Author: Djordje Vidanovic
Date: 10:19:32 05/12/04
Go up one level in this thread
>>I assume you have a quad and not a dual xeon with hyperthreading? Don't use >>hyperthreading with crafty, as the recent NUMA changes make it more efficient to >>not use hyperthreading... > > >Bob, you might be interested to find out what the SMP speedup on my Dual Xeon >is. The single CPU Crafty 19.13 (P. Skinner) gets 988,403 kns on a single Xeon >2.4. The dual CPU Crafty 19.13 goes up to 1880052 kns. The speedup, rounded >off to "only" six decimal places, is 1.858249. More raw data for you :-) HT off this time. Yes, Crafty was a bit faster with HT off: 2 CPU -- 1893067 kns; 35 sec 1 CPU -- 988403 kns; 67 sec Speedup (no HT) ===> 1.871113
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