> On Apr 5, 2018, at 11:32 AM, Edgar Gabriel <egabr...@central.uh.edu> wrote:
>
> is the file I/O that you mentioned using MPI I/O for that? If yes, what file
> system are you writing to?
No MPI I/O. Just MPI calls to gather the data, and plain Fortran I/O on the
head node only.
I should also say that in lots of other circumstances (different node numbers,
computational systems, etc) it works fine. But the hang is completely
repeatable for this particular set of parameters (MPI and physical simulation).
I haven’t explored to see what variations do/don’t lead to this kind of
hanging.
Noam
____________
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|U.S. NAVAL|
|_RESEARCH_|
LABORATORY
Noam Bernstein, Ph.D.
Center for Materials Physics and Technology
U.S. Naval Research Laboratory
T +1 202 404 8628 F +1 202 404 7546
https://www.nrl.navy.mil <https://www.nrl.navy.mil/>
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