From 4b55d3d8831a7cc70d8f4790111fb13b1863bc7b Mon Sep 17 00:00:00 2001 From: Marco Costalba Date: Mon, 1 Feb 2010 16:53:10 +0100 Subject: [PATCH] Increase TT size limit to 8 GB 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 --- src/tt.cpp | 6 ++---- src/tt.h | 4 ++-- src/ucioption.cpp | 2 +- 3 files changed, 5 insertions(+), 7 deletions(-) diff --git a/src/tt.cpp b/src/tt.cpp index 1b2ae720..010bdc95 100644 --- a/src/tt.cpp +++ b/src/tt.cpp @@ -53,11 +53,9 @@ TranspositionTable::~TranspositionTable() { /// TranspositionTable::set_size sets the size of the transposition table, /// measured in megabytes. -void TranspositionTable::set_size(unsigned mbSize) { +void TranspositionTable::set_size(size_t mbSize) { - assert(mbSize >= 4 && mbSize <= 2048); - - unsigned newSize = 1024; + size_t newSize = 1024; // We store a cluster of ClusterSize number of TTEntry for each position // and newSize is the maximum number of storable positions. diff --git a/src/tt.h b/src/tt.h index 5d0df726..2b2ce606 100644 --- a/src/tt.h +++ b/src/tt.h @@ -95,7 +95,7 @@ class TranspositionTable { public: TranspositionTable(); ~TranspositionTable(); - void set_size(unsigned mbSize); + void set_size(size_t mbSize); void clear(); void store(const Key posKey, Value v, ValueType type, Depth d, Move m); TTEntry* retrieve(const Key posKey) const; @@ -114,7 +114,7 @@ private: unsigned writes; // heavy SMP read/write access here unsigned char pad_after[64]; - unsigned size; + size_t size; TTCluster* entries; uint8_t generation; }; diff --git a/src/ucioption.cpp b/src/ucioption.cpp index fe984575..e118d45b 100644 --- a/src/ucioption.cpp +++ b/src/ucioption.cpp @@ -121,7 +121,7 @@ namespace { o["Minimum Split Depth"] = Option(4, 4, 7); o["Maximum Number of Threads per Split Point"] = Option(5, 4, 8); 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["New Game"] = Option(false, BUTTON); o["Ponder"] = Option(true); -- 2.39.2