Author: Reinhard Scharnagl
Date: 18:36:16 12/03/05
But that does not mean: the more the better. Experimenting with a cached Perft routine give hints to find optimal Cache sizes for intended thinking periods: Ply 6: 16 MB, 1.3 sec Ply 7: 64 MB, 16.5 sec Ply 8: 512 MB, 227.8 sec Regards, Reinhard. Here are the detailed results: FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 4.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 31.6% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.5 7 3195901860 108329926 319617 33103848 435767 0 883453 29.8 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 8.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 35.7% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.4 7 3195901860 108329926 319617 33103848 435767 0 883453 25.3 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 16.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 30.4% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.3 7 3195901860 108329926 319617 33103848 435767 0 883453 20.6 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 577.5 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 32.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 34.9% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.3 7 3195901860 108329926 319617 33103848 435767 0 883453 17.4 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 357.3 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 64.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 40.9% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.3 7 3195901860 108329926 319617 33103848 435767 0 883453 16.5 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 270.8 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 128.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 45.2% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.3 7 3195901860 108329926 319617 33103848 435767 0 883453 16.6 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 241.7 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 256.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 48.5% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.3 7 3195901860 108329926 319617 33103848 435767 0 883453 17.1 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 234.0 ------------------------------------------------------------------------------ FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +-*--b--c--d--*--f--g--*-+ MS Vis.Studio C++ Vers. 13.10 8 |[r][n][b][q][k][b][n][r]| (Compilation: Dec 4 2005) 7 |[p][p][p][p][p][p][p][p]| 6 | ::: ::: ::: :::| Perft Testseries 5 |::: ::: ::: ::: | (With TT Caching 512.0 MB / 4-fold) 4 | ::: ::: ::: :::| TT Access Success 52.7% 3 |::: ::: ::: ::: | 2 |<P><P><P><P><P><P><P><P>| Smirf Test No.: 00 1 |<R><N><B><Q><K><B><N><R>| =>+-*--b--c--d--*--f--g--*-+ Break Time 25.0 Sec. Ply Nodes all (x) (e.p.) all (+) (#) Prom. Castl. Sec. ------------------------------------------------------------------------------ 1 20 0 0 0 0 0 0 0 2 400 0 0 0 0 0 0 0 3 8902 34 0 12 0 0 0 0 4 197281 1576 0 469 8 0 0 0 5 4865609 82719 258 27351 347 0 0 0.1 6 119060324 2812008 5248 809099 10828 0 0 1.4 7 3195901860 108329926 319617 33103848 435767 0 883453 17.5 8 84998978956 3523740106 7187977 968981593 9852036 0 23605205 227.8 ------------------------------------------------------------------------------
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