Craig,
On Aug 25, 2009, at 19:09 , Craig Tierney wrote:
As far as using threading, I doubt that threading is going to buy you
much for WRF. Minimal testing showed no benefit and it is more likely
to cause confusion to the users than a small bump in speed. We
would like
to test it more in the future, but right now the users need cycles.
This is consistent with my findings in "An Evaluation of Intel’s Core
i7 Architecture using a Comparative Approach". WRF, as embodied into
the SPEC MPI2007 suite, ran 2% slower using threading on a single-
node, dual-core Nehalem system. Out of the 13 apps constituting the
suite, three ran slower (2,3, and 4%), five ran +10% faster, with
122.tachyon excelling at a 35% speedup from threading.
Thanks, Håkon
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