T == Best)
if constexpr (T == Best)
std::swap(*cur, *std::max_element(cur, endMoves));
if (*cur != ttMove && filter())
@ -197,7 +196,7 @@ top:
case GOOD_CAPTURE:
if (select<Next>([&](){
return pos.see_ge(*cur, Value(-69 * cur->value / 1024)) ?
return pos.see_ge(*cur, Value(-cur->value)) ?
// Move losing capture to endBadCaptures to be tried later
true : (*endBadCaptures++ = *cur, false); }))
return *(cur - 1);
@ -216,7 +215,7 @@ top:
case REFUTATION:
if (select<Next>([&](){ return *cur != MOVE_NONE
&& !pos.capture(*cur)
&& !pos.capture_stage(*cur)
&& pos.pseudo_legal(*cur); }))
return *(cur - 1);
++stage;

18
DroidFishApp/src/main/cpp/stockfish/movepick.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -62,14 +62,14 @@ public:
template <typename T, int D, int Size, int... Sizes>
struct Stats : public std::array<Stats<T, D, Sizes...>, Size>
{
typedef Stats<T, D, Size, Sizes...> stats;
using stats = Stats<T, D, Size, Sizes...>;
void fill(const T& v) {
// For standard-layout 'this' points to first struct member
assert(std::is_standard_layout<stats>::value);
typedef StatsEntry<T, D> entry;
using entry = StatsEntry<T, D>;
entry* p = reinterpret_cast<entry*>(this);
std::fill(p, p + sizeof(*this) / sizeof(entry), v);
}
@ -87,23 +87,23 @@ enum StatsType { NoCaptures, Captures };
/// ordering decisions. It uses 2 tables (one for each color) indexed by
/// the move's from and to squares, see www.chessprogramming.org/Butterfly_Boards
/// (~11 elo)
typedef Stats<int16_t, 7183, COLOR_NB, int(SQUARE_NB) * int(SQUARE_NB)> ButterflyHistory;
using ButterflyHistory = Stats<int16_t, 7183, COLOR_NB, int(SQUARE_NB) * int(SQUARE_NB)>;
/// CounterMoveHistory stores counter moves indexed by [piece][to] of the previous
/// move, see www.chessprogramming.org/Countermove_Heuristic
typedef Stats<Move, NOT_USED, PIECE_NB, SQUARE_NB> CounterMoveHistory;
using CounterMoveHistory = Stats<Move, NOT_USED, PIECE_NB, SQUARE_NB>;
/// CapturePieceToHistory is addressed by a move's [piece][to][captured piece type]
typedef Stats<int16_t, 10692, PIECE_NB, SQUARE_NB, PIECE_TYPE_NB> CapturePieceToHistory;
using CapturePieceToHistory = Stats<int16_t, 10692, PIECE_NB, SQUARE_NB, PIECE_TYPE_NB>;
/// PieceToHistory is like ButterflyHistory but is addressed by a move's [piece][to]
typedef Stats<int16_t, 29952, PIECE_NB, SQUARE_NB> PieceToHistory;
using PieceToHistory = Stats<int16_t, 29952, PIECE_NB, SQUARE_NB>;
/// ContinuationHistory is the combined history of a given pair of moves, usually
/// the current one given a previous one. The nested history table is based on
/// PieceToHistory instead of ButterflyBoards.
/// (~63 elo)
typedef Stats<PieceToHistory, NOT_USED, PIECE_NB, SQUARE_NB> ContinuationHistory;
using ContinuationHistory = Stats<PieceToHistory, NOT_USED, PIECE_NB, SQUARE_NB>;
/// MovePicker class is used to pick one pseudo-legal move at a time from the
@ -131,8 +131,6 @@ public:
MovePicker(const Position&, Move, Value, const CapturePieceToHistory*);
Move next_move(bool skipQuiets = false);
Bitboard threatenedPieces;
private:
template<PickType T, typename Pred> Move select(Pred);
template<GenType> void score();

57
DroidFishApp/src/main/cpp/stockfish/nnue/evaluate_nnue.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -18,15 +18,15 @@
// Code for calculating NNUE evaluation function
#include <fstream>
#include <iomanip>
#include <iostream>
#include <set>
#include <sstream>
#include <iomanip>
#include <fstream>
#include <string_view>
#include "../evaluate.h"
#include "../position.h"
#include "../misc.h"
#include "../uci.h"
#include "../types.h"
@ -83,7 +83,7 @@ namespace Stockfish::Eval::NNUE {
} // namespace Detail
// Initialize the evaluation function parameters
void initialize() {
static void initialize() {
Detail::initialize(featureTransformer);
for (std::size_t i = 0; i < LayerStacks; ++i)
@ -91,7 +91,7 @@ namespace Stockfish::Eval::NNUE {
}
// Read network header
bool read_header(std::istream& stream, std::uint32_t* hashValue, std::string* desc)
static bool read_header(std::istream& stream, std::uint32_t* hashValue, std::string* desc)
{
std::uint32_t version, size;
@ -105,7 +105,7 @@ namespace Stockfish::Eval::NNUE {
}
// Write network header
bool write_header(std::ostream& stream, std::uint32_t hashValue, const std::string& desc)
static bool write_header(std::ostream& stream, std::uint32_t hashValue, const std::string& desc)
{
write_little_endian<std::uint32_t>(stream, Version);
write_little_endian<std::uint32_t>(stream, hashValue);
@ -115,7 +115,7 @@ namespace Stockfish::Eval::NNUE {
}
// Read network parameters
bool read_parameters(std::istream& stream) {
static bool read_parameters(std::istream& stream) {
std::uint32_t hashValue;
if (!read_header(stream, &hashValue, &netDescription)) return false;
@ -127,7 +127,7 @@ namespace Stockfish::Eval::NNUE {
}
// Write network parameters
bool write_parameters(std::ostream& stream) {
static bool write_parameters(std::ostream& stream) {
if (!write_header(stream, HashValue, netDescription)) return false;
if (!Detail::write_parameters(stream, *featureTransformer)) return false;
@ -136,6 +136,11 @@ namespace Stockfish::Eval::NNUE {
return (bool)stream;
}
void hint_common_parent_position(const Position& pos) {
if (Eval::useNNUE)
featureTransformer->hint_common_access(pos);
}
// Evaluation function. Perform differential calculation.
Value evaluate(const Position& pos, bool adjusted, int* complexity) {
@ -143,7 +148,7 @@ namespace Stockfish::Eval::NNUE {
// overaligning stack variables with alignas() doesn't work correctly.
constexpr uint64_t alignment = CacheLineSize;
int delta = 24 - pos.non_pawn_material() / 9560;
constexpr int delta = 24;
#if defined(ALIGNAS_ON_STACK_VARIABLES_BROKEN)
TransformedFeatureType transformedFeaturesUnaligned[
@ -211,7 +216,7 @@ namespace Stockfish::Eval::NNUE {
return t;
}
static const std::string PieceToChar(" PNBRQK pnbrqk");
constexpr std::string_view PieceToChar(" PNBRQK pnbrqk");
// format_cp_compact() converts a Value into (centi)pawns and writes it in a buffer.
@ -245,14 +250,15 @@ namespace Stockfish::Eval::NNUE {
}
// format_cp_aligned_dot() converts a Value into (centi)pawns and writes it in a buffer,
// always keeping two decimals. The buffer must have capacity for at least 7 chars.
static void format_cp_aligned_dot(Value v, char* buffer) {
// format_cp_aligned_dot() converts a Value into (centi)pawns, always keeping two decimals.
static void format_cp_aligned_dot(Value v, std::stringstream &stream) {
const double cp = 1.0 * std::abs(int(v)) / UCI::NormalizeToPawnValue;
buffer[0] = (v < 0 ? '-' : v > 0 ? '+' : ' ');
double cp = 1.0 * std::abs(int(v)) / UCI::NormalizeToPawnValue;
sprintf(&buffer[1], "%6.2f", cp);
stream << (v < 0 ? '-' : v > 0 ? '+' : ' ')
<< std::setiosflags(std::ios::fixed)
<< std::setw(6)
<< std::setprecision(2)
<< cp;
}
@ -332,17 +338,10 @@ namespace Stockfish::Eval::NNUE {
for (std::size_t bucket = 0; bucket < LayerStacks; ++bucket)
{
char buffer[3][8];
std::memset(buffer, '\0', sizeof(buffer));
format_cp_aligned_dot(t.psqt[bucket], buffer[0]);
format_cp_aligned_dot(t.positional[bucket], buffer[1]);
format_cp_aligned_dot(t.psqt[bucket] + t.positional[bucket], buffer[2]);
ss << "| " << bucket << " "
<< " | " << buffer[0] << " "
<< " | " << buffer[1] << " "
<< " | " << buffer[2] << " "
ss << "| " << bucket << " ";
ss << " | "; format_cp_aligned_dot(t.psqt[bucket], ss); ss << " "
<< " | "; format_cp_aligned_dot(t.positional[bucket], ss); ss << " "
<< " | "; format_cp_aligned_dot(t.psqt[bucket] + t.positional[bucket], ss); ss << " "
<< " |";
if (bucket == t.correctBucket)
ss << " <-- this bucket is used";

11
DroidFishApp/src/main/cpp/stockfish/nnue/evaluate_nnue.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -31,6 +31,7 @@ namespace Stockfish::Eval::NNUE {
constexpr std::uint32_t HashValue =
FeatureTransformer::get_hash_value() ^ Network::get_hash_value();
// Deleter for automating release of memory area
template <typename T>
struct AlignedDeleter {
@ -54,6 +55,14 @@ namespace Stockfish::Eval::NNUE {
template <typename T>
using LargePagePtr = std::unique_ptr<T, LargePageDeleter<T>>;
std::string trace(Position& pos);
Value evaluate(const Position& pos, bool adjusted = false, int* complexity = nullptr);
void hint_common_parent_position(const Position& pos);
bool load_eval(std::string name, std::istream& stream);
bool save_eval(std::ostream& stream);
bool save_eval(const std::optional<std::string>& filename);
} // namespace Stockfish::Eval::NNUE
#endif // #ifndef NNUE_EVALUATE_NNUE_H_INCLUDED

2
DroidFishApp/src/main/cpp/stockfish/nnue/features/half_ka_v2_hm.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

2
DroidFishApp/src/main/cpp/stockfish/nnue/features/half_ka_v2_hm.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

104
DroidFishApp/src/main/cpp/stockfish/nnue/layers/affine_transform.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -31,7 +31,7 @@
This file contains the definition for a fully connected layer (aka affine transform).
Two approaches are employed, depending on the sizes of the transform.
Approach 1:
Approach 1 (a specialization for large inputs):
- used when the PaddedInputDimensions >= 128
- uses AVX512 if possible
- processes inputs in batches of 2*InputSimdWidth
@ -42,9 +42,8 @@
depends on the architecture (the amount of registers)
- accumulate + hadd is used
Approach 2:
Approach 2 (a specialization for small inputs):
- used when the PaddedInputDimensions < 128
- does not use AVX512
- expected use-case is for when PaddedInputDimensions == 32 and InputDimensions <= 32.
- that's why AVX512 is hard to implement
- expected use-case is small layers
@ -72,6 +71,10 @@ namespace Stockfish::Eval::NNUE::Layers {
const __m64 Zeros = _mm_setzero_si64();
const auto inputVector = reinterpret_cast<const __m64*>(input);
# elif defined(USE_NEON_DOTPROD)
constexpr IndexType NumChunks = ceil_to_multiple<IndexType>(InputDimensions, 16) / 16;
const auto inputVector = reinterpret_cast<const int8x16_t*>(input);
# elif defined(USE_NEON)
constexpr IndexType NumChunks = ceil_to_multiple<IndexType>(InputDimensions, 16) / 16;
const auto inputVector = reinterpret_cast<const int8x8_t*>(input);
@ -123,6 +126,14 @@ namespace Stockfish::Eval::NNUE::Layers {
sum = _mm_add_pi32(sum, _mm_unpackhi_pi32(sum, sum));
output[i] = _mm_cvtsi64_si32(sum);
# elif defined(USE_NEON_DOTPROD)
int32x4_t sum = {biases[i]};
const auto row = reinterpret_cast<const int8x16_t*>(&weights[offset]);
for (IndexType j = 0; j < NumChunks; ++j) {
sum = vdotq_s32(sum, inputVector[j], row[j]);
}
output[i] = vaddvq_s32(sum);
# elif defined(USE_NEON)
int32x4_t sum = {biases[i]};
const auto row = reinterpret_cast<const int8x8_t*>(&weights[offset]);
@ -157,7 +168,7 @@ namespace Stockfish::Eval::NNUE::Layers {
constexpr IndexType LargeInputSize = std::numeric_limits<IndexType>::max();
#endif
// A specialization for large inputs.
// A specialization for large inputs
template <IndexType InDims, IndexType OutDims>
class AffineTransform<InDims, OutDims, std::enable_if_t<(ceil_to_multiple<IndexType>(InDims, MaxSimdWidth) >= LargeInputSize)>> {
public:
@ -176,36 +187,39 @@ namespace Stockfish::Eval::NNUE::Layers {
using OutputBuffer = OutputType[PaddedOutputDimensions];
static_assert(PaddedInputDimensions >= LargeInputSize, "Something went wrong. This specialization should not have been chosen.");
static_assert(PaddedInputDimensions >= LargeInputSize, "Something went wrong. This specialization (for large inputs) should not have been chosen.");
#if defined (USE_AVX512)
static constexpr const IndexType InputSimdWidth = 64;
static constexpr const IndexType MaxNumOutputRegs = 16;
static constexpr IndexType InputSimdWidth = 64;
static constexpr IndexType MaxNumOutputRegs = 16;
#elif defined (USE_AVX2)
static constexpr const IndexType InputSimdWidth = 32;
static constexpr const IndexType MaxNumOutputRegs = 8;
static constexpr IndexType InputSimdWidth = 32;
static constexpr IndexType MaxNumOutputRegs = 8;
#elif defined (USE_SSSE3)
static constexpr const IndexType InputSimdWidth = 16;
static constexpr const IndexType MaxNumOutputRegs = 8;
static constexpr IndexType InputSimdWidth = 16;
static constexpr IndexType MaxNumOutputRegs = 8;
#elif defined (USE_NEON_DOTPROD)
static constexpr IndexType InputSimdWidth = 16;
static constexpr IndexType MaxNumOutputRegs = 8;
#elif defined (USE_NEON)
static constexpr const IndexType InputSimdWidth = 8;
static constexpr const IndexType MaxNumOutputRegs = 8;
static constexpr IndexType InputSimdWidth = 8;
static constexpr IndexType MaxNumOutputRegs = 8;
#else
// The fallback implementation will not have permuted weights.
// We define these to avoid a lot of ifdefs later.
static constexpr const IndexType InputSimdWidth = 1;
static constexpr const IndexType MaxNumOutputRegs = 1;
static constexpr IndexType InputSimdWidth = 1;
static constexpr IndexType MaxNumOutputRegs = 1;
#endif
// A big block is a region in the weight matrix of the size [PaddedInputDimensions, NumOutputRegs].
// A small block is a region of size [InputSimdWidth, 1]
static constexpr const IndexType NumOutputRegs = std::min(MaxNumOutputRegs, OutputDimensions);
static constexpr const IndexType SmallBlockSize = InputSimdWidth;
static constexpr const IndexType BigBlockSize = NumOutputRegs * PaddedInputDimensions;
static constexpr const IndexType NumSmallBlocksInBigBlock = BigBlockSize / SmallBlockSize;
static constexpr const IndexType NumSmallBlocksPerOutput = PaddedInputDimensions / SmallBlockSize;
static constexpr const IndexType NumBigBlocks = OutputDimensions / NumOutputRegs;
static constexpr IndexType NumOutputRegs = std::min(MaxNumOutputRegs, OutputDimensions);
static constexpr IndexType SmallBlockSize = InputSimdWidth;
static constexpr IndexType BigBlockSize = NumOutputRegs * PaddedInputDimensions;
static constexpr IndexType NumSmallBlocksInBigBlock = BigBlockSize / SmallBlockSize;
static constexpr IndexType NumSmallBlocksPerOutput = PaddedInputDimensions / SmallBlockSize;
static constexpr IndexType NumBigBlocks = OutputDimensions / NumOutputRegs;
static_assert(OutputDimensions % NumOutputRegs == 0);
@ -241,8 +255,7 @@ namespace Stockfish::Eval::NNUE::Layers {
// Read network parameters
bool read_parameters(std::istream& stream) {
for (IndexType i = 0; i < OutputDimensions; ++i)
biases[i] = read_little_endian<BiasType>(stream);
read_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
weights[get_weight_index(i)] = read_little_endian<WeightType>(stream);
@ -252,8 +265,7 @@ namespace Stockfish::Eval::NNUE::Layers {
// Write network parameters
bool write_parameters(std::ostream& stream) const {
for (IndexType i = 0; i < OutputDimensions; ++i)
write_little_endian<BiasType>(stream, biases[i]);
write_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
write_little_endian<WeightType>(stream, weights[get_weight_index(i)]);
@ -292,6 +304,15 @@ namespace Stockfish::Eval::NNUE::Layers {
#define vec_add_dpbusd_32x2 Simd::m128_add_dpbusd_epi32x2
#define vec_hadd Simd::m128_hadd
#define vec_haddx4 Simd::m128_haddx4
#elif defined (USE_NEON_DOTPROD)
using acc_vec_t = int32x4_t;
using bias_vec_t = int32x4_t;
using weight_vec_t = int8x16_t;
using in_vec_t = int8x16_t;
#define vec_zero {0}
#define vec_add_dpbusd_32x2 Simd::dotprod_m128_add_dpbusd_epi32x2
#define vec_hadd Simd::neon_m128_hadd
#define vec_haddx4 Simd::neon_m128_haddx4
#elif defined (USE_NEON)
using acc_vec_t = int32x4_t;
using bias_vec_t = int32x4_t;
@ -374,6 +395,7 @@ namespace Stockfish::Eval::NNUE::Layers {
alignas(CacheLineSize) WeightType weights[OutputDimensions * PaddedInputDimensions];
};
// A specialization for small inputs
template <IndexType InDims, IndexType OutDims>
class AffineTransform<InDims, OutDims, std::enable_if_t<(ceil_to_multiple<IndexType>(InDims, MaxSimdWidth) < LargeInputSize)>> {
public:
@ -393,12 +415,7 @@ namespace Stockfish::Eval::NNUE::Layers {
using OutputBuffer = OutputType[PaddedOutputDimensions];
static_assert(PaddedInputDimensions < LargeInputSize, "Something went wrong. This specialization should not have been chosen.");
#if defined (USE_SSSE3)
static constexpr const IndexType OutputSimdWidth = SimdWidth / 4;
static constexpr const IndexType InputSimdWidth = SimdWidth;
#endif
static_assert(PaddedInputDimensions < LargeInputSize, "Something went wrong. This specialization (for small inputs) should not have been chosen.");
// Hash value embedded in the evaluation file
static constexpr std::uint32_t get_hash_value(std::uint32_t prevHash) {
@ -428,8 +445,7 @@ namespace Stockfish::Eval::NNUE::Layers {
// Read network parameters
bool read_parameters(std::istream& stream) {
for (IndexType i = 0; i < OutputDimensions; ++i)
biases[i] = read_little_endian<BiasType>(stream);
read_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
weights[get_weight_index(i)] = read_little_endian<WeightType>(stream);
@ -438,8 +454,7 @@ namespace Stockfish::Eval::NNUE::Layers {
// Write network parameters
bool write_parameters(std::ostream& stream) const {
for (IndexType i = 0; i < OutputDimensions; ++i)
write_little_endian<BiasType>(stream, biases[i]);
write_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
write_little_endian<WeightType>(stream, weights[get_weight_index(i)]);
@ -450,29 +465,34 @@ namespace Stockfish::Eval::NNUE::Layers {
const OutputType* propagate(
const InputType* input, OutputType* output) const {
#if defined (USE_AVX2)
#if defined (USE_AVX512)
using vec_t = __m512i;
#define vec_setzero _mm512_setzero_si512
#define vec_set_32 _mm512_set1_epi32
#define vec_add_dpbusd_32 Simd::m512_add_dpbusd_epi32
#define vec_add_dpbusd_32x2 Simd::m512_add_dpbusd_epi32x2
#define vec_hadd Simd::m512_hadd
#elif defined (USE_AVX2)
using vec_t = __m256i;
#define vec_setzero _mm256_setzero_si256
#define vec_set_32 _mm256_set1_epi32
#define vec_add_dpbusd_32 Simd::m256_add_dpbusd_epi32
#define vec_add_dpbusd_32x2 Simd::m256_add_dpbusd_epi32x2
#define vec_add_dpbusd_32x4 Simd::m256_add_dpbusd_epi32x4
#define vec_hadd Simd::m256_hadd
#define vec_haddx4 Simd::m256_haddx4
#elif defined (USE_SSSE3)
using vec_t = __m128i;
#define vec_setzero _mm_setzero_si128
#define vec_set_32 _mm_set1_epi32
#define vec_add_dpbusd_32 Simd::m128_add_dpbusd_epi32
#define vec_add_dpbusd_32x2 Simd::m128_add_dpbusd_epi32x2
#define vec_add_dpbusd_32x4 Simd::m128_add_dpbusd_epi32x4
#define vec_hadd Simd::m128_hadd
#define vec_haddx4 Simd::m128_haddx4
#endif
#if defined (USE_SSSE3)
const auto inputVector = reinterpret_cast<const vec_t*>(input);
static constexpr IndexType OutputSimdWidth = sizeof(vec_t) / sizeof(OutputType);
static_assert(OutputDimensions % OutputSimdWidth == 0 || OutputDimensions == 1);
if constexpr (OutputDimensions % OutputSimdWidth == 0)
@ -518,9 +538,7 @@ namespace Stockfish::Eval::NNUE::Layers {
# undef vec_set_32
# undef vec_add_dpbusd_32
# undef vec_add_dpbusd_32x2
# undef vec_add_dpbusd_32x4
# undef vec_hadd
# undef vec_haddx4
#else
// Use old implementation for the other architectures.
affine_transform_non_ssse3<

286
DroidFishApp/src/main/cpp/stockfish/nnue/layers/affine_transform_sparse_input.h Normal file
View File

@ -0,0 +1,286 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// Definition of layer AffineTransformSparseInput of NNUE evaluation function
#ifndef NNUE_LAYERS_AFFINE_TRANSFORM_SPARSE_INPUT_H_INCLUDED
#define NNUE_LAYERS_AFFINE_TRANSFORM_SPARSE_INPUT_H_INCLUDED
#include <iostream>
#include <algorithm>
#include <array>
#include <type_traits>
#include "../nnue_common.h"
#include "affine_transform.h"
#include "simd.h"
/*
This file contains the definition for a fully connected layer (aka affine transform) with block sparse input.
*/
namespace Stockfish::Eval::NNUE::Layers {
#if defined(__GNUC__) // GCC, Clang, ICC
static inline IndexType lsb_(std::uint32_t b) {
assert(b);
return IndexType(__builtin_ctzl(b));
}
#elif defined(_MSC_VER) // MSVC
static inline IndexType lsb_(std::uint32_t b) {
assert(b);
unsigned long idx;
_BitScanForward(&idx, b);
return (IndexType) idx;
}
#else // Compiler is neither GCC nor MSVC compatible
#error "Compiler not supported."
#endif
#if defined(USE_SSSE3)
alignas(CacheLineSize) static inline const std::array<std::array<std::uint16_t, 8>, 256> lookup_indices = [](){
std::array<std::array<std::uint16_t, 8>, 256> v{};
for (int i = 0; i < 256; ++i)
{
int j = i;
int k = 0;
while(j)
{
const IndexType lsbIndex = lsb_(std::uint32_t(j));
j &= j - 1;
v[i][k] = lsbIndex;
++k;
}
}
return v;
}();
alignas(CacheLineSize) static inline const std::array<unsigned, 256> lookup_count = [](){
std::array<unsigned, 256> v;
for (int i = 0; i < 256; ++i)
{
int j = i;
int k = 0;
while(j)
{
j &= j - 1;
++k;
}
v[i] = k;
}
return v;
}();
// Find indices of nonzero numbers in an int32_t array
template<const IndexType InputDimensions>
void find_nnz(const std::int32_t* input, std::uint16_t* out, IndexType& count_out) {
#if defined (USE_AVX512)
using vec_t = __m512i;
#define vec_nnz(a) _mm512_cmpgt_epi32_mask(a, _mm512_setzero_si512())
#elif defined (USE_AVX2)
using vec_t = __m256i;
#define vec_nnz(a) _mm256_movemask_ps(_mm256_castsi256_ps(_mm256_cmpgt_epi32(a, _mm256_setzero_si256())))
#elif defined (USE_SSSE3)
using vec_t = __m128i;
#define vec_nnz(a) _mm_movemask_ps(_mm_castsi128_ps(_mm_cmpgt_epi32(a, _mm_setzero_si128())))
#endif
constexpr IndexType InputSimdWidth = sizeof(vec_t) / sizeof(std::int32_t);
// Inputs are processed InputSimdWidth at a time and outputs are processed 8 at a time so we process in chunks of max(InputSimdWidth, 8)
constexpr IndexType ChunkSize = std::max<IndexType>(InputSimdWidth, 8);
constexpr IndexType NumChunks = InputDimensions / ChunkSize;
constexpr IndexType InputsPerChunk = ChunkSize / InputSimdWidth;
constexpr IndexType OutputsPerChunk = ChunkSize / 8;
const auto inputVector = reinterpret_cast<const vec_t*>(input);
IndexType count = 0;
__m128i base = _mm_set1_epi16(0);
__m128i increment = _mm_set1_epi16(8);
for (IndexType i = 0; i < NumChunks; ++i)
{
// bitmask of nonzero values in this chunk
unsigned nnz = 0;
for (IndexType j = 0; j < InputsPerChunk; ++j)
{
const vec_t inputChunk = inputVector[i * InputsPerChunk + j];
nnz |= (unsigned)vec_nnz(inputChunk) << (j * InputSimdWidth);
}
for (IndexType j = 0; j < OutputsPerChunk; ++j)
{
const auto lookup = (nnz >> (j * 8)) & 0xFF;
const auto offsets = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&lookup_indices[lookup]));
_mm_storeu_si128(reinterpret_cast<__m128i*>(out + count), _mm_add_epi16(base, offsets));
count += lookup_count[lookup];
base = _mm_add_epi16(base, increment);
}
}
count_out = count;
}
# undef vec_nnz
#endif
// Sparse input implementation
template <IndexType InDims, IndexType OutDims>
class AffineTransformSparseInput {
public:
// Input/output type
// Input/output type
using InputType = std::uint8_t;
using OutputType = std::int32_t;
// Number of input/output dimensions
static constexpr IndexType InputDimensions = InDims;
static constexpr IndexType OutputDimensions = OutDims;
static_assert(OutputDimensions % 16 == 0, "Only implemented for OutputDimensions divisible by 16.");
static constexpr IndexType PaddedInputDimensions =
ceil_to_multiple<IndexType>(InputDimensions, MaxSimdWidth);
static constexpr IndexType PaddedOutputDimensions =
ceil_to_multiple<IndexType>(OutputDimensions, MaxSimdWidth);
#if defined (USE_SSSE3)
static constexpr IndexType ChunkSize = 4;
#else
static constexpr IndexType ChunkSize = 1;
#endif
using OutputBuffer = OutputType[PaddedOutputDimensions];
// Hash value embedded in the evaluation file
static constexpr std::uint32_t get_hash_value(std::uint32_t prevHash) {
std::uint32_t hashValue = 0xCC03DAE4u;
hashValue += OutputDimensions;
hashValue ^= prevHash >> 1;
hashValue ^= prevHash << 31;
return hashValue;
}
static IndexType get_weight_index_scrambled(IndexType i)
{
return
(i / ChunkSize) % (PaddedInputDimensions / ChunkSize) * OutputDimensions * ChunkSize +
i / PaddedInputDimensions * ChunkSize +
i % ChunkSize;
}
static IndexType get_weight_index(IndexType i)
{
#if defined (USE_SSSE3)
return get_weight_index_scrambled(i);
#else
return i;
#endif
}
// Read network parameters
bool read_parameters(std::istream& stream) {
read_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
weights[get_weight_index(i)] = read_little_endian<WeightType>(stream);
return !stream.fail();
}
// Write network parameters
bool write_parameters(std::ostream& stream) const {
write_little_endian<BiasType>(stream, biases, OutputDimensions);
for (IndexType i = 0; i < OutputDimensions * PaddedInputDimensions; ++i)
write_little_endian<WeightType>(stream, weights[get_weight_index(i)]);
return !stream.fail();
}
// Forward propagation
const OutputType* propagate(
const InputType* input, OutputType* output) const {
#if defined (USE_SSSE3)
#if defined (USE_AVX512)
using vec_t = __m512i;
#define vec_setzero _mm512_setzero_si512
#define vec_set_32 _mm512_set1_epi32
#define vec_add_dpbusd_32 Simd::m512_add_dpbusd_epi32
#elif defined (USE_AVX2)
using vec_t = __m256i;
#define vec_setzero _mm256_setzero_si256
#define vec_set_32 _mm256_set1_epi32
#define vec_add_dpbusd_32 Simd::m256_add_dpbusd_epi32
#elif defined (USE_SSSE3)
using vec_t = __m128i;
#define vec_setzero _mm_setzero_si128
#define vec_set_32 _mm_set1_epi32
#define vec_add_dpbusd_32 Simd::m128_add_dpbusd_epi32
#endif
static constexpr IndexType OutputSimdWidth = sizeof(vec_t) / sizeof(OutputType);
constexpr IndexType NumChunks = ceil_to_multiple<IndexType>(InputDimensions, 8) / ChunkSize;
constexpr IndexType NumRegs = OutputDimensions / OutputSimdWidth;
std::uint16_t nnz[NumChunks];
IndexType count;
const auto input32 = reinterpret_cast<const std::int32_t*>(input);
// Find indices of nonzero 32bit blocks
find_nnz<NumChunks>(input32, nnz, count);
const vec_t* biasvec = reinterpret_cast<const vec_t*>(biases);
vec_t acc[NumRegs];
for (IndexType k = 0; k < NumRegs; ++k)
acc[k] = biasvec[k];
for (IndexType j = 0; j < count; ++j)
{
const auto i = nnz[j];
const vec_t in = vec_set_32(input32[i]);
const auto col = reinterpret_cast<const vec_t*>(&weights[i * OutputDimensions * ChunkSize]);
for (IndexType k = 0; k < NumRegs; ++k)
vec_add_dpbusd_32(acc[k], in, col[k]);
}
vec_t* outptr = reinterpret_cast<vec_t*>(output);
for (IndexType k = 0; k < NumRegs; ++k)
outptr[k] = acc[k];
# undef vec_setzero
# undef vec_set_32
# undef vec_add_dpbusd_32
#else
// Use dense implementation for the other architectures.
affine_transform_non_ssse3<
InputDimensions,
PaddedInputDimensions,
OutputDimensions>(output, weights, biases, input);
#endif
return output;
}
private:
using BiasType = OutputType;
using WeightType = std::int8_t;
alignas(CacheLineSize) BiasType biases[OutputDimensions];
alignas(CacheLineSize) WeightType weights[OutputDimensions * PaddedInputDimensions];
};
} // namespace Stockfish::Eval::NNUE::Layers
#endif // #ifndef NNUE_LAYERS_AFFINE_TRANSFORM_SPARSE_INPUT_H_INCLUDED

2
DroidFishApp/src/main/cpp/stockfish/nnue/layers/clipped_relu.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

52
DroidFishApp/src/main/cpp/stockfish/nnue/layers/simd.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -153,7 +153,7 @@ namespace Stockfish::Simd {
asm(
"vpdpbusd %[b0], %[a0], %[acc]\n\t"
"vpdpbusd %[b1], %[a1], %[acc]\n\t"
: [acc]"+v"(acc)
: [acc]"+&v"(acc)
: [a0]"v"(a0), [b0]"vm"(b0), [a1]"v"(a1), [b1]"vm"(b1)
);
# else
@ -165,18 +165,19 @@ namespace Stockfish::Simd {
__m512i tmp0 = _mm512_maddubs_epi16(a0, b0);
__m512i tmp1 = _mm512_maddubs_epi16(a1, b1);
asm(
"vpaddsw %[tmp0], %[tmp1], %[tmp0]\n\t"
"vpmaddwd %[tmp0], %[ones], %[tmp0]\n\t"
"vpmaddwd %[tmp1], %[ones], %[tmp1]\n\t"
"vpaddd %[tmp0], %[tmp1], %[tmp0]\n\t"
"vpaddd %[acc], %[tmp0], %[acc]\n\t"
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
: [tmp1]"v"(tmp1), [ones]"v"(_mm512_set1_epi16(1))
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0), [tmp1]"+&v"(tmp1)
: [ones]"v"(_mm512_set1_epi16(1))
);
# else
__m512i product0 = _mm512_maddubs_epi16(a0, b0);
__m512i product1 = _mm512_maddubs_epi16(a1, b1);
product0 = _mm512_adds_epi16(product0, product1);
product0 = _mm512_madd_epi16(product0, _mm512_set1_epi16(1));
acc = _mm512_add_epi32(acc, product0);
product1 = _mm512_madd_epi16(product1, _mm512_set1_epi16(1));
acc = _mm512_add_epi32(acc, _mm512_add_epi32(product0, product1));
# endif
# endif
}
@ -249,7 +250,7 @@ namespace Stockfish::Simd {
asm(
VNNI_PREFIX "vpdpbusd %[b0], %[a0], %[acc]\n\t"
VNNI_PREFIX "vpdpbusd %[b1], %[a1], %[acc]\n\t"
: [acc]"+v"(acc)
: [acc]"+&v"(acc)
: [a0]"v"(a0), [b0]"vm"(b0), [a1]"v"(a1), [b1]"vm"(b1)
);
# else
@ -261,18 +262,19 @@ namespace Stockfish::Simd {
__m256i tmp0 = _mm256_maddubs_epi16(a0, b0);
__m256i tmp1 = _mm256_maddubs_epi16(a1, b1);
asm(
"vpaddsw %[tmp0], %[tmp1], %[tmp0]\n\t"
"vpmaddwd %[tmp0], %[ones], %[tmp0]\n\t"
"vpmaddwd %[tmp1], %[ones], %[tmp1]\n\t"
"vpaddd %[tmp0], %[tmp1], %[tmp0]\n\t"
"vpaddd %[acc], %[tmp0], %[acc]\n\t"
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
: [tmp1]"v"(tmp1), [ones]"v"(_mm256_set1_epi16(1))
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0), [tmp1]"+&v"(tmp1)
: [ones]"v"(_mm256_set1_epi16(1))
);
# else
__m256i product0 = _mm256_maddubs_epi16(a0, b0);
__m256i product1 = _mm256_maddubs_epi16(a1, b1);
product0 = _mm256_adds_epi16(product0, product1);
product0 = _mm256_madd_epi16(product0, _mm256_set1_epi16(1));
acc = _mm256_add_epi32(acc, product0);
product1 = _mm256_madd_epi16(product1, _mm256_set1_epi16(1));
acc = _mm256_add_epi32(acc, _mm256_add_epi32(product0, product1));
# endif
# endif
}
@ -326,23 +328,37 @@ namespace Stockfish::Simd {
__m128i tmp0 = _mm_maddubs_epi16(a0, b0);
__m128i tmp1 = _mm_maddubs_epi16(a1, b1);
asm(
"paddsw %[tmp1], %[tmp0]\n\t"
"pmaddwd %[ones], %[tmp0]\n\t"
"pmaddwd %[ones], %[tmp1]\n\t"
"paddd %[tmp1], %[tmp0]\n\t"
"paddd %[tmp0], %[acc]\n\t"
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0)
: [tmp1]"v"(tmp1), [ones]"v"(_mm_set1_epi16(1))
: [acc]"+v"(acc), [tmp0]"+&v"(tmp0), [tmp1]"+&v"(tmp1)
: [ones]"v"(_mm_set1_epi16(1))
);
# else
__m128i product0 = _mm_maddubs_epi16(a0, b0);
__m128i product1 = _mm_maddubs_epi16(a1, b1);
product0 = _mm_adds_epi16(product0, product1);
product0 = _mm_madd_epi16(product0, _mm_set1_epi16(1));
acc = _mm_add_epi32(acc, product0);
product1 = _mm_madd_epi16(product1, _mm_set1_epi16(1));
acc = _mm_add_epi32(acc, _mm_add_epi32(product0, product1));
# endif
}
#endif
#if defined (USE_NEON_DOTPROD)
[[maybe_unused]] static void dotprod_m128_add_dpbusd_epi32x2(
int32x4_t& acc,
int8x16_t a0, int8x16_t b0,
int8x16_t a1, int8x16_t b1) {
acc = vdotq_s32(acc, a0, b0);
acc = vdotq_s32(acc, a1, b1);
}
#endif
#if defined (USE_NEON)
[[maybe_unused]] static int neon_m128_reduce_add_epi32(int32x4_t s) {

4
DroidFishApp/src/main/cpp/stockfish/nnue/layers/sqr_clipped_relu.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -106,7 +106,7 @@ namespace Stockfish::Eval::NNUE::Layers {
for (IndexType i = Start; i < InputDimensions; ++i) {
output[i] = static_cast<OutputType>(
// realy should be /127 but we need to make it fast
// really should be /127 but we need to make it fast
// needs to be accounted for in the trainer
std::max(0ll, std::min(127ll, (((long long)input[i] * input[i]) >> (2 * WeightScaleBits)) / 128)));
}

2
DroidFishApp/src/main/cpp/stockfish/nnue/nnue_accumulator.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

31
DroidFishApp/src/main/cpp/stockfish/nnue/nnue_architecture.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -27,6 +27,7 @@
#include "features/half_ka_v2_hm.h"
#include "layers/affine_transform_sparse_input.h"
#include "layers/affine_transform.h"
#include "layers/clipped_relu.h"
#include "layers/sqr_clipped_relu.h"
@ -39,7 +40,7 @@ namespace Stockfish::Eval::NNUE {
using FeatureSet = Features::HalfKAv2_hm;
// Number of input feature dimensions after conversion
constexpr IndexType TransformedFeatureDimensions = 1024;
constexpr IndexType TransformedFeatureDimensions = 1536;
constexpr IndexType PSQTBuckets = 8;
constexpr IndexType LayerStacks = 8;
@ -48,7 +49,7 @@ struct Network
static constexpr int FC_0_OUTPUTS = 15;
static constexpr int FC_1_OUTPUTS = 32;
Layers::AffineTransform<TransformedFeatureDimensions, FC_0_OUTPUTS + 1> fc_0;
Layers::AffineTransformSparseInput<TransformedFeatureDimensions, FC_0_OUTPUTS + 1> fc_0;
Layers::SqrClippedReLU<FC_0_OUTPUTS + 1> ac_sqr_0;
Layers::ClippedReLU<FC_0_OUTPUTS + 1> ac_0;
Layers::AffineTransform<FC_0_OUTPUTS * 2, FC_1_OUTPUTS> fc_1;
@ -72,22 +73,20 @@ struct Network
// Read network parameters
bool read_parameters(std::istream& stream) {
if (!fc_0.read_parameters(stream)) return false;
if (!ac_0.read_parameters(stream)) return false;
if (!fc_1.read_parameters(stream)) return false;
if (!ac_1.read_parameters(stream)) return false;
if (!fc_2.read_parameters(stream)) return false;
return true;
return fc_0.read_parameters(stream)
&& ac_0.read_parameters(stream)
&& fc_1.read_parameters(stream)
&& ac_1.read_parameters(stream)
&& fc_2.read_parameters(stream);
}
// Read network parameters
// Write network parameters
bool write_parameters(std::ostream& stream) const {
if (!fc_0.write_parameters(stream)) return false;
if (!ac_0.write_parameters(stream)) return false;
if (!fc_1.write_parameters(stream)) return false;
if (!ac_1.write_parameters(stream)) return false;
if (!fc_2.write_parameters(stream)) return false;
return true;
return fc_0.write_parameters(stream)
&& ac_0.write_parameters(stream)
&& fc_1.write_parameters(stream)
&& ac_1.write_parameters(stream)
&& fc_2.write_parameters(stream);
}
std::int32_t propagate(const TransformedFeatureType* transformedFeatures)

79
DroidFishApp/src/main/cpp/stockfish/nnue/nnue_common.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -57,6 +57,9 @@ namespace Stockfish::Eval::NNUE {
// Size of cache line (in bytes)
constexpr std::size_t CacheLineSize = 64;
constexpr const char Leb128MagicString[] = "COMPRESSED_LEB128";
constexpr const std::size_t Leb128MagicStringSize = sizeof(Leb128MagicString) - 1;
// SIMD width (in bytes)
#if defined(USE_AVX2)
constexpr std::size_t SimdWidth = 32;
@ -159,6 +162,80 @@ namespace Stockfish::Eval::NNUE {
write_little_endian<IntType>(stream, values[i]);
}
template <typename IntType>
inline void read_leb_128(std::istream& stream, IntType* out, std::size_t count) {
static_assert(std::is_signed_v<IntType>, "Not implemented for unsigned types");
char leb128MagicString[Leb128MagicStringSize];
stream.read(leb128MagicString, Leb128MagicStringSize);
assert(strncmp(Leb128MagicString, leb128MagicString, Leb128MagicStringSize) == 0);
const std::uint32_t BUF_SIZE = 4096;
std::uint8_t buf[BUF_SIZE];
auto bytes_left = read_little_endian<std::uint32_t>(stream);
std::uint32_t buf_pos = BUF_SIZE;
for (std::size_t i = 0; i < count; ++i) {
IntType result = 0;
size_t shift = 0;
do {
if (buf_pos == BUF_SIZE) {
stream.read(reinterpret_cast<char*>(buf), std::min(bytes_left, BUF_SIZE));
buf_pos = 0;
}
std::uint8_t byte = buf[buf_pos++];
--bytes_left;
result |= (byte & 0x7f) << shift;
shift += 7;
if ((byte & 0x80) == 0) {
out[i] = sizeof(IntType) * 8 <= shift || (byte & 0x40) == 0 ? result : result | ~((1 << shift) - 1);
break;
}
} while (shift < sizeof(IntType) * 8);
}
assert(bytes_left == 0);
}
template <typename IntType>
inline void write_leb_128(std::ostream& stream, const IntType* values, std::size_t count) {
static_assert(std::is_signed_v<IntType>, "Not implemented for unsigned types");
stream.write(Leb128MagicString, Leb128MagicStringSize);
std::uint32_t byte_count = 0;
for (std::size_t i = 0; i < count; ++i) {
IntType value = values[i];
std::uint8_t byte;
do {
byte = value & 0x7f;
value >>= 7;
++byte_count;
} while ((byte & 0x40) == 0 ? value != 0 : value != -1);
}
write_little_endian(stream, byte_count);
const std::uint32_t BUF_SIZE = 4096;
std::uint8_t buf[BUF_SIZE];
std::uint32_t buf_pos = 0;
auto flush = [&]() {
if (buf_pos > 0) {
stream.write(reinterpret_cast<char*>(buf), buf_pos);
buf_pos = 0;
}
};
auto write = [&](std::uint8_t byte) {
buf[buf_pos++] = byte;
if (buf_pos == BUF_SIZE) flush();
};
for (std::size_t i = 0; i < count; ++i) {
IntType value = values[i];
while (true) {
std::uint8_t byte = value & 0x7f;
value >>= 7;
if ((byte & 0x40) == 0 ? value == 0 : value == -1) {
write(byte);
break;
}
write(byte | 0x80);
}
}
flush();
}
} // namespace Stockfish::Eval::NNUE
#endif // #ifndef NNUE_COMMON_H_INCLUDED

189
DroidFishApp/src/main/cpp/stockfish/nnue/nnue_feature_transformer.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -25,6 +25,7 @@
#include "nnue_architecture.h"
#include <cstring> // std::memset()
#include <utility> // std::pair
namespace Stockfish::Eval::NNUE {
@ -41,8 +42,8 @@ namespace Stockfish::Eval::NNUE {
"Per feature PSQT values cannot be processed at granularity lower than 8 at a time.");
#ifdef USE_AVX512
typedef __m512i vec_t;
typedef __m256i psqt_vec_t;
using vec_t = __m512i;
using psqt_vec_t = __m256i;
#define vec_load(a) _mm512_load_si512(a)
#define vec_store(a,b) _mm512_store_si512(a,b)
#define vec_add_16(a,b) _mm512_add_epi16(a,b)
@ -65,8 +66,8 @@ namespace Stockfish::Eval::NNUE {
#define MaxChunkSize 64
#elif USE_AVX2
typedef __m256i vec_t;
typedef __m256i psqt_vec_t;
using vec_t = __m256i;
using psqt_vec_t = __m256i;
#define vec_load(a) _mm256_load_si256(a)
#define vec_store(a,b) _mm256_store_si256(a,b)
#define vec_add_16(a,b) _mm256_add_epi16(a,b)
@ -89,8 +90,8 @@ namespace Stockfish::Eval::NNUE {
#define MaxChunkSize 32
#elif USE_SSE2
typedef __m128i vec_t;
typedef __m128i psqt_vec_t;
using vec_t = __m128i;
using psqt_vec_t = __m128i;
#define vec_load(a) (*(a))
#define vec_store(a,b) *(a)=(b)
#define vec_add_16(a,b) _mm_add_epi16(a,b)
@ -110,8 +111,8 @@ namespace Stockfish::Eval::NNUE {
#define MaxChunkSize 16
#elif USE_MMX
typedef __m64 vec_t;
typedef __m64 psqt_vec_t;
using vec_t = __m64;
using psqt_vec_t = __m64;
#define vec_load(a) (*(a))
#define vec_store(a,b) *(a)=(b)
#define vec_add_16(a,b) _mm_add_pi16(a,b)
@ -138,8 +139,8 @@ namespace Stockfish::Eval::NNUE {
#define MaxChunkSize 8
#elif USE_NEON
typedef int16x8_t vec_t;
typedef int32x4_t psqt_vec_t;
using vec_t = int16x8_t;
using psqt_vec_t = int32x4_t;
#define vec_load(a) (*(a))
#define vec_store(a,b) *(a)=(b)
#define vec_add_16(a,b) vaddq_s16(a,b)
@ -252,9 +253,9 @@ namespace Stockfish::Eval::NNUE {
// Read network parameters
bool read_parameters(std::istream& stream) {
read_little_endian<BiasType >(stream, biases , HalfDimensions );
read_little_endian<WeightType >(stream, weights , HalfDimensions * InputDimensions);
read_little_endian<PSQTWeightType>(stream, psqtWeights, PSQTBuckets * InputDimensions);
read_leb_128<BiasType >(stream, biases , HalfDimensions );
read_leb_128<WeightType >(stream, weights , HalfDimensions * InputDimensions);
read_leb_128<PSQTWeightType>(stream, psqtWeights, PSQTBuckets * InputDimensions);
return !stream.fail();
}
@ -262,9 +263,9 @@ namespace Stockfish::Eval::NNUE {
// Write network parameters
bool write_parameters(std::ostream& stream) const {
write_little_endian<BiasType >(stream, biases , HalfDimensions );
write_little_endian<WeightType >(stream, weights , HalfDimensions * InputDimensions);
write_little_endian<PSQTWeightType>(stream, psqtWeights, PSQTBuckets * InputDimensions);
write_leb_128<BiasType >(stream, biases , HalfDimensions );
write_leb_128<WeightType >(stream, weights , HalfDimensions * InputDimensions);
write_leb_128<PSQTWeightType>(stream, psqtWeights, PSQTBuckets * InputDimensions);
return !stream.fail();
}
@ -332,27 +333,16 @@ namespace Stockfish::Eval::NNUE {
#endif
return psqt;
} // end of function transform()
void hint_common_access(const Position& pos) const {
hint_common_access_for_perspective<WHITE>(pos);
hint_common_access_for_perspective<BLACK>(pos);
}
private:
template<Color Perspective>
void update_accumulator(const Position& pos) const {
// The size must be enough to contain the largest possible update.
// That might depend on the feature set and generally relies on the
// feature set's update cost calculation to be correct and never
// allow updates with more added/removed features than MaxActiveDimensions.
#ifdef VECTOR
// Gcc-10.2 unnecessarily spills AVX2 registers if this array
// is defined in the VECTOR code below, once in each branch
vec_t acc[NumRegs];
psqt_vec_t psqt[NumPsqtRegs];
#endif
[[nodiscard]] std::pair<StateInfo*, StateInfo*> try_find_computed_accumulator(const Position& pos) const {
// Look for a usable accumulator of an earlier position. We keep track
// of the estimated gain in terms of features to be added/subtracted.
StateInfo *st = pos.state(), *next = nullptr;
@ -367,31 +357,61 @@ namespace Stockfish::Eval::NNUE {
next = st;
st = st->previous;
}
return { st, next };
}
if (st->accumulator.computed[Perspective])
{
if (next == nullptr)
// NOTE: The parameter states_to_update is an array of position states, ending with nullptr.
// All states must be sequential, that is states_to_update[i] must either be reachable
// by repeatedly applying ->previous from states_to_update[i+1] or states_to_update[i] == nullptr.
// computed_st must be reachable by repeatedly applying ->previous on states_to_update[0], if not nullptr.
template<Color Perspective, size_t N>
void update_accumulator_incremental(const Position& pos, StateInfo* computed_st, StateInfo* states_to_update[N]) const {
static_assert(N > 0);
assert(states_to_update[N-1] == nullptr);
#ifdef VECTOR
// Gcc-10.2 unnecessarily spills AVX2 registers if this array
// is defined in the VECTOR code below, once in each branch
vec_t acc[NumRegs];
psqt_vec_t psqt[NumPsqtRegs];
#endif
if (states_to_update[0] == nullptr)
return;
// Update incrementally in two steps. First, we update the "next"
// accumulator. Then, we update the current accumulator (pos.state()).
// Update incrementally going back through states_to_update.
// Gather all features to be updated.
const Square ksq = pos.square<KING>(Perspective);
FeatureSet::IndexList removed[2], added[2];
FeatureSet::append_changed_indices<Perspective>(
ksq, next->dirtyPiece, removed[0], added[0]);
for (StateInfo *st2 = pos.state(); st2 != next; st2 = st2->previous)
FeatureSet::append_changed_indices<Perspective>(
ksq, st2->dirtyPiece, removed[1], added[1]);
// Mark the accumulators as computed.
next->accumulator.computed[Perspective] = true;
pos.state()->accumulator.computed[Perspective] = true;
// The size must be enough to contain the largest possible update.
// That might depend on the feature set and generally relies on the
// feature set's update cost calculation to be correct and never
// allow updates with more added/removed features than MaxActiveDimensions.
FeatureSet::IndexList removed[N-1], added[N-1];
{
int i = N-2; // last potential state to update. Skip last element because it must be nullptr.
while (states_to_update[i] == nullptr)
--i;
StateInfo *st2 = states_to_update[i];
for (; i >= 0; --i)
{
states_to_update[i]->accumulator.computed[Perspective] = true;
StateInfo* end_state = i == 0 ? computed_st : states_to_update[i - 1];
for (; st2 != end_state; st2 = st2->previous)
FeatureSet::append_changed_indices<Perspective>(
ksq, st2->dirtyPiece, removed[i], added[i]);
}
}
StateInfo* st = computed_st;
// Now update the accumulators listed in states_to_update[], where the last element is a sentinel.
StateInfo *states_to_update[3] =
{ next, next == pos.state() ? nullptr : pos.state(), nullptr };
#ifdef VECTOR
for (IndexType j = 0; j < HalfDimensions / TileHeight; ++j)
{
@ -502,10 +522,24 @@ namespace Stockfish::Eval::NNUE {
}
}
#endif
#if defined(USE_MMX)
_mm_empty();
#endif
}
else
{
template<Color Perspective>
void update_accumulator_refresh(const Position& pos) const {
#ifdef VECTOR
// Gcc-10.2 unnecessarily spills AVX2 registers if this array
// is defined in the VECTOR code below, once in each branch
vec_t acc[NumRegs];
psqt_vec_t psqt[NumPsqtRegs];
#endif
// Refresh the accumulator
// Could be extracted to a separate function because it's done in 2 places,
// but it's unclear if compilers would correctly handle register allocation.
auto& accumulator = pos.state()->accumulator;
accumulator.computed[Perspective] = true;
FeatureSet::IndexList active;
@ -572,13 +606,64 @@ namespace Stockfish::Eval::NNUE {
accumulator.psqtAccumulation[Perspective][k] += psqtWeights[index * PSQTBuckets + k];
}
#endif
}
#if defined(USE_MMX)
_mm_empty();
#endif
}
template<Color Perspective>
void hint_common_access_for_perspective(const Position& pos) const {
// Works like update_accumulator, but performs less work.
// Updates ONLY the accumulator for pos.
// Look for a usable accumulator of an earlier position. We keep track
// of the estimated gain in terms of features to be added/subtracted.
// Fast early exit.
if (pos.state()->accumulator.computed[Perspective])
return;
auto [oldest_st, _] = try_find_computed_accumulator<Perspective>(pos);
if (oldest_st->accumulator.computed[Perspective])
{
// Only update current position accumulator to minimize work.
StateInfo* states_to_update[2] = { pos.state(), nullptr };
update_accumulator_incremental<Perspective, 2>(pos, oldest_st, states_to_update);
}
else
{
update_accumulator_refresh<Perspective>(pos);
}
}
template<Color Perspective>
void update_accumulator(const Position& pos) const {
auto [oldest_st, next] = try_find_computed_accumulator<Perspective>(pos);
if (oldest_st->accumulator.computed[Perspective])
{
if (next == nullptr)
return;
// Now update the accumulators listed in states_to_update[], where the last element is a sentinel.
// Currently we update 2 accumulators.
// 1. for the current position
// 2. the next accumulator after the computed one
// The heuristic may change in the future.
StateInfo *states_to_update[3] =
{ next, next == pos.state() ? nullptr : pos.state(), nullptr };
update_accumulator_incremental<Perspective, 3>(pos, oldest_st, states_to_update);
}
else
{
update_accumulator_refresh<Perspective>(pos);
}
}
alignas(CacheLineSize) BiasType biases[HalfDimensions];
alignas(CacheLineSize) WeightType weights[HalfDimensions * InputDimensions];
alignas(CacheLineSize) PSQTWeightType psqtWeights[InputDimensions * PSQTBuckets];

2
DroidFishApp/src/main/cpp/stockfish/pawns.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

4
DroidFishApp/src/main/cpp/stockfish/pawns.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -61,7 +61,7 @@ struct Entry {
int blockedCount;
};
typedef HashTable<Entry, 131072> Table;
using Table = HashTable<Entry, 131072>;
Entry* probe(const Position& pos);

94
DroidFishApp/src/main/cpp/stockfish/position.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -22,6 +22,7 @@
#include <cstring> // For std::memset, std::memcmp
#include <iomanip>
#include <sstream>
#include <string_view>
#include "bitboard.h"
#include "misc.h"
@ -46,7 +47,7 @@ namespace Zobrist {
namespace {
const string PieceToChar(" PNBRQK pnbrqk");
constexpr std::string_view PieceToChar(" PNBRQK pnbrqk");
constexpr Piece Pieces[] = { W_PAWN, W_KNIGHT, W_BISHOP, W_ROOK, W_QUEEN, W_KING,
B_PAWN, B_KNIGHT, B_BISHOP, B_ROOK, B_QUEEN, B_KING };
@ -96,7 +97,7 @@ std::ostream& operator<<(std::ostream& os, const Position& pos) {
// Marcel van Kervinck's cuckoo algorithm for fast detection of "upcoming repetition"
// situations. Description of the algorithm in the following paper:
// https://marcelk.net/2013-04-06/paper/upcoming-rep-v2.pdf
// http://web.archive.org/web/20201107002606/https://marcelk.net/2013-04-06/paper/upcoming-rep-v2.pdf
// First and second hash functions for indexing the cuckoo tables
inline int H1(Key h) { return h & 0x1fff; }
@ -281,7 +282,7 @@ Position& Position::set(const string& fenStr, bool isChess960, StateInfo* si, Th
chess960 = isChess960;
thisThread = th;
set_state(st);
set_state();
assert(pos_is_ok());
@ -312,60 +313,59 @@ void Position::set_castling_right(Color c, Square rfrom) {
/// Position::set_check_info() sets king attacks to detect if a move gives check
void Position::set_check_info(StateInfo* si) const {
void Position::set_check_info() const {
si->blockersForKing[WHITE] = slider_blockers(pieces(BLACK), square<KING>(WHITE), si->pinners[BLACK]);
si->blockersForKing[BLACK] = slider_blockers(pieces(WHITE), square<KING>(BLACK), si->pinners[WHITE]);
st->blockersForKing[WHITE] = slider_blockers(pieces(BLACK), square<KING>(WHITE), st->pinners[BLACK]);
st->blockersForKing[BLACK] = slider_blockers(pieces(WHITE), square<KING>(BLACK), st->pinners[WHITE]);
Square ksq = square<KING>(~sideToMove);
si->checkSquares[PAWN] = pawn_attacks_bb(~sideToMove, ksq);
si->checkSquares[KNIGHT] = attacks_bb<KNIGHT>(ksq);
si->checkSquares[BISHOP] = attacks_bb<BISHOP>(ksq, pieces());
si->checkSquares[ROOK] = attacks_bb<ROOK>(ksq, pieces());
si->checkSquares[QUEEN] = si->checkSquares[BISHOP] | si->checkSquares[ROOK];
si->checkSquares[KING] = 0;
st->checkSquares[PAWN] = pawn_attacks_bb(~sideToMove, ksq);
st->checkSquares[KNIGHT] = attacks_bb<KNIGHT>(ksq);
st->checkSquares[BISHOP] = attacks_bb<BISHOP>(ksq, pieces());
st->checkSquares[ROOK] = attacks_bb<ROOK>(ksq, pieces());
st->checkSquares[QUEEN] = st->checkSquares[BISHOP] | st->checkSquares[ROOK];
st->checkSquares[KING] = 0;
}
/// Position::set_state() computes the hash keys of the position, and other
/// data that once computed is updated incrementally as moves are made.
/// The function is only used when a new position is set up, and to verify
/// the correctness of the StateInfo data when running in debug mode.
/// The function is only used when a new position is set up
void Position::set_state(StateInfo* si) const {
void Position::set_state() const {
si->key = si->materialKey = 0;
si->pawnKey = Zobrist::noPawns;
si->nonPawnMaterial[WHITE] = si->nonPawnMaterial[BLACK] = VALUE_ZERO;
si->checkersBB = attackers_to(square<KING>(sideToMove)) & pieces(~sideToMove);
st->key = st->materialKey = 0;
st->pawnKey = Zobrist::noPawns;
st->nonPawnMaterial[WHITE] = st->nonPawnMaterial[BLACK] = VALUE_ZERO;
st->checkersBB = attackers_to(square<KING>(sideToMove)) & pieces(~sideToMove);
set_check_info(si);
set_check_info();
for (Bitboard b = pieces(); b; )
{
Square s = pop_lsb(b);
Piece pc = piece_on(s);
si->key ^= Zobrist::psq[pc][s];
st->key ^= Zobrist::psq[pc][s];
if (type_of(pc) == PAWN)
si->pawnKey ^= Zobrist::psq[pc][s];
st->pawnKey ^= Zobrist::psq[pc][s];
else if (type_of(pc) != KING)
si->nonPawnMaterial[color_of(pc)] += PieceValue[MG][pc];
st->nonPawnMaterial[color_of(pc)] += PieceValue[MG][pc];
}
if (si->epSquare != SQ_NONE)
si->key ^= Zobrist::enpassant[file_of(si->epSquare)];
if (st->epSquare != SQ_NONE)
st->key ^= Zobrist::enpassant[file_of(st->epSquare)];
if (sideToMove == BLACK)
si->key ^= Zobrist::side;
st->key ^= Zobrist::side;
si->key ^= Zobrist::castling[si->castlingRights];
st->key ^= Zobrist::castling[st->castlingRights];
for (Piece pc : Pieces)
for (int cnt = 0; cnt < pieceCount[pc]; ++cnt)
si->materialKey ^= Zobrist::psq[pc][cnt];
st->materialKey ^= Zobrist::psq[pc][cnt];
}
@ -568,8 +568,7 @@ bool Position::pseudo_legal(const Move m) const {
: MoveList<NON_EVASIONS>(*this).contains(m);
// Is not a promotion, so promotion piece must be empty
if (promotion_type(m) - KNIGHT != NO_PIECE_TYPE)
return false;
assert(promotion_type(m) - KNIGHT == NO_PIECE_TYPE);
// If the 'from' square is not occupied by a piece belonging to the side to
// move, the move is obviously not legal.
@ -765,9 +764,6 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
// Update board and piece lists
remove_piece(capsq);
if (type_of(m) == EN_PASSANT)
board[capsq] = NO_PIECE;
// Update material hash key and prefetch access to materialTable
k ^= Zobrist::psq[captured][capsq];
st->materialKey ^= Zobrist::psq[captured][pieceCount[captured]];
@ -868,7 +864,7 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
sideToMove = ~sideToMove;
// Update king attacks used for fast check detection
set_check_info(st);
set_check_info();
// Calculate the repetition info. It is the ply distance from the previous
// occurrence of the same position, negative in the 3-fold case, or zero
@ -1020,7 +1016,7 @@ void Position::do_null_move(StateInfo& newSt) {
sideToMove = ~sideToMove;
set_check_info(st);
set_check_info();
st->repetition = 0;
@ -1065,7 +1061,7 @@ Key Position::key_after(Move m) const {
/// SEE value of move is greater or equal to the given threshold. We'll use an
/// algorithm similar to alpha-beta pruning with a null window.
bool Position::see_ge(Move m, Value threshold) const {
bool Position::see_ge(Move m, Bitboard& occupied, Value threshold) const {
assert(is_ok(m));
@ -1084,7 +1080,7 @@ bool Position::see_ge(Move m, Value threshold) const {
return true;
assert(color_of(piece_on(from)) == sideToMove);
Bitboard occupied = pieces() ^ from ^ to;
occupied = pieces() ^ from ^ to; // xoring to is important for pinned piece logic
Color stm = sideToMove;
Bitboard attackers = attackers_to(to, occupied);
Bitboard stmAttackers, bb;
@ -1115,45 +1111,44 @@ bool Position::see_ge(Move m, Value threshold) const {
// the bitboard 'attackers' any X-ray attackers behind it.
if ((bb = stmAttackers & pieces(PAWN)))
{
occupied ^= least_significant_square_bb(bb);
if ((swap = PawnValueMg - swap) < res)
break;
occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN);
}
else if ((bb = stmAttackers & pieces(KNIGHT)))
{
occupied ^= least_significant_square_bb(bb);
if ((swap = KnightValueMg - swap) < res)
break;
occupied ^= least_significant_square_bb(bb);
}
else if ((bb = stmAttackers & pieces(BISHOP)))
{
occupied ^= least_significant_square_bb(bb);
if ((swap = BishopValueMg - swap) < res)
break;
occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN);
}
else if ((bb = stmAttackers & pieces(ROOK)))
{
occupied ^= least_significant_square_bb(bb);
if ((swap = RookValueMg - swap) < res)
break;
occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<ROOK>(to, occupied) & pieces(ROOK, QUEEN);
}
else if ((bb = stmAttackers & pieces(QUEEN)))
{
occupied ^= least_significant_square_bb(bb);
if ((swap = QueenValueMg - swap) < res)
break;
occupied ^= least_significant_square_bb(bb);
attackers |= (attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN))
| (attacks_bb<ROOK >(to, occupied) & pieces(ROOK , QUEEN));
}
@ -1167,6 +1162,11 @@ bool Position::see_ge(Move m, Value threshold) const {
return bool(res);
}
bool Position::see_ge(Move m, Value threshold) const {
Bitboard occupied;
return see_ge(m, occupied, threshold);
}
/// Position::is_draw() tests whether the position is drawn by 50-move rule
/// or by repetition. It does not detect stalemates.
@ -1323,12 +1323,6 @@ bool Position::pos_is_ok() const {
if (p1 != p2 && (pieces(p1) & pieces(p2)))
assert(0 && "pos_is_ok: Bitboards");
StateInfo si = *st;
ASSERT_ALIGNED(&si, Eval::NNUE::CacheLineSize);
set_state(&si);
if (std::memcmp(&si, st, sizeof(StateInfo)))
assert(0 && "pos_is_ok: State");
for (Piece pc : Pieces)
if ( pieceCount[pc] != popcount(pieces(color_of(pc), type_of(pc)))

43
DroidFishApp/src/main/cpp/stockfish/position.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -68,7 +68,7 @@ struct StateInfo {
/// start position to the position just before the search starts). Needed by
/// 'draw by repetition' detection. Use a std::deque because pointers to
/// elements are not invalidated upon list resizing.
typedef std::unique_ptr<std::deque<StateInfo>> StateListPtr;
using StateListPtr = std::unique_ptr<std::deque<StateInfo>>;
/// Position class stores information regarding the board representation as
@ -92,10 +92,9 @@ public:
// Position representation
Bitboard pieces(PieceType pt) const;
Bitboard pieces(PieceType pt1, PieceType pt2) const;
template<typename ...PieceTypes> Bitboard pieces(PieceType pt, PieceTypes... pts) const;
Bitboard pieces(Color c) const;
Bitboard pieces(Color c, PieceType pt) const;
Bitboard pieces(Color c, PieceType pt1, PieceType pt2) const;
template<typename ...PieceTypes> Bitboard pieces(Color c, PieceTypes... pts) const;
Piece piece_on(Square s) const;
Square ep_square() const;
bool empty(Square s) const;
@ -126,6 +125,7 @@ public:
bool legal(Move m) const;
bool pseudo_legal(const Move m) const;
bool capture(Move m) const;
bool capture_stage(Move m) const;
bool gives_check(Move m) const;
Piece moved_piece(Move m) const;
Piece captured_piece() const;
@ -144,6 +144,7 @@ public:
// Static Exchange Evaluation
bool see_ge(Move m, Value threshold = VALUE_ZERO) const;
bool see_ge(Move m, Bitboard& occupied, Value threshold = VALUE_ZERO) const;
// Accessing hash keys
Key key() const;
@ -178,8 +179,8 @@ public:
private:
// Initialization helpers (used while setting up a position)
void set_castling_right(Color c, Square rfrom);
void set_state(StateInfo* si) const;
void set_check_info(StateInfo* si) const;
void set_state() const;
void set_check_info() const;
// Other helpers
void move_piece(Square from, Square to);
@ -204,7 +205,7 @@ private:
bool chess960;
};
extern std::ostream& operator<<(std::ostream& os, const Position& pos);
std::ostream& operator<<(std::ostream& os, const Position& pos);
inline Color Position::side_to_move() const {
return sideToMove;
@ -227,20 +228,18 @@ inline Bitboard Position::pieces(PieceType pt = ALL_PIECES) const {
return byTypeBB[pt];
}
inline Bitboard Position::pieces(PieceType pt1, PieceType pt2) const {
return pieces(pt1) | pieces(pt2);
template<typename ...PieceTypes>
inline Bitboard Position::pieces(PieceType pt, PieceTypes... pts) const {
return pieces(pt) | pieces(pts...);
}
inline Bitboard Position::pieces(Color c) const {
return byColorBB[c];
}
inline Bitboard Position::pieces(Color c, PieceType pt) const {
return pieces(c) & pieces(pt);
}
inline Bitboard Position::pieces(Color c, PieceType pt1, PieceType pt2) const {
return pieces(c) & (pieces(pt1) | pieces(pt2));
template<typename ...PieceTypes>
inline Bitboard Position::pieces(Color c, PieceTypes... pts) const {
return pieces(c) & pieces(pts...);
}
template<PieceType Pt> inline int Position::count(Color c) const {
@ -383,8 +382,16 @@ inline bool Position::is_chess960() const {
inline bool Position::capture(Move m) const {
assert(is_ok(m));
// Castling is encoded as "king captures rook"
return (!empty(to_sq(m)) && type_of(m) != CASTLING) || type_of(m) == EN_PASSANT;
return (!empty(to_sq(m)) && type_of(m) != CASTLING)
|| type_of(m) == EN_PASSANT;
}
// returns true if a move is generated from the capture stage
// having also queen promotions covered, i.e. consistency with the capture stage move generation
// is needed to avoid the generation of duplicate moves.
inline bool Position::capture_stage(Move m) const {
assert(is_ok(m));
return capture(m) || promotion_type(m) == QUEEN;
}
inline Piece Position::captured_piece() const {

2
DroidFishApp/src/main/cpp/stockfish/psqt.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

4
DroidFishApp/src/main/cpp/stockfish/psqt.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -30,7 +30,7 @@ namespace Stockfish::PSQT
extern Score psq[PIECE_NB][SQUARE_NB];
// Fill psqt array from a set of internally linked parameters
extern void init();
void init();
} // namespace Stockfish::PSQT

537
DroidFishApp/src/main/cpp/stockfish/search.cpp
View File

File diff suppressed because it is too large Load Diff

5
DroidFishApp/src/main/cpp/stockfish/search.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -71,6 +71,7 @@ struct RootMove {
Value score = -VALUE_INFINITE;
Value previousScore = -VALUE_INFINITE;
Value averageScore = -VALUE_INFINITE;
Value uciScore = -VALUE_INFINITE;
bool scoreLowerbound = false;
bool scoreUpperbound = false;
int selDepth = 0;
@ -79,7 +80,7 @@ struct RootMove {
std::vector<Move> pv;
};
typedef std::vector<RootMove> RootMoves;
using RootMoves = std::vector<RootMove>;
/// LimitsType struct stores information sent by GUI about available time to

28
DroidFishApp/src/main/cpp/stockfish/syzygy/tbprobe.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -24,9 +24,10 @@
#include <fstream>
#include <iostream>
#include <list>
#include <sstream>
#include <type_traits>
#include <mutex>
#include <sstream>
#include <string_view>
#include <type_traits>
#include "../bitboard.h"
#include "../movegen.h"
@ -70,7 +71,7 @@ enum TBFlag { STM = 1, Mapped = 2, WinPlies = 4, LossPlies = 8, Wide = 16, Singl
inline WDLScore operator-(WDLScore d) { return WDLScore(-int(d)); }
inline Square operator^(Square s, int i) { return Square(int(s) ^ i); }
const std::string PieceToChar = " PNBRQK pnbrqk";
constexpr std::string_view PieceToChar = " PNBRQK pnbrqk";
int MapPawns[SQUARE_NB];
int MapB1H1H7[SQUARE_NB];
@ -141,7 +142,7 @@ struct SparseEntry {
static_assert(sizeof(SparseEntry) == 6, "SparseEntry must be 6 bytes");
typedef uint16_t Sym; // Huffman symbol
using Sym = uint16_t; // Huffman symbol
struct LR {
enum Side { Left, Right };
@ -199,12 +200,9 @@ public:
}
}
// Memory map the file and check it. File should be already open and will be
// closed after mapping.
// Memory map the file and check it.
uint8_t* map(void** baseAddress, uint64_t* mapping, TBType type) {
assert(is_open());
if (is_open())
close(); // Need to re-open to get native file descriptor
#ifndef _WIN32
@ -236,7 +234,7 @@ public:
}
#else
// Note FILE_FLAG_RANDOM_ACCESS is only a hint to Windows and as such may get ignored.
HANDLE fd = CreateFile(fname.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr,
HANDLE fd = CreateFileA(fname.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr,
OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, nullptr);
if (fd == INVALID_HANDLE_VALUE)
@ -329,7 +327,7 @@ struct PairsData {
// first access, when the corresponding file is memory mapped.
template<TBType Type>
struct TBTable {
typedef typename std::conditional<Type == WDL, WDLScore, int>::type Ret;
using Ret = typename std::conditional<Type == WDL, WDLScore, int>::type;
static constexpr int Sides = Type == WDL ? 2 : 1;
@ -473,8 +471,6 @@ TBTables TBTables;
// If the corresponding file exists two new objects TBTable<WDL> and TBTable<DTZ>
// are created and added to the lists and hash table. Called at init time.
void TBTables::add(const std::vector<PieceType>& pieces) {
if (sizeof(char*) < 8 && pieces.size() >= 6)
return; // Not enough address space to support 6-men TB on 32-bit OS
std::string code;
@ -1516,7 +1512,7 @@ int Tablebases::probe_dtz(Position& pos, ProbeState* result) {
// A return value false indicates that not all probes were successful.
bool Tablebases::root_probe(Position& pos, Search::RootMoves& rootMoves) {
ProbeState result;
ProbeState result = OK;
StateInfo st;
// Obtain 50-move counter for the root position
@ -1595,7 +1591,7 @@ bool Tablebases::root_probe_wdl(Position& pos, Search::RootMoves& rootMoves) {
static const int WDL_to_rank[] = { -MAX_DTZ, -MAX_DTZ + 101, 0, MAX_DTZ - 101, MAX_DTZ };
ProbeState result;
ProbeState result = OK;
StateInfo st;
WDLScore wdl;

2
DroidFishApp/src/main/cpp/stockfish/syzygy/tbprobe.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

44
DroidFishApp/src/main/cpp/stockfish/thread.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -60,7 +60,6 @@ void Thread::clear() {
counterMoves.fill(MOVE_NONE);
mainHistory.fill(0);
captureHistory.fill(0);
previousDepth = 0;
for (bool inCheck : { false, true })
for (StatsType c : { NoCaptures, Captures })
@ -73,9 +72,9 @@ void Thread::clear() {
/// Thread::start_searching() wakes up the thread that will start the search
void Thread::start_searching() {
std::lock_guard<std::mutex> lk(mutex);
mutex.lock();
searching = true;
mutex.unlock(); // Unlock before notifying saves a few CPU-cycles
cv.notify_one(); // Wake up the thread in idle_loop()
}
@ -125,20 +124,20 @@ void Thread::idle_loop() {
void ThreadPool::set(size_t requested) {
if (size() > 0) // destroy any existing thread(s)
if (threads.size() > 0) // destroy any existing thread(s)
{
main()->wait_for_search_finished();
while (size() > 0)
delete back(), pop_back();
while (threads.size() > 0)
delete threads.back(), threads.pop_back();
}
if (requested > 0) // create new thread(s)
{
push_back(new MainThread(0));
threads.push_back(new MainThread(0));
while (size() < requested)
push_back(new Thread(size()));
while (threads.size() < requested)
threads.push_back(new Thread(threads.size()));
clear();
// Reallocate the hash with the new threadpool size
@ -154,7 +153,7 @@ void ThreadPool::set(size_t requested) {
void ThreadPool::clear() {
for (Thread* th : *this)
for (Thread* th : threads)
th->clear();
main()->callsCnt = 0;
@ -187,7 +186,7 @@ void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
Tablebases::rank_root_moves(pos, rootMoves);
// After ownership transfer 'states' becomes empty, so if we stop the search
// and call 'go' again without setting a new position states.get() == NULL.
// and call 'go' again without setting a new position states.get() == nullptr.
assert(states.get() || setupStates.get());
if (states.get())
@ -198,7 +197,7 @@ void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
// be deduced from a fen string, so set() clears them and they are set from
// setupStates->back() later. The rootState is per thread, earlier states are shared
// since they are read-only.
for (Thread* th : *this)
for (Thread* th : threads)
{
th->nodes = th->tbHits = th->nmpMinPly = th->bestMoveChanges = 0;
th->rootDepth = th->completedDepth = 0;
@ -212,12 +211,12 @@ void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
Thread* ThreadPool::get_best_thread() const {
Thread* bestThread = front();
Thread* bestThread = threads.front();
std::map<Move, int64_t> votes;
Value minScore = VALUE_NONE;
// Find minimum score of all threads
for (Thread* th: *this)
for (Thread* th: threads)
minScore = std::min(minScore, th->rootMoves[0].score);
// Vote according to score and depth, and select the best thread
@ -225,10 +224,10 @@ Thread* ThreadPool::get_best_thread() const {
return (th->rootMoves[0].score - minScore + 14) * int(th->completedDepth);
};
for (Thread* th : *this)
for (Thread* th : threads)
votes[th->rootMoves[0].pv[0]] += thread_value(th);
for (Thread* th : *this)
for (Thread* th : threads)
if (abs(bestThread->rootMoves[0].score) >= VALUE_TB_WIN_IN_MAX_PLY)
{
// Make sure we pick the shortest mate / TB conversion or stave off mate the longest
@ -239,7 +238,8 @@ Thread* ThreadPool::get_best_thread() const {
|| ( th->rootMoves[0].score > VALUE_TB_LOSS_IN_MAX_PLY
&& ( votes[th->rootMoves[0].pv[0]] > votes[bestThread->rootMoves[0].pv[0]]
|| ( votes[th->rootMoves[0].pv[0]] == votes[bestThread->rootMoves[0].pv[0]]
&& thread_value(th) > thread_value(bestThread)))))
&& thread_value(th) * int(th->rootMoves[0].pv.size() > 2)
> thread_value(bestThread) * int(bestThread->rootMoves[0].pv.size() > 2)))))
bestThread = th;
return bestThread;
@ -250,8 +250,8 @@ Thread* ThreadPool::get_best_thread() const {
void ThreadPool::start_searching() {
for (Thread* th : *this)
if (th != front())
for (Thread* th : threads)
if (th != threads.front())
th->start_searching();
}
@ -260,8 +260,8 @@ void ThreadPool::start_searching() {
void ThreadPool::wait_for_search_finished() const {
for (Thread* th : *this)
if (th != front())
for (Thread* th : threads)
if (th != threads.front())
th->wait_for_search_finished();
}

20
DroidFishApp/src/main/cpp/stockfish/thread.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -60,16 +60,14 @@ public:
Pawns::Table pawnsTable;
Material::Table materialTable;
size_t pvIdx, pvLast;
RunningAverage complexityAverage;
std::atomic<uint64_t> nodes, tbHits, bestMoveChanges;
int selDepth, nmpMinPly;
Color nmpColor;
Value bestValue, optimism[COLOR_NB];
Position rootPos;
StateInfo rootState;
Search::RootMoves rootMoves;
Depth rootDepth, completedDepth, previousDepth;
Depth rootDepth, completedDepth;
Value rootDelta;
CounterMoveHistory counterMoves;
ButterflyHistory mainHistory;
@ -101,13 +99,13 @@ struct MainThread : public Thread {
/// parking and, most importantly, launching a thread. All the access to threads
/// is done through this class.
struct ThreadPool : public std::vector<Thread*> {
struct ThreadPool {
void start_thinking(Position&, StateListPtr&, const Search::LimitsType&, bool = false);
void clear();
void set(size_t);
MainThread* main() const { return static_cast<MainThread*>(front()); }
MainThread* main() const { return static_cast<MainThread*>(threads.front()); }
uint64_t nodes_searched() const { return accumulate(&Thread::nodes); }
uint64_t tb_hits() const { return accumulate(&Thread::tbHits); }
Thread* get_best_thread() const;
@ -116,13 +114,21 @@ struct ThreadPool : public std::vector<Thread*> {
std::atomic_bool stop, increaseDepth;
auto cbegin() const noexcept { return threads.cbegin(); }
auto begin() noexcept { return threads.begin(); }
auto end() noexcept { return threads.end(); }
auto cend() const noexcept { return threads.cend(); }
auto size() const noexcept { return threads.size(); }
auto empty() const noexcept { return threads.empty(); }
private:
StateListPtr setupStates;
std::vector<Thread*> threads;
uint64_t accumulate(std::atomic<uint64_t> Thread::* member) const {
uint64_t sum = 0;
for (Thread* th : *this)
for (Thread* th : threads)
sum += (th->*member).load(std::memory_order_relaxed);
return sum;
}

8
DroidFishApp/src/main/cpp/stockfish/thread_win32_osx.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -41,7 +41,7 @@ void* start_routine(void* ptr)
P* p = reinterpret_cast<P*>(ptr);
(p->first->*(p->second))(); // Call member function pointer
delete p;
return NULL;
return nullptr;
}
class NativeThread {
@ -56,7 +56,7 @@ public:
pthread_attr_setstacksize(attr, TH_STACK_SIZE);
pthread_create(&thread, attr, start_routine<T>, new P(obj, fun));
}
void join() { pthread_join(thread, NULL); }
void join() { pthread_join(thread, nullptr); }
};
} // namespace Stockfish
@ -65,7 +65,7 @@ public:
namespace Stockfish {
typedef std::thread NativeThread;
using NativeThread = std::thread;
} // namespace Stockfish

10
DroidFishApp/src/main/cpp/stockfish/timeman.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -36,6 +36,12 @@ TimeManagement Time; // Our global time management object
void TimeManagement::init(Search::LimitsType& limits, Color us, int ply) {
// if we have no time, no need to initialize TM, except for the start time,
// which is used by movetime.
startTime = limits.startTime;
if (limits.time[us] == 0)
return;
TimePoint moveOverhead = TimePoint(Options["Move Overhead"]);
TimePoint slowMover = TimePoint(Options["Slow Mover"]);
TimePoint npmsec = TimePoint(Options["nodestime"]);
@ -59,8 +65,6 @@ void TimeManagement::init(Search::LimitsType& limits, Color us, int ply) {
limits.npmsec = npmsec;
}
startTime = limits.startTime;
// Maximum move horizon of 50 moves
int mtg = limits.movestogo ? std::min(limits.movestogo, 50) : 50;

2
DroidFishApp/src/main/cpp/stockfish/timeman.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

6
DroidFishApp/src/main/cpp/stockfish/tt.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -87,7 +87,7 @@ void TranspositionTable::clear() {
std::vector<std::thread> threads;
for (size_t idx = 0; idx < Options["Threads"]; ++idx)
for (size_t idx = 0; idx < size_t(Options["Threads"]); ++idx)
{
threads.emplace_back([this, idx]() {
@ -98,7 +98,7 @@ void TranspositionTable::clear() {
// Each thread will zero its part of the hash table
const size_t stride = size_t(clusterCount / Options["Threads"]),
start = size_t(stride * idx),
len = idx != Options["Threads"] - 1 ?
len = idx != size_t(Options["Threads"]) - 1 ?
stride : clusterCount - start;
std::memset(&table[start], 0, len * sizeof(Cluster));

2
DroidFishApp/src/main/cpp/stockfish/tt.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

2
DroidFishApp/src/main/cpp/stockfish/tune.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by

8
DroidFishApp/src/main/cpp/stockfish/tune.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -26,8 +26,8 @@
namespace Stockfish {
typedef std::pair<int, int> Range; // Option's min-max values
typedef Range (RangeFun) (int);
using Range = std::pair<int, int>; // Option's min-max values
using RangeFun = Range (int);
// Default Range function, to calculate Option's min-max values
inline Range default_range(int v) {
@ -75,7 +75,7 @@ struct SetRange {
class Tune {
typedef void (PostUpdate) (); // Post-update function
using PostUpdate = void (); // Post-update function
Tune() { read_results(); }
Tune(const Tune&) = delete;

21
DroidFishApp/src/main/cpp/stockfish/types.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -103,8 +103,8 @@ constexpr bool Is64Bit = true;
constexpr bool Is64Bit = false;
#endif
typedef uint64_t Key;
typedef uint64_t Bitboard;
using Key = uint64_t;
using Bitboard = uint64_t;
constexpr int MAX_MOVES = 256;
constexpr int MAX_PLY = 246;
@ -186,6 +186,9 @@ enum Value : int {
VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY,
VALUE_MATED_IN_MAX_PLY = -VALUE_MATE_IN_MAX_PLY,
// In the code, we make the assumption that these values
// are such that non_pawn_material() can be used to uniquely
// identify the material on the board.
PawnValueMg = 126, PawnValueEg = 208,
KnightValueMg = 781, KnightValueEg = 854,
BishopValueMg = 825, BishopValueEg = 915,
@ -215,7 +218,7 @@ constexpr Value PieceValue[PHASE_NB][PIECE_NB] = {
VALUE_ZERO, PawnValueEg, KnightValueEg, BishopValueEg, RookValueEg, QueenValueEg, VALUE_ZERO, VALUE_ZERO }
};
typedef int Depth;
using Depth = int;
enum : int {
DEPTH_QS_CHECKS = 0,
@ -413,6 +416,10 @@ inline Color color_of(Piece pc) {
return Color(pc >> 3);
}
constexpr bool is_ok(Move m) {
return m != MOVE_NONE && m != MOVE_NULL;
}
constexpr bool is_ok(Square s) {
return s >= SQ_A1 && s <= SQ_H8;
}
@ -442,10 +449,12 @@ constexpr Direction pawn_push(Color c) {
}
constexpr Square from_sq(Move m) {
assert(is_ok(m));
return Square((m >> 6) & 0x3F);
}
constexpr Square to_sq(Move m) {
assert(is_ok(m));
return Square(m & 0x3F);
}
@ -470,10 +479,6 @@ constexpr Move make(Square from, Square to, PieceType pt = KNIGHT) {
return Move(T + ((pt - KNIGHT) << 12) + (from << 6) + to);
}
constexpr bool is_ok(Move m) {
return from_sq(m) != to_sq(m); // Catch MOVE_NULL and MOVE_NONE
}
/// Based on a congruential pseudo random number generator
constexpr Key make_key(uint64_t seed) {
return seed * 6364136223846793005ULL + 1442695040888963407ULL;

25
DroidFishApp/src/main/cpp/stockfish/uci.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -22,6 +22,7 @@
#include <sstream>
#include <string>
#include "benchmark.h"
#include "evaluate.h"
#include "movegen.h"
#include "position.h"
@ -31,13 +32,12 @@
#include "tt.h"
#include "uci.h"
#include "syzygy/tbprobe.h"
#include "nnue/evaluate_nnue.h"
using namespace std;
namespace Stockfish {
extern vector<string> setup_bench(const Position&, istream&);
namespace {
// FEN string for the initial position in standard chess
@ -161,7 +161,7 @@ namespace {
uint64_t num, nodes = 0, cnt = 1;
vector<string> list = setup_bench(pos, args);
num = count_if(list.begin(), list.end(), [](string s) { return s.find("go ") == 0 || s.find("eval") == 0; });
num = count_if(list.begin(), list.end(), [](const string& s) { return s.find("go ") == 0 || s.find("eval") == 0; });
TimePoint elapsed = now();
@ -207,8 +207,8 @@ namespace {
// The coefficients of a third-order polynomial fit is based on the fishtest data
// for two parameters that need to transform eval to the argument of a logistic
// function.
constexpr double as[] = { -0.58270499, 2.68512549, 15.24638015, 344.49745382};
constexpr double bs[] = { -2.65734562, 15.96509799, -20.69040836, 73.61029937 };
constexpr double as[] = { 0.38036525, -2.82015070, 23.17882135, 307.36768407};
constexpr double bs[] = { -2.29434733, 13.27689788, -14.26828904, 63.45318330 };
// Enforce that NormalizeToPawnValue corresponds to a 50% win rate at ply 64
static_assert(UCI::NormalizeToPawnValue == int(as[0] + as[1] + as[2] + as[3]));
@ -315,8 +315,13 @@ string UCI::value(Value v) {
stringstream ss;
if (abs(v) < VALUE_MATE_IN_MAX_PLY)
if (abs(v) < VALUE_TB_WIN_IN_MAX_PLY)
ss << "cp " << v * 100 / NormalizeToPawnValue;
else if (abs(v) < VALUE_MATE_IN_MAX_PLY)
{
const int ply = VALUE_MATE_IN_MAX_PLY - 1 - std::abs(v); // recompute ss->ply
ss << "cp " << (v > 0 ? 20000 - ply : -20000 + ply);
}
else
ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2;
@ -354,15 +359,15 @@ std::string UCI::square(Square s) {
string UCI::move(Move m, bool chess960) {
Square from = from_sq(m);
Square to = to_sq(m);
if (m == MOVE_NONE)
return "(none)";
if (m == MOVE_NULL)
return "0000";
Square from = from_sq(m);
Square to = to_sq(m);
if (type_of(m) == CASTLING && !chess960)
to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));

10
DroidFishApp/src/main/cpp/stockfish/uci.h
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -35,7 +35,7 @@ namespace UCI {
// the win_rate_model() such that Stockfish outputs an advantage of
// "100 centipawns" for a position if the engine has a 50% probability to win
// from this position in selfplay at fishtest LTC time control.
const int NormalizeToPawnValue = 361;
const int NormalizeToPawnValue = 328;
class Option;
@ -45,12 +45,12 @@ struct CaseInsensitiveLess {
};
/// The options container is defined as a std::map
typedef std::map<std::string, Option, CaseInsensitiveLess> OptionsMap;
using OptionsMap = std::map<std::string, Option, CaseInsensitiveLess>;
/// The Option class implements each option as specified by the UCI protocol
class Option {
typedef void (*OnChange)(const Option&);
using OnChange = void (*)(const Option&);
public:
Option(OnChange = nullptr);
@ -61,7 +61,7 @@ public:
Option& operator=(const std::string&);
void operator<<(const Option&);
operator double() const;
operator int() const;
operator std::string() const;
bool operator==(const char*) const;

22
DroidFishApp/src/main/cpp/stockfish/ucioption.cpp
View File

@ -1,6 +1,6 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2022 The Stockfish developers (see AUTHORS file)
Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -38,13 +38,13 @@ UCI::OptionsMap Options; // Global object
namespace UCI {
/// 'On change' actions, triggered by an option's value change
void on_clear_hash(const Option&) { Search::clear(); }
void on_hash_size(const Option& o) { TT.resize(size_t(o)); }
void on_logger(const Option& o) { start_logger(o); }
void on_threads(const Option& o) { Threads.set(size_t(o)); }
void on_tb_path(const Option& o) { Tablebases::init(o); }
void on_use_NNUE(const Option& ) { Eval::NNUE::init(); }
void on_eval_file(const Option& ) { Eval::NNUE::init(); }
static void on_clear_hash(const Option&) { Search::clear(); }
static void on_hash_size(const Option& o) { TT.resize(size_t(o)); }
static void on_logger(const Option& o) { start_logger(o); }
static void on_threads(const Option& o) { Threads.set(size_t(o)); }
static void on_tb_path(const Option& o) { Tablebases::init(o); }
static void on_use_NNUE(const Option&) { Eval::NNUE::init(); }
static void on_eval_file(const Option&) { Eval::NNUE::init(); }
/// Our case insensitive less() function as required by UCI protocol
bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
@ -73,7 +73,7 @@ void init(OptionsMap& o) {
o["UCI_Chess960"] << Option(false);
o["UCI_AnalyseMode"] << Option(false);
o["UCI_LimitStrength"] << Option(false);
o["UCI_Elo"] << Option(1350, 1350, 2850);
o["UCI_Elo"] << Option(1320, 1320, 3190);
o["UCI_ShowWDL"] << Option(false);
o["SyzygyPath"] << Option("<empty>", on_tb_path);
o["SyzygyProbeDepth"] << Option(1, 1, 100);
@ -128,9 +128,9 @@ Option::Option(double v, int minv, int maxv, OnChange f) : type("spin"), min(min
Option::Option(const char* v, const char* cur, OnChange f) : type("combo"), min(0), max(0), on_change(f)
{ defaultValue = v; currentValue = cur; }
Option::operator double() const {
Option::operator int() const {
assert(type == "check" || type == "spin");
return (type == "spin" ? stof(currentValue) : currentValue == "true");
return (type == "spin" ? std::stoi(currentValue) : currentValue == "true");
}
Option::operator std::string() const {

2
DroidFishApp/src/main/java/org/petero/droidfish/engine/InternalStockFish.java
View File

@ -36,7 +36,7 @@ import org.petero.droidfish.EngineOptions;
/** Stockfish engine running as process, started from assets resource. */
public class InternalStockFish extends ExternalEngine {
private static final String defaultNet = "nn-ad9b42354671.nnue";
private static final String defaultNet = "nn-5af11540bbfe.nnue";
private static final String netOption = "evalfile";
private File defaultNetFile; // To get the full path of the copied default network file