[HTCondor-users] How to prefer certain nodes for jobs

[Sean Crosby <scrosby@xxxxxxxxxxxxxx>]

We are looking at making certain jobs prefer certain worker nodes based on attributes in the job - specifically who submitted the job

All nodes can run the jobs, but we'd like it if AcctGroup 'A' goes to node group 'A' first, and AcctGroup 'B' goes to node group 'B'

We have tried setting both the RANK andÂNEGOTIATOR_POST_JOB_RANK to something like this

Worker node group A:

NEGOTIATOR_POST_JOB_RANK = 1000000 * (TARGET.AcctGroup == 'group_atlas')

Worker node group B:

NEGOTIATOR_POST_JOB_RANK = 1000000 * (TARGET.AcctGroup == 'tier3')

Job classads:

$ condor_q -long 1090

AcctGroup = "tier3"

$ condor_q -long 32

AcctGroup = "group_atlas"

For some reason, all the jobs are being scheduled on the group B nodes first.

Is there any reason why the post job rank wouldn't work, or is there some other knob to tune? I've set the RANK and NEGOTIATOR_PRE_JOB_RANK to the same value on both groups of nodes.

Sean

--

Sean Crosby
Research Computing
ARC Centre of Excellence for Particle Physics at the Terascale
School of Physics | University of Melbourne VIC 3010 Australia