This web mail archive is frozen.
This page is part of a frozen web archive of this mailing list.
You can still navigate around this archive, but know that no new mails
have been added to it since July of 2016.
Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.
Is there a limit on how many MPI processes can run on a single host?
I have a user trying to test his code on the command-line on a single
host before running it on our cluster like so:
mpirun -np X foo
When he tries to run it on large number of process (X = 256, 512), the
program fails, and I can reproduce this with a simple "Hello, World"
$ mpirun -np 256 mpihello
mpirun noticed that job rank 0 with PID 0 on node juno.sns.ias.edu
exited on signal 15 (Terminated).
252 additional processes aborted (not shown)
I've done some testing and found that X <155 for this program to work.
Is this a bug, part of the standard, or design/implementation decision?
Linux Software Support Specialist/System Administrator
School of Natural Sciences
Institute for Advanced Study