[Openmcl-devel] Quick HW question...
tfb at tfeb.org
Tue Nov 16 11:10:53 CST 2010
On 16 Nov 2010, at 15:16, Jon Anthony wrote:
> This is some good information. Thanks for the pointers. But it also
> highlights an issue I've thought about from time to time: with modern
> processor architectures (especially pipelines, caches, and now cores)
> how does one _not_ write naive code for these things? Sure, 90+% of the
> worry on this goes to the compiler writers, but it can be easy to
> accidentally write something that defeats their efforts.
The best answer I know is to profile mercilessly where performance matters.
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