[Nek5000-users] Issues running on Mira

[nek5000-users at lists.mcs.anl.gov]

I'm currently attempting to run Nek5000 on the Argonne supercomputer (Mira) using 512 nodes, but if using all available cores (16 per node) the code seems to hang after some point. All attempts have been made with a run time of 1 hour. When running on 512 nodes with a single core on each node, the code runs fine. Is it possible that start-up for ~8000 cores takes more than an hour or is there something else that could be causing this issue? Note that we definitely have a sufficient number of elements to run on ~8000 nodes.

Thanks,

Jefferson Davis

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