Author: Drexel,Michael
Date: 11:28:03 04/09/03
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On April 09, 2003 at 11:52:48, Charles Worthington wrote: >I ran the Deepfritzmark and Shreddermark tests with hyperthreading disabled then >enabled with some very confusing results that I am hoping someone can help >explain: > >Test set #1 Hyperthreading Disabled, 64MB Hash, Engine Parameters @ default > >Shredder 7.04: Shreddermark: 2227 +- 0 (1.5s) 705kN/s > >Deep Fritz 7 : Deepfritzmark: 2724 +- 44 (3.1s) 2252kN/s > > > > >Test set #2 Hyperthreading Enabled, 64MB Hash, Engine Parameters @ Default > >Shredder 7.04: Shreddermark: 2227 +- 0 (1.5s) 803kN/s > >Deep Fritz 7 : Deepfritzmark: 2476 +- 0 (3.2s) 2555kN/s > > > >Test set #3: Hyperthreading Enabled, 32 MB Hash, Engine Parameters @ Default > >Shredder 7.04: Shreddermark: 2784 +- 0 (0.4s) 907kN/s > >Deep Fritz 7: Deepfritzmark: 2476 +- 0 (3.4s) 2532kN/s > > > >Test set #4; Hyperthreading enabled, 16MB Hash, engine parameters @ default > >Shredder 7.04; Shreddermark: 2784 +- 0 (0.4s) 1008kN/s > >Deep fritz 7: Deepfritzmark: 2476 +- 0 (4.5s) 2544 kN/s > > > >This is somewhat confusing as Fritz scored the highest fritzmark with >hyperthreading_disabled_ even though his kN/s were_far_lower. Shredder scored >far better with it_enabled_ both in result, speed, and time to solution. >Also Shredder seemed to benefit more from the smaller hash sizes where Fritz >seemed relatively worsened by them. Does anyone have any insight as to these >seemingly contradictory results? And would I be better to run Deep Fritz with >the hyperthreading diasabled even though his kN/s is considerably lower? > >Charles Im not surprised. You can get a lower Fritzmark although your Computer is faster and has higher kN/s values. The Fritzmark is not linear. This seems to be complete Nonsense. In addition they changed the Fritzmark ratings arbitrarily with the release of Fritz 7 because the kN/s were smaller in the new versions of Fritz. You should use the Crafty Benchmark because the results are far more reliable. A Crafty Benchmark is for example used in the famous SPEC CPU 2000 benchmark. http://www.specbench.org/osg/cpu2000/CINT2000/ This seems to be the only important Testposition for Fritzmark: [D]1r5r/3b1pk1/p2p1np1/p1qPp3/2N1PbP1/2P2PN1/1PB1Q1K1/R3R3 b - - 0 1 The time it takes till the engine reaches the end of ply 10 is measured. When you start the Test three positions are evaluated up to ply 6: [D] 1q2r3/2p1bpkp/5np1/8/5B1P/5QNK/3P1PP1/R7 w - - 0 1 [D] r1b2rk1/1p2bppp/p4n2/4B3/1qBR4/2N5/P3QPPP/R5K1 w - - 0 1 [D] r4rk1/5p2/p1b1pQpq/8/1B2P3/2NR4/PPP3PP/1K6 w - - 0 1 Michael
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