From 07a2619b62a25910a32ad8a4e9912f748338580f Mon Sep 17 00:00:00 2001 From: FauziAkram Date: Fri, 15 Dec 2023 14:29:44 +0300 Subject: [PATCH] Improvement of Time Management Parameters Passed STC: https://tests.stockfishchess.org/tests/view/6579c5574d789acf40aaf914 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 44672 W: 11354 L: 11030 D: 22288 Ptnml(0-2): 140, 5033, 11685, 5319, 159 Passed LTC: https://tests.stockfishchess.org/tests/view/657ad7f44d789acf40ab105e LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 40932 W: 10275 L: 9950 D: 20707 Ptnml(0-2): 21, 4316, 11473, 4629, 27 Passed non-regression Sudden death 10+0: https://tests.stockfishchess.org/tests/view/657b9b9e393ac02e7911f1a8 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 21384 W: 5171 L: 4925 D: 11288 Ptnml(0-2): 112, 2420, 5409, 2612, 139 closes https://github.com/official-stockfish/Stockfish/pull/4923 No functional change --- src/search.cpp | 6 +++--- src/timeman.cpp | 12 ++++++------ 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/src/search.cpp b/src/search.cpp index 27c2c84e..ce71c788 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -471,12 +471,12 @@ void Thread::search() { { double fallingEval = (66 + 14 * (mainThread->bestPreviousAverageScore - bestValue) + 6 * (mainThread->iterValue[iterIdx] - bestValue)) - / 583.0; - fallingEval = std::clamp(fallingEval, 0.5, 1.5); + / 616.6; + fallingEval = std::clamp(fallingEval, 0.51, 1.51); // If the bestMove is stable over several iterations, reduce time accordingly timeReduction = lastBestMoveDepth + 8 < completedDepth ? 1.56 : 0.69; - double reduction = (1.4 + mainThread->previousTimeReduction) / (2.03 * timeReduction); + double reduction = (1.4 + mainThread->previousTimeReduction) / (2.17 * timeReduction); double bestMoveInstability = 1 + 1.79 * totBestMoveChanges / Threads.size(); double totalTime = Time.optimum() * fallingEval * reduction * bestMoveInstability; diff --git a/src/timeman.cpp b/src/timeman.cpp index 9ff422fe..f404ee0c 100644 --- a/src/timeman.cpp +++ b/src/timeman.cpp @@ -71,21 +71,21 @@ void TimeManagement::init(Search::LimitsType& limits, Color us, int ply) { - moveOverhead * (2 + mtg)); // Use extra time with larger increments - double optExtra = std::clamp(1.0 + 12.5 * limits.inc[us] / limits.time[us], 1.0, 1.12); + double optExtra = std::clamp(1.0 + 12.5 * limits.inc[us] / limits.time[us], 1.0, 1.11); // Calculate time constants based on current time left. - double optConstant = std::min(0.00335 + 0.0003 * std::log10(limits.time[us] / 1000.0), 0.0048); - double maxConstant = std::max(3.6 + 3.0 * std::log10(limits.time[us] / 1000.0), 2.7); + double optConstant = std::min(0.00334 + 0.0003 * std::log10(limits.time[us] / 1000.0), 0.0049); + double maxConstant = std::max(3.4 + 3.0 * std::log10(limits.time[us] / 1000.0), 2.76); // x basetime (+ z increment) // If there is a healthy increment, timeLeft can exceed actual available // game time for the current move, so also cap to 20% of available game time. if (limits.movestogo == 0) { - optScale = std::min(0.0120 + std::pow(ply + 3.3, 0.44) * optConstant, - 0.2 * limits.time[us] / double(timeLeft)) + optScale = std::min(0.0120 + std::pow(ply + 3.1, 0.44) * optConstant, + 0.21 * limits.time[us] / double(timeLeft)) * optExtra; - maxScale = std::min(6.8, maxConstant + ply / 12.2); + maxScale = std::min(6.9, maxConstant + ply / 12.2); } // x moves in y seconds (+ z increment) -- 2.39.2