[slurm-users] require info on merging diff core count nodes under single queue or partition

Loris Bennett loris.bennett at fu-berlin.de
Mon May 18 13:59:14 UTC 2020

Hi Sudeep,

I am not sure if this is the cause of the problem but in your slurm.conf
you have 


  NodeName=node[1-10] Sockets=2 CoresPerSocket=8 ThreadsPerCore=1 Procs=16  RealMemory=60000  State=IDLE
  NodeName=gpu[1-2] CPUs=16 Gres=gpu:2 State=IDLE

  NodeName=node[11-22] Sockets=2 CoresPerSocket=16 ThreadsPerCore=1 Procs=32 State=IDLE
  NodeName=node[23-24] Sockets=2 CoresPerSocket=20 ThreadsPerCore=1 Procs=40 State=IDLE
  NodeName=gpu[3-4] CPUs=32 Gres=gpu:1 State=IDLE

But if you read

  man slurm.conf

you will find the following under the description of the parameter
"State" for nodes:

  "IDLE" should not be specified in the node configuration, but set the
  node state to "UNKNOWN" instead.



Sudeep Narayan Banerjee <snbanerjee at iitgn.ac.in> writes:

> Dear Loris: I am very sorry to address as Support; actually it has
> become a bad habit for me which I will change. Sincere Apologies!
> Yes, I have checked while adding hybrid arch of hardware but while
> executing slurmctld, it shows mismatch in core-count and also the
> existing 32core nodes goes to Dowm/Drng mode and new 40-core nodes
> sets to IDLE.
> Any help/guide to some link will be highly appreciated!
> Thanks & Regards,
> Sudeep Narayan Banerjee
> System Analyst | Scientist B
> Information System Technology Facility
> Academic Block 5 | Room 110
> Indian Institute of Technology Gandhinagar
> Palaj, Gujarat 382355 INDIA
> On 18/05/20 6:30 pm, Loris Bennett wrote:
>  Dear Sudeep,
> Sudeep Narayan Banerjee <snbanerjee at iitgn.ac.in> writes:
>  Dear Support,
> This mailing list is not really the Slurm support list.  It is just the
> Slurm User Community List, so basically a bunch of people just like you.
>  node11-22 is having 16cores socket x 2 and node23-24 is having 20cores
> socket x 2. In slurm.conf file (attached), can we merge all the nodes
> 11-24 (having different core count) and have a single queue or
> partition name?
> Yes, you can have a partition consisting of heterogeneous nodes.  Have
> you tried this?  Was there a problem?
> Cheers,
> Loris
Dr. Loris Bennett (Mr.)
ZEDAT, Freie Universität Berlin         Email loris.bennett at fu-berlin.de

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