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Increase TT size limit to 8 GB

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We had an overflow due to use an integer for hash size,
now we use a size_t as we should, so we can increase to
an higher limit.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-02-01 16:53:10 +01:00
parent 8008f78415
commit 4b55d3d883
3 changed files with 5 additions and 7 deletions
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6
src/tt.cpp
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@ -53,11 +53,9 @@ TranspositionTable::~TranspositionTable() {
/// TranspositionTable::set_size sets the size of the transposition table, /// TranspositionTable::set_size sets the size of the transposition table,
/// measured in megabytes. /// measured in megabytes.
void TranspositionTable::set_size(unsigned mbSize) { void TranspositionTable::set_size(size_t mbSize) {
assert(mbSize >= 4 && mbSize <= 2048); size_t newSize = 1024;
unsigned newSize = 1024;
// We store a cluster of ClusterSize number of TTEntry for each position // We store a cluster of ClusterSize number of TTEntry for each position
// and newSize is the maximum number of storable positions. // and newSize is the maximum number of storable positions.

4
src/tt.h
View file

@ -95,7 +95,7 @@ class TranspositionTable {
public: public:
TranspositionTable(); TranspositionTable();
~TranspositionTable(); ~TranspositionTable();
void set_size(unsigned mbSize); void set_size(size_t mbSize);
void clear(); void clear();
void store(const Key posKey, Value v, ValueType type, Depth d, Move m); void store(const Key posKey, Value v, ValueType type, Depth d, Move m);
TTEntry* retrieve(const Key posKey) const; TTEntry* retrieve(const Key posKey) const;
@ -114,7 +114,7 @@ private:
unsigned writes; // heavy SMP read/write access here unsigned writes; // heavy SMP read/write access here
unsigned char pad_after[64]; unsigned char pad_after[64];
unsigned size; size_t size;
TTCluster* entries; TTCluster* entries;
uint8_t generation; uint8_t generation;
}; };

2
src/ucioption.cpp
View file

@ -121,7 +121,7 @@ namespace {
o["Minimum Split Depth"] = Option(4, 4, 7); o["Minimum Split Depth"] = Option(4, 4, 7);
o["Maximum Number of Threads per Split Point"] = Option(5, 4, 8); o["Maximum Number of Threads per Split Point"] = Option(5, 4, 8);
o["Threads"] = Option(1, 1, THREAD_MAX); o["Threads"] = Option(1, 1, THREAD_MAX);
o["Hash"] = Option(32, 4, 2048); o["Hash"] = Option(32, 4, 8192);
o["Clear Hash"] = Option(false, BUTTON); o["Clear Hash"] = Option(false, BUTTON);
o["New Game"] = Option(false, BUTTON); o["New Game"] = Option(false, BUTTON);
o["Ponder"] = Option(true); o["Ponder"] = Option(true);