Author: David Rasmussen
Date: 12:54:41 01/02/02
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On January 02, 2002 at 15:40:08, Dann Corbit wrote: >On January 02, 2002 at 15:34:55, David Rasmussen wrote: > >>I've tried running Crafty at my universitys multiprocessor machines, with poor >>results. Using 4 processors was kind of ok, but not great (~750 knps), but using >>many more processors (16, 24, etc.) just made it slower. How crummy is that. > >Did you do the compile with 96 processors enabled? It won't do that by default. >I am pretty sure you need to change the define for CPUs like this: >#define CPUS=96 > >Look at this in chess.h: > >#if !defined(CPUS) ># define CPUS 1 >#endif > >I am guessing you will see (96/4) * 0.7 * 750K = ~12M NPS or so. I changed -DCPUS=4 to -DCPUS=16 in Makefile and put mt=16 in .craftyrc /David
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