[petsc-users] Pthread support

[Jed Brown]

On Mon, Jul 23, 2012 at 10:33 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>    So maybe that is the problem. PETSc is forcing affinity to a hardware
> number core regardless of whether another PETSc program is running and has
> also forced that same core?


Yes. Now what's the right solution? Not set any affinity by default?
Inherit the process affinity and subdivide it among threads? There is
currently a somewhat crude mechanism in -threadcomm_affinities.
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