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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