-
-
-////
-//// Functions
-////
-
-/// benchmark() runs a simple benchmark by letting Stockfish analyze a set
-/// of positions for a given limit each. There are five parameters; the
-/// transposition table size, the number of search threads that should
-/// be used, the limit value spent for each position (optional, default
-/// is ply 12), an optional file name where to look for positions in fen
-/// format (default are the BenchmarkPositions defined above) and the type
-/// of the limit value: depth (default), time in secs or number of nodes.
-/// The analysis is written to a file named bench.txt.
-
-void benchmark(int argc, char* argv[]) {
-
- vector<string> positions;
- string ttSize, threads, valStr, posFile, valType;
- int val, secsPerPos, maxDepth, maxNodes;
-
- ttSize = argc > 2 ? argv[2] : "128";
- threads = argc > 3 ? argv[3] : "1";
- valStr = argc > 4 ? argv[4] : "12";
- posFile = argc > 5 ? argv[5] : "default";
- valType = argc > 6 ? argv[6] : "depth";
-
- Options["Hash"].set_value(ttSize);
- Options["Threads"].set_value(threads);
- Options["OwnBook"].set_value("false");
- Options["Use Search Log"].set_value("true");
- Options["Search Log Filename"].set_value("bench.txt");
-
- secsPerPos = maxDepth = maxNodes = 0;
- val = atoi(valStr.c_str());
-
- if (valType == "depth" || valType == "perft")
- maxDepth = val;
- else if (valType == "time")
- secsPerPos = val * 1000;
- else
- maxNodes = val;
-
- if (posFile != "default")
- {
- ifstream fenFile(posFile.c_str());
- if (!fenFile.is_open())
- {
- cerr << "Unable to open positions file " << posFile << endl;
- exit(EXIT_FAILURE);
- }
- string pos;
- while (fenFile.good())
- {
- getline(fenFile, pos);
- if (!pos.empty())
- positions.push_back(pos);
- }
- fenFile.close();
- } else
- for (int i = 0; !BenchmarkPositions[i].empty(); i++)
- positions.push_back(BenchmarkPositions[i]);
-
- vector<string>::iterator it;
- int cnt = 1;
- int64_t totalNodes = 0;
- int startTime = get_system_time();
-
- for (it = positions.begin(); it != positions.end(); ++it, ++cnt)
- {
- Move moves[1] = { MOVE_NONE };
- int dummy[2] = { 0, 0 };
- Position pos(*it, false, 0);
- cerr << "\nBench position: " << cnt << '/' << positions.size() << endl << endl;
- if (valType == "perft")
- {
- int64_t perftCnt = perft(pos, maxDepth * ONE_PLY);
- cerr << "\nPerft " << maxDepth << " result (nodes searched): " << perftCnt << endl << endl;
- totalNodes += perftCnt;
- } else {
- if (!think(pos, false, false, dummy, dummy, 0, maxDepth, maxNodes, secsPerPos, moves))
- break;
- totalNodes += pos.nodes_searched();
- }
- }
-
- cnt = get_system_time() - startTime;
- cerr << "==============================="
- << "\nTotal time (ms) : " << cnt
- << "\nNodes searched : " << totalNodes
- << "\nNodes/second : " << (int)(totalNodes/(cnt/1000.0)) << endl << endl;
-
- // Under MS Visual C++ debug window always unconditionally closes
- // when program exits, this is bad because we want to read results before.
- #if (defined(WINDOWS) || defined(WIN32) || defined(WIN64))
- cerr << "Press any key to exit" << endl;
- cin >> ttSize;
- #endif
+// clang-format on
+
+} // namespace
+
+namespace Stockfish {
+
+// Builds a list of UCI commands to be run by bench. There
+// are five parameters: TT size in MB, number of search threads that
+// should be used, the limit value spent for each position, a file name
+// where to look for positions in FEN format, and the type of the limit:
+// depth, perft, nodes and movetime (in milliseconds). Examples:
+//
+// bench : search default positions up to depth 13
+// bench 64 1 15 : search default positions up to depth 15 (TT = 64MB)
+// bench 64 1 100000 default nodes : search default positions for 100K nodes each
+// bench 64 4 5000 current movetime : search current position with 4 threads for 5 sec
+// bench 16 1 5 blah perft : run a perft 5 on positions in file "blah"
+std::vector<std::string> setup_bench(const Position& current, std::istream& is) {
+
+ std::vector<std::string> fens, list;
+ std::string go, token;
+
+ // Assign default values to missing arguments
+ std::string ttSize = (is >> token) ? token : "16";
+ std::string threads = (is >> token) ? token : "1";
+ std::string limit = (is >> token) ? token : "13";
+ std::string fenFile = (is >> token) ? token : "default";
+ std::string limitType = (is >> token) ? token : "depth";
+
+ go = limitType == "eval" ? "eval" : "go " + limitType + " " + limit;
+
+ if (fenFile == "default")
+ fens = Defaults;
+
+ else if (fenFile == "current")
+ fens.push_back(current.fen());
+
+ else
+ {
+ std::string fen;
+ std::ifstream file(fenFile);
+
+ if (!file.is_open())
+ {
+ std::cerr << "Unable to open file " << fenFile << std::endl;
+ exit(EXIT_FAILURE);
+ }
+
+ while (getline(file, fen))
+ if (!fen.empty())
+ fens.push_back(fen);
+
+ file.close();
+ }
+
+ list.emplace_back("setoption name Threads value " + threads);
+ list.emplace_back("setoption name Hash value " + ttSize);
+ list.emplace_back("ucinewgame");
+
+ for (const std::string& fen : fens)
+ if (fen.find("setoption") != std::string::npos)
+ list.emplace_back(fen);
+ else
+ {
+ list.emplace_back("position fen " + fen);
+ list.emplace_back(go);
+ }
+
+ return list;