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Subject: Re: [OMPI users] Problems with gridengine integration on RHEL 6
From: Dave Love (d.love_at_[hidden])
Date: 2012-02-15 18:41:30

Brian McNally <bmcnally_at_[hidden]> writes:

> Hello Open MPI community,
> I'm running the openmpi 1.5.3 package as provided by Redhat Enterprise
> Linux 6, along with SGE 6.2u3. I've discovered that under RHEL 5 orted
> gets spawned via qrsh and under RHEL 6 orted gets spanwed via
> SSH. This is happening in the same cluster environment with the same
> parallel environment setup. I want orted to get spawned via qrsh
> because we impose memory limits if a job is spawned through SSH.

[I'd have thought you'd want qrsh to get tight integration regardless.]

> I cannot determine WHY the behavior is different from RHEL 5 to RHEL
> 6. In the former I'm using the openmpi 1.4.3 package, in the latter
> I'm using openmpi 1.5.3. Both are supposedly built to support the
> gridengine ras.

See the release notes for 1.5.4. The workaround I was given is
  plm = ^rshd

Does "the same parallel environment setup" mean mixing 1.4 and 1.5? I
thought they weren't binary compatible.