Author: Gordon Rattray
Date: 07:26:40 11/20/01
If a dual machine is used to run two different chess programs (non-SMP), each using a single processor to itself, will this be equivalent to having two separate single processor PCs (assuming the processors were the same)? Or does the use of a shared memory affect the performance? single bus?! I'm also assuming that the dual machine would have the combined memory capacity of the two single PCs, so hash table sizes would be the same. For the dual, what if both programs were accessing endgame table bases from the same disc? Both programs analyising the same position, so maybe cache hits?! Different positions would cause more disk access?! Can anyone give an opinion on the efficiency of crafy/fritz/junior/shredder (SMP versions) when running on a dual? Is 80% a fair estimate? Can it vary significantly depending on position? thanks in advance for any answers Gordon
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