[slurm-users] constraints question

[Chris Samuel]

On Tuesday, 6 November 2018 11:06:43 PM AEDT Tina Friedrich wrote:

> So what am I doing wrong with the 'or'?

I don't have node features defined (other than for KNL nodes), so I can't test 
your scenario, but I do see similar as I get the error:

$ srun -C "broadwell|haswell" --pty /bin/bash
srun: error: Unable to allocate resources: Invalid KNL configuration (MCDRAM 
or NUMA option)

but when using and I get:

$ srun -C "broadwell&haswell" --pty /bin/bash 
srun: error: Unable to allocate resources: Invalid feature specification

Just a rough guess as I don't have time to try and trace the code, but the 
ESLURM_INVALID_KNL error only occurs in the KNL plugin, whereas 
ESLURM_INVALID_FEATURE occurs in slurmctld code so I'm wondering if the main 
code tries to satisfy the constraints and (for me) fails, and so drops through 
to the KNL plugin to check that and that gets the last say on what the Slurm 
error number could be.

That would imply that for some reason your node features aren't getting 
properly processed, either by the presence of the KNL plugin or for some other 
reason.   It would be worth trying to disable the KNL plugin and see what 
effect that has.

Best of luck!
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC