[petsc-users] Help with mpiexec

[George Mathew]

On Sat, Oct 13, 2012 at 5:09 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sat, Oct 13, 2012 at 4:07 PM, George Mathew <gmnnus at gmail.com> wrote:
>
>> The following command works fine:
>> mpiexec -f machinefile -n 12 hostname
>
>
> Hostname does not communicate at all. Can you run a real MPI program, such
> as cpi.c that is included in most source MPI distributions? The first call
> to MPI_Bcast() is raising an error, which strongly indicates that the MPI
> was misconfigured.
>
>
>>
>> It displays the hostname from the 4 different machines that I have in the
>> machinefile. The MPI installation was done from the same tar file on the 4
>> hosts running identical versions of linux.
>>
>
> Environment variables could still be different, for example.
>

That's it. MPI issue. Thanks.
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