Author: Brian Richardson
Date: 22:48:07 06/13/03
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On June 13, 2003 at 22:44:57, Vincent Diepeveen wrote: >On June 13, 2003 at 19:28:34, Brian Richardson wrote: > >Hello your opteron performance is not correct. > >If you native compile 64 bits with GCC at the opteron crafty with branch >optimizations (that means you compile 1 time with profile option then run it for >a number of minutes then recompile, gives big extra speed) and then run dual you >should get about 4 million nodes a second. And not a node less than that. > >Even at specint the 64 bits gcc compiled version is about 60% faster than bob's >own machine has. specint is not using even inline assembly nor profile >reinforced code (which matters really a lot at the opteron and near to zero at >the itanium2 becuase it's a buggy predication processor). > >Best regards, >Vincent > I forgot to mention that this was under Windows 2003. I have not found a native code Opteron compiler yet. Does anyone have suggestions? (besides running Linux)? >>Note the time differences between versions, and the relative SMP scaling. >> >> Version CPUs Total SMP Raw nodes >> elapsed time-to-ply per second >> time >>Opteron 244 (1.7GHz) 19.03 2 28 22.857143 1976833 >>Opteron 244 (1.7GHz) 19.03 1 43 14.883721 1234812 >>AMD 1900+ (1.6GHz) 19.03 2 39 16.410256 1408076 >>AMD 1900+ (1.6GHz) 19.03 1 56 11.428571 948159 >>Opteron 244 (1.7GHz) 18.15 2 48 13.333333 1807684 >>Opteron 244 (1.7GHz) 18.15 1 77 8.311688 1097373 >>AMD 1900+ (1.6GHz) 18.15 2 71 9.014085 1278866 >>AMD 1900+ (1.6GHz) 18.15 1 104 6.153846 812478 >>Itanium2 1GHz 18.15 2 112 5.714286 959705 >>Itanium2 1GHz 18.15 1 186 3.44086 524126 >> >>Note all runs with: >>hash table memory = 384M bytes. >>pawn hash table memory = 24M bytes. >>EGTB cache memory = 1M bytes.
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