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Subject: Re: [OMPI users] OpenMPI and SGE
From: Ray Muno (muno_at_[hidden])
Date: 2009-06-23 13:26:48


Rolf Vandevaart wrote:
> Ray Muno wrote:
>> Ray Muno wrote:
>>
>>> We are running a cluster using Rocks 5.0 and OpenMPI 1.2 (primarily).
>>> Scheduling is done through SGE. MPI communication is over InfiniBand.
>>>
>>>
>>
>> We also have OpenMPI 1.3 installed and receive similar errors.-
>>
>>
> This does sound like a problem with SGE. By default, we use qrsh to
> start the jobs on all the remote nodes. I believe that is the command
> that is failing. There are two things you can try to get more info
> depending on the version of Open MPI. With version 1.2, you can try
> this to get more information.
>
> |--mca pls_gridengine_verbose 1|
>
This did not look like it gave me any more info.

> With Open MPI 1.3.2 and later the verbose flag will not help. But
> instead, you can disable the use of qrsh and instead use rsh/ssh to
> start the remote jobs.
>
> --mca plm_rsh_disable_qrsh 1
>

Tha give me

PMGR_COLLECTIVE ERROR: unitialized MPI task: Missing required
environment variable: MPIRUN_RANK
PMGR_COLLECTIVE ERROR: PMGR_COLLECTIVE ERROR: unitialized MPI task:
Missing required environment variable: MPIRUN_RANK

-- 
 Ray Muno
 University of Minnesota