Greg Lindahl wrote:
On Sun, Nov 05, 2006 at 06:38:25PM -0500, Joe Landman wrote:
Since they wish to do it only for Intel processors, and the world
is decidedly mixed, this has implications on the use of Intel compilers
for lots of people wishing to get the best performance on all platforms
with a single compiler tool. Doesn't it.
Some codes are also outliers, for example Fluent on Woodcrest does
great, if I remember correctly.
The Fluent benchmarks need to be explained. There are basically
9 benchmarks (small, medium, and large models). On the small
and medium models the Woodcrest kicks butt on a single node
(1-4 cores) mostly due to the cache size. On some of the large
models, the Woodcrest does very well on a single node (1-4 CPUs).
But on some of the large models, the Opteron does very well.
The small and medium models are really pretty small so when
I look at more than 1 node, I look at the large models. At a
certain point, the slower Opterons become faster than Woodcrest
(both IB).
I also know one CFD app that is faster on Opteron even for one
node (1-4 CPUs).
Jeff
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