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List:       npaci-rocks-discussion
Subject:    [Rocks-Discuss]  Rock7/slurm. Changing nodes weight priority.
From:       Christophe Guilbert <cguilbert () picasso ! ucsf ! edu>
Date:       2020-04-24 23:38:42
Message-ID: 3cf8fd90-e692-e0fa-2762-5a898a19811d () picasso ! ucsf ! edu
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Hi,

I am trying to reorder the nodes priority of slurm. I was unsuccessful 
until now.

Here what I did.

rocks report slurmnodes
#### Auto Created ########

NodeName=compute-0-0 NodeAddr=10.1.1.253 CPUs=8 Weight=20487900 
Feature=rack-0,8CPUs
NodeName=compute-0-1 NodeAddr=10.1.1.252 CPUs=8 Weight=20487899 
Feature=rack-0,8CPUs
NodeName=compute-0-2 NodeAddr=10.1.1.254 CPUs=8 Weight=20487898 
Feature=rack-0,8CPUs
NodeName=compute-0-3 NodeAddr=10.1.1.251 CPUs=24 Weight=20503897 
Feature=rack-0,24CPUs
NodeName=compute-0-4 NodeAddr=10.1.1.250 CPUs=8 Weight=20487896 
Feature=rack-0,8CPUs


I tried to change the weight so the fastest nodes start first by doing 
the following:

rocks add appliance attr compute-0-2 slurm_weight value='20487896'
rocks add appliance attr compute-0-4 slurm_weight value='20503897'
rocks add appliance attr compute-0-1 slurm_weight value='20487898'
rocks add appliance attr compute-0-0 slurm_weight value='20487899'
rocks add appliance attr compute-0-3 slurm_weight value='20487900'

After "rocks sync slurm"

I still have the same Weight !!!

rocks report slurmnodes
#### Auto Created ########

NodeName=compute-0-0 NodeAddr=10.1.1.253 CPUs=8 Weight=20487900 
Feature=rack-0,8CPUs
NodeName=compute-0-1 NodeAddr=10.1.1.252 CPUs=8 Weight=20487899 
Feature=rack-0,8CPUs
NodeName=compute-0-2 NodeAddr=10.1.1.254 CPUs=8 Weight=20487898 
Feature=rack-0,8CPUs
NodeName=compute-0-3 NodeAddr=10.1.1.251 CPUs=24 Weight=20503897 
Feature=rack-0,24CPUs
NodeName=compute-0-4 NodeAddr=10.1.1.250 CPUs=8 Weight=20487896 
Feature=rack-0,8CPUs

Any idea how to do it.

Thanks a lot.


Chris


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