[Linux-ia64] Itanium gets supercomputing software
kus at free.net
Mon Jul 23 12:44:16 EDT 2012
According to Keith D. Underwood
> You should actually look at those numbers. See here:
> The only way you get graphs like that is when a couple of your
> benchmarks actually fit in cache. Benchmarks running from cache are not
> terribly representative of most real applications.
Sorry, I'm not familiar w/details of cache behaviour of separate
tests from SPECfp2000: are you sure that tests "working sizes"
fit to 3 MB L2 but will not fit (i.e. gives a lot of
cache misses) in 1 MB on Xeon for example ? (I don't say even
about more large L3 cache in Power4 or about 1.75 MB in Alpha 21364
or 1.5 MB (D-cache) in PA-8700).
Zelinsky Institute of Organic Chemistry
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