[mpiwg-sessions] will be on a plane today - and some observations

[HOLMES Daniel]

Hi Howard,

Thanks for the update. Sounds promising.

I'm trying to fix the test3.zip example from:
https://github.com/open-mpi/ompi/issues/3458#issuecomment-322951227

If successful, this would extend the testing opportunities for the sandbox code to situations that involve more than one mpirun. The issue is definitely some sort of deadlock in PMIx but I’ve not figured it out completely yet.

I’m cancelling the meeting today, unless anyone objects in the next 50 minutes.

Cheers,
Dan.
—
Dr Daniel Holmes PhD
Applications Consultant in HPC Research
d.holmes at epcc.ed.ac.uk<mailto:d.holmes at epcc.ed.ac.uk>
Phone: +44 (0) 131 651 3465
Mobile: +44 (0) 7940 524 088
Address: Room 3415, JCMB, The King’s Buildings, Edinburgh, EH9 3FD
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The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
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On 20 Aug 2018, at 15:55, Pritchard Jr., Howard <howardp at lanl.gov<mailto:howardp at lanl.gov>> wrote:

HI Folks,

I’ll be on a plane at 11 AM MDT today so will not be able to call in.

I tried running the tests Dan had added/modified  and observed
what he did, that one can’t allow more than one outstanding
accept/connect going on at a time or Open MPI’s ORTE gets confused.
I reduced this down to a simpler test which hangs with only 3 ranks
and am narrowing down what the issue is.

I’ll be opening a PR with changes to chapter 8 of the standard and
replacement for MPI_Get_Set_Names later this week.

Howard

--
Howard Pritchard
B Schedule
HPC-ENV
Office 9, 2nd floor Research Park
TA-03, Building 4200, Room 203
Los Alamos National Laboratory

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