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Re: [gnugo-devel] Parallelizing GNU Go

From: Dave Denholm
Subject: Re: [gnugo-devel] Parallelizing GNU Go
Date: 04 Apr 2003 10:44:47 +0100

Paul Pogonyshev <address@hidden> writes:

> Dave Denholm wrote:

> > Depending on what happens with hyper-threading...
> > Also depends on whether gnugo is cpmpute bound or memory bound.
> i believe it's mostly memory-bound, but who knows :) hyper-threading might
> become a good reason for going threaded but it is not at the moment certainly.

Hmm - if it really is memory bound, then running two threads might
be *slower* than one thread on a multi-cpu machine : memory
thrashing may dominate.

ie if there is not enough memory bandwidth to satisfy one cpu, then
making two cpus fight over the same bus is doomed !


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