Author: Tom Kerrigan
Date: 13:09:55 03/23/02
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On March 23, 2002 at 13:38:45, Dan Andersson wrote: >SMT is of little or no consequence to chess programs. It might even slow it >down. You don't think it automatically doubles the amount of functional units on >a given CPU, do you? You're completely missing the point. SMT was invented and implemented because most of a chip's functional units are idle at any given point in time--using them for another thread gives you free performance. I haven't seen any benchmarks yet, but a quad P4 Xeon will appear to software as an 8-way system and while it will probably not be as fast as a full-on 8-way system, it will be much faster than a 4-thread system. -Tom
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