[MITgcm-support] MPI on SGI

[Nikki Lovenduski]

Hi All,

Thanks for your help.  I figured out the problem -- I was using the wrong
/usr/local/bin/mpiexec at run time.  Everything is running now!

Regards,
Nikki

On Jun 10, 2011, at 2:53 PM, Nikki Lovenduski wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'm trying to run the sector model version of MITgcm on an SGI Altix
>>>> HPCC.  The model runs fine on 1 processor.  However, I am having
>>>> trouble running on 16 processors:  The compilation works fine (I add
>>>> -mpi to my genmake2 command and specify nPx = 2 and nPy = 8 in
>>>> SIZE.h), but I get an error at execution in the routine INI_PROCS.
>>>>
>>>> *** ERROR *** S/R INI_PROCS: No. of processes not equal to
>>>> nPx*nPy    1   16
>>>>
>>>> This error message indicates that MPI only assigns 1 processor to my
>>>> run; whereas, it should be running on nPx*nPy=16 processors.
>>>>
>>>> My job submission script specifies the correct number of processors
>>>> (-n 16).
>>>>
>>>> Any ideas what I'm doing wrong?
>>>>
>>>> Thanks,
>>>> Nikki
>>>>
>>>> ----------------------
>>>> Nikki Lovenduski
>>>> ATOC/INSTAAR
>>>> Univ. Colorado at Boulder
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