[Beowulf] MPI Processes + Auto Vectorization

[Greg Lindahl]

On Tue, Dec 01, 2009 at 01:14:13AM -0500, amjad ali wrote:

> My question is that if we do not have free cpu cores in a PC or cluster (all
> cores are running MPI processes), still the auto-vertorization is
> beneficial? Or it is beneficial only if we have some free cpu cores locally?

Perhaps you're confusing auto-parallelization and auto-vectorization?

Auto-vectorization does not use any more cpu cores than unvectorized code.

-- greg