X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftt.cpp;h=92aaee001824276e49f1090c72ec451070900dd0;hp=7e95a2a4e6dbcd74f374dd534b1b611fd2787a62;hb=4b10578acbe099482ed40200478df4d775c01af5;hpb=0c878adb36c1013944231083d6a7b3b53aa1ad7e diff --git a/src/tt.cpp b/src/tt.cpp index 7e95a2a4..92aaee00 100644 --- a/src/tt.cpp +++ b/src/tt.cpp @@ -63,10 +63,12 @@ void TranspositionTable::resize(size_t mbSize) { Threads.main()->wait_for_search_finished(); - free(mem); + aligned_ttmem_free(mem); - clusterCount = mbSize * 1024 * 1024 / sizeof(Cluster); - table = static_cast(aligned_ttmem_alloc(clusterCount * sizeof(Cluster), mem)); + superClusterCount = mbSize * 1024 * 1024 / (sizeof(Cluster) * ClustersPerSuperCluster); + + table = static_cast( + aligned_ttmem_alloc(superClusterCount * ClustersPerSuperCluster * sizeof(Cluster), mem)); if (!mem) { std::cerr << "Failed to allocate " << mbSize @@ -89,13 +91,15 @@ void TranspositionTable::clear() { { threads.emplace_back([this, idx]() { + const size_t clusterCount = superClusterCount * ClustersPerSuperCluster; + // Thread binding gives faster search on systems with a first-touch policy if (Options["Threads"] > 8) WinProcGroup::bindThisThread(idx); // Each thread will zero its part of the hash table - const size_t stride = clusterCount / Options["Threads"], - start = stride * idx, + const size_t stride = size_t(clusterCount / Options["Threads"]), + start = size_t(stride * idx), len = idx != Options["Threads"] - 1 ? stride : clusterCount - start; @@ -103,7 +107,7 @@ void TranspositionTable::clear() { }); } - for (std::thread& th: threads) + for (std::thread& th : threads) th.join(); }