[mpich-discuss] Help Mpich2

Ricardo Román Brenes roman.ricardo at gmail.com
Mon Jul 9 20:22:51 CDT 2012

according to my reserches, it all depends on your network and processor
type. If u got a fast network, really fast not 1GB ethernet... you can
"sacrifice" the transfer time. If you got a processor with hyperthreading
its possible that ur threads run faster

On Mon, Jul 9, 2012 at 6:37 PM, Pavan Balaji <balaji at mcs.anl.gov> wrote:

> On 05/26/2012 06:43 PM, angelo pascualetti wrote:
>> How many processes (-np) should tell mpich to be faster than openmp?
> There's no way we can answer this question.  Depending on the application,
> either MPI-only or MPI+OpenMP can be faster.  MPICH supports both models,
> so you can experiment with them.
>  -- Pavan
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
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