[petsc-users] [petsc-maint #78983] Re: MPI v. Pthreads ?

[Jed Brown]

On Sun, Jul 10, 2011 at 12:45, John Chludzinski <jchludzinski at gmail.com>wrote:

> You mentioned: "pthread based Vec and Mat class that lives inside the PETSc
> MPI world".  Is this pthreads *in lieu of* MPI or is it pthreads *in
> addition to* MPI?
>

The latter. Pthreads within a NUMA node or shared memory node, MPI between
nodes.
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