Author: Eugene Nalimov
Date: 20:41:11 06/15/03
Go up one level in this thread
On June 14, 2003 at 01:48:07, Brian Richardson wrote: >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)? Visual C, of course :-) And your Itanium numbers are much slower than mine, even when I am using publicly available 64-bit Visual C, not the latest and greatest we have here... Thanks, Eugene >>>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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