Unicore - Nodes allocation

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Ticketing system for developers/testers and power users of the Brain Simulation Platform of the Human Brain Project

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Unicore - Nodes allocation #535

Closed antonelepfl closed 4 years ago

antonelepfl commented 4 years ago

Hi @BerndSchuller,

We would like to know if the jobs that Unicore allocate are in exclusive nodes or a node can be shared with multiple users. I did not find this on the documentation

BerndSchuller commented 4 years ago

UNICORE delegates to Slurm - what UNICORE does is create a file (named "bsssubmit...") and invoke "sbatch bsssubmit...".

Usually, nodes are not shared.

antonelepfl commented 4 years ago

Is there any way to confirm that the Nodes are not shared? It would be possible to add and extra param on Unicore so we can add the --exclusive flag to the bss_..

BerndSchuller commented 4 years ago

on which system is this?

in principle it's possible to either add a flag or to hard code it in the TSI, but I'm pretty sure that on HPC systems compute nodes are not shared.

antonelepfl commented 4 years ago

It is in Piz-Daint (CSCS) Ok I just wanted some more information due I'm not an expert on this

BerndSchuller commented 4 years ago