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Subject: Re: [OMPI users] How are the Open MPI processes spawned?
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-11-28 19:39:25


On Nov 28, 2011, at 5:32 PM, Jeff Squyres wrote:

> On Nov 28, 2011, at 6:56 PM, Ralph Castain wrote:
> Right-o. Knew there was something I forgot...
>
>> So on rsh, we do not put envar mca params onto the orted cmd line. This has been noted repeatedly on the user and devel lists, so it really has always been the case.
>
> So they're sent as part of the launch command (i.e., out of band -- not on the rsh/ssh command line), right?

Yes

>
> Meaning that per my output from above, what Paul was trying should have worked, no? I.e., setenv'ing OMPI_<whatever>, and those env vars should magically show up in the launched process.

In the -launched process- yes. However, his problem was that they do not show up for the -orteds-, and thus the orteds don't wireup correctly.