On Tue, Aug 15, 2006 at 05:02:40AM -0400, Steffen Persvold wrote: > Not if you're using a "non-polluting" store (like movntps), but I don't know > if compilers are smart enough (they should be?).
We generate non-polluting stores at -O3 and higher when we see a loop blowing out the cache. I don't think PGI ever does unless you flip a special switch (which might reduce performance for programs which have a combination of cache-friendly and not-cache-friendly behavior). And I don't recall what the Intel compiler does. -- greg _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
