Author: Dann Corbit
Date: 12:40:08 01/02/02
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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.
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