Author: Scott Gasch
Date: 14:56:30 01/05/03
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On January 05, 2003 at 17:07:41, Bruce Moreland wrote: >How much stronger would your program be if move generation and make/unmake took >zero cycles? > >My program spends 43% of its time on this. That is move generation, >make/unmake, static exchange, and check detection. This is based on the latest profile run I have. The percentages are for that routine alone, not including functions it calls. I got this info by running down the top ~30 CPU time hungry routines in monsoon, tossing things related to search and eval, and sorting the rest into three categories: SEE, Generator and Datastruct update. SEE routines: GetAttacks [hand written asm] 11.1% SEE 4.9% SortSEEList 1.8% ClearPieceByLocation 0.5% TOTAL SEE_________________________ 18.3% Generator routines: AddMove 7.1% GeneratePieceChecksAndCaptures0x88 6.6% Generate 2.7% WouldGiveCheck 2.7% ExposesCheck 1.4% GeneratePieceCaptures 2.3% GenerateEscapes 1.7% GeneratePawnCaptures 1.1% GenerateNonCapturePromotions 0.6% GeneratePieceMoves 0.5% GeneratePawnMoves 0.1% GeneratePieceMovesAndCaptures 0.1% TOTAL GEN_________________________ 26.9% Datastructure update routines: MakeMove 2.9% UnmakeMove 2.6% LiftPiece 0.5% PlacePiece 0.2% SlidePiece 0.0% TOTAL DATASTRUCT UPDATE____________ 6.2% GRAND TOTAL: 51.4% Scott
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