Use 128 bit multiply for TT index

[stockfish] / src / ucioption.cpp

diff --git a/src/ucioption.cpp b/src/ucioption.cpp
index 16add76eedd30d0e8aaf874ac2f7074a6d99b9c4..7037ea5731752ab8858bd09d4474733ddfa01318 100644 (file)
--- a/src/ucioption.cpp
+++ b/src/ucioption.cpp
@@ -56,8 +56,7 @@ bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const
 
 void init(OptionsMap& o) {
 
-  // at most 2^32 clusters.
-  constexpr int MaxHashMB = Is64Bit ? 131072 : 2048;
+  constexpr int MaxHashMB = Is64Bit ? 33554432 : 2048;
 
   o["Debug Log File"]        << Option("", on_logger);
   o["Contempt"]              << Option(24, -100, 100);