[petsc-users] Pthread support

Jed Brown jedbrown at mcs.anl.gov
Mon Jul 23 22:20:28 CDT 2012


On Mon, Jul 23, 2012 at 10:18 PM, Alexander Goncharov <alexvg77 at gmail.com>wrote:

> I do not use MPI. I am just launching two instances of ex2 manually.


This is an essential detail. You need to set them to have different
affinity.

We can't know about the affinity of other random processes on your machine.
mpiexec provides a way to prevent MPI processes from conflicting. We do our
best to prevent our own threads from conflicting. But after that, you're on
your own.
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