Ionut, On Fri, Oct 24, 2003 at 06:26:55PM +0200, Ionut Georgescu wrote: > Yes, it is a 1.5MB cache CPU. > > But it might be more than just cache misses. When running with a 256x256 > grid, I am actually using 3 256x257 matrices, which is slightly over > 1.5MB. I just made a comparison with a 32x32 grid and the difference is > the same: alpha 10.294s, zx2000 14.777s . -O3 is only by 0.4s faster > than -O2 in this case. > Another thing to check is the syslog. Check to see if your program is not getting "floating point software assist" fault. That can slow you down significantly. -- -Stephane - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.htmlReceived on Fri Oct 24 13:16:08 2003
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