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Subject: Re: [OMPI users] grpcomm component hier gone...
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-01-03 09:18:07

On Jan 3, 2013, at 3:01 AM, Ake Sandgren <ake.sandgren_at_[hidden]> wrote:

> On Thu, 2013-01-03 at 11:54 +0100, Ake Sandgren wrote:
>> On Thu, 2013-01-03 at 11:15 +0100, Ake Sandgren wrote:
>>> Hi!
>>> The grpcomm component hier seems to have vanished between 1.6.1 and
>>> 1.6.3.
>>> Why?
>>> It seems that the version of slurm we are using (not the latest at the
>>> moment) is using it for startup.

It should be using PMI if you are directly launching processes via srun, and should not be using hier any more.

>> Hmm it seems it is the ess_slurmd_module.c that is using grpcomm=hier.

Yes - that is the *only* scenario (a direct launch of procs via srun) that should use hier

> orte/mca/plm/base/plm_base_rsh_support.c also tries to use the hier
> grpcomm

Something is very wrong if that is true. How was this configured, and how are you starting this job?

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