[yt-users] TimeSeriesData.piter() exiting early

[John Wise]

Hi Nathan,

I've run into a problem like this before on pleiades.  I've solved it by 
manually calling MPI.Finalize() at the end of the script.

from mpi4py import MPI
[...script...]
MPI.Finalize()

This will allow all of the processors to finish before exiting the 
script.  If you don't call MPI_Finalize, then it will exit once 
processor 0 exits.  I've only seen this behavior with SGI's MPI.

John


On 12/06/2012 03:37 PM, Nathan Goldbaum wrote:
> Hi all,
>
> I'm processing some simulations that i have stored on Pleiades at NASA Ames.  This machine using SGI's version of MPI so it's possible that this issue is isolated to this MPI.
>
> When I ts.piter() on this machine, it will sometimes die early, before all of the parameter files have been processed, with the following error:
>
> MPI: MPI_COMM_WORLD rank 7 has terminated without calling MPI_Finalize()
> MPI: aborting job
>
> This particular script saves a bunch of plots to disk.  Taking a look at the list of plots that have been saved, it seems that it got about halfway through before dying.  The first ~third of the plots are all on disk, most of the middle ~third are saved although there are some missing plots, and the last ~third haven't been saved at all.
>
> Any ideas what's going wrong here?  Is there something simple I can do to fix it?  This isn't game-ending since I can always process my data in serial but it is a bit annoying.
>
> Cheers,
>
> Nathan
>
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-- 
John Wise
Assistant Professor of Physics
Center for Relativistic Astrophysics, Georgia Tech