Increase the maximum hash size by a factor of 256

[stockfish] / src / ucioption.cpp

diff --git a/src/ucioption.cpp b/src/ucioption.cpp
index 66fd42d1e27268aa1c1f7b46cab1c3695cb2abb4..90190b53b6cabd4e8f3c29de4e204947e0c23ea4 100644 (file)
--- a/src/ucioption.cpp
+++ b/src/ucioption.cpp
@@ -38,9 +38,9 @@ namespace UCI {
 
 /// 'On change' actions, triggered by an option's value change
 void on_clear_hash(const Option&) { Search::clear(); }
 
 /// '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(o); }
+void on_hash_size(const Option& o) { TT.resize(size_t(o)); }

 void on_logger(const Option& o) { start_logger(o); }
 void on_logger(const Option& o) { start_logger(o); }

-void on_threads(const Option& o) { Threads.set(o); }
+void on_threads(const Option& o) { Threads.set(size_t(o)); }

 void on_tb_path(const Option& o) { Tablebases::init(o); }
 
 
 void on_tb_path(const Option& o) { Tablebases::init(o); }
 
 


@@ -56,8 +56,8 @@ bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const
 
 void init(OptionsMap& o) {
 
 
 void init(OptionsMap& o) {
 

-  // at most 2^32 clusters.
-  constexpr int MaxHashMB = Is64Bit ? 131072 : 2048;
+  // At most 2^32 superclusters. Supercluster = 8 kB
+  constexpr int MaxHashMB = Is64Bit ? 33554432 : 2048;

 
   o["Debug Log File"]        << Option("", on_logger);
   o["Contempt"]              << Option(24, -100, 100);
 
   o["Debug Log File"]        << Option("", on_logger);
   o["Contempt"]              << Option(24, -100, 100);