DDR ram & thrashing L1/L2 cache

[Brian Haymore]

Velocet wrote:
> 
> Anyone played with boards that support DDR ram @ 266Mhz with Gaussian98 or
> other computational software that thrashes the cache?
> 
> Im finding that the increased bus speeds on any of the boards and CPUs
> I've been testing with g98 is the biggest speedup over any other factor.
> (cache size on board, cache speed, etc).
> 
> I am wondering if anyone has comparisons for the same CPUs with the same
> amount of ram on DDR and non DDR boards+memory for jobs that thrash cache.
> 
> Thanks.
> 
> /kc
> --
> Ken Chase, math at velocet.ca * Velocet Communications Inc.  * Toronto, CANADA
> 
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I will have these results from a 1.2Ghz Athlon with a 266Mhz FSB and
PC2100 memory in a few days.  I'll post my results to the list then.


-- 
Brian D. Haymore
University of Utah
Center for High Performance Computing
155 South 1452 East RM 405
Salt Lake City, Ut 84112-0190

Email: brian at chpc.utah.edu - Phone: (801) 585-1755 - Fax: (801) 585-5366