Increase MaterialTableSize 8 times

Now that we prefetch in material hash table we
can increase its size and gain something.

Hit rate is now of 98% from 92%

Speedup of 0.8%

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/material.cpp b/src/material.cpp
index f5e4a3b92cd4740e29ef9db850f93e43bfcef4f4..31550720c05a48de8c0f764dd56860a9d4afc501 100644 (file)
--- a/src/material.cpp
+++ b/src/material.cpp
@@ -32,7 +32,7 @@ namespace {
   const Value EndgameLimit = Value(3998);
 
   // Scale factors used when one side has no more pawns
   const Value EndgameLimit = Value(3998);
 
   // Scale factors used when one side has no more pawns

-  const int NoPawnsSF[4] = { 6, 12, 32 };
+  const uint8_t NoPawnsSF[4] = { 6, 12, 32 };

 
   // Polynomial material balance parameters
   const Value RedundantQueenPenalty = Value(320);
 
   // Polynomial material balance parameters
   const Value RedundantQueenPenalty = Value(320);

diff --git a/src/material.h b/src/material.h
index 1a5f110547ca6dcf8d1a2abc35a2228cc892e62c..08752572e96910dcae4c8dd63782e5b8217a4082 100644 (file)
--- a/src/material.h
+++ b/src/material.h
@@ -25,7 +25,7 @@
 #include "tt.h"
 #include "types.h"
 
 #include "tt.h"
 #include "types.h"
 

-const int MaterialTableSize = 1024;
+const int MaterialTableSize = 8192;

 
 /// MaterialInfo is a class which contains various information about a
 /// material configuration. It contains a material balance evaluation,
 
 /// MaterialInfo is a class which contains various information about a
 /// material configuration. It contains a material balance evaluation,