Re: Itanium2@900MHz slower than alpha@666MHz ?

From: Stephane Eranian <>
Date: 2003-10-25 03:10:44

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.

To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to
More majordomo info at
Received on Fri Oct 24 13:16:08 2003

This archive was generated by hypermail 2.1.8 : 2005-08-02 09:20:19 EST