[Beowulf] Memory latency (was woodcrest)

Greg Lindahl greg.lindahl at qlogic.com
Mon Aug 21 03:51:57 EDT 2006


On Thu, Aug 17, 2006 at 02:52:47PM -0700, Bill Broadley wrote:

> I'm happy to say that Pathscale, Intel, GCC-3, and GCC-4 all share
> mostly identical performance.  Although, I had to be very careful with
> pathscale to avoid the benchmark routine from getting optimized away.

*snicker* Believe it or not, that optimization is actually useful in
real programs, which occasionally read or write to arrays without ever
subsequently using the data.

-- greg

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