[slurm-users] Memory oversubscription and sheduling

Chris Samuel chris at csamuel.org
Sat May 5 07:21:14 MDT 2018

On Thursday, 26 April 2018 3:28:19 AM AEST Cory Holcomb wrote:

> It appears that I have a configuration that only takes into account the
> allocated memory before dispatching.

With batch systems the idea is for the users to set constraints for their jobs 
so the scheduler can backfill other jobs onto nodes knowing how much memory 
they can rely on.

So really the emphasis is on making the users set good resource requests (such 
as memory) and for the batch system to terminate jobs that exceed them (or to 
arrange for the kernel to constrain them to that amount via cgroups).

Hope that helps!
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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