[Developers] Add OpenMP statistics to PUGH
knarf at cct.lsu.edu
Fri Oct 23 09:43:04 CDT 2009
On Fri, Oct 23, 2009 at 07:39:56AM -0700, John Shalf wrote:
> it is a very bad thing of processes migrate due to NUMA effects.
> Data gets pinned to the memory controller that is closest to the
> processor that first touched it. Things get very inefficient if the
> process migrates to a distant processor.
Yes, but you do not always have different memory controllers attached to
> You might also take a look at JumpShot (inside of MPE) to see how
> they do their instrumentation.
> It works on BlueGene as well, and profiles any OpenMP implementation
> that is built on top of pthreads (as most of them are).
thanks for the that pointer.
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