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Subject: Re: [OMPI users] Spawn_multiple with tight integration to SGE grid engine
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-02-01 09:38:21


On Feb 1, 2012, at 3:49 AM, Reuti wrote:

> Am 31.01.2012 um 21:25 schrieb Ralph Castain:
>
>>
>> On Jan 31, 2012, at 12:58 PM, Reuti wrote:
>
> BTW: is there any default for a hostfile for Open MPI - I mean any in my home directory or /etc? When I check `man orte_hosts`, and all possible optiions are unset (like in a singleton run), it will only run local (Job is co-located with mpirun).

Yep - it is <prefix>/etc/openmpi-default-hostfile

>> We probably aren't correctly marking the original singleton on that node, and so the mapper thinks there are still two slots available on the original node.
>
> Okay. There is something to discuss/fix. BTW: if started as singleton I get an error at the end with the program the OP provided:
>
> [pc15381:25502] [[12435,0],1] routed:binomial: Connection to lifeline [[12435,0],0] lost

Okay, I'll take a look at it - but it may take awhile before I can address either issue as other priorities loom.

>
> It's not the case if run by mpiexec.
>
> -- Reuti
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