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I have submitted several jobs on a computing cluster, but did not set the --mail-user. Can I update the specification now? Hope to receive emails after the jobs finish running. Thanks a lot!

Yin-Jia Zhang
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I am not sure Slurm allows that. What you can do is submit a dummy job dependent on the already-submitted job (with jobid <your-job-id>), like this:

sbatch --mail-user=<your-email-address> --mail-type=START --dependency=afterany:<your-job-id> --wrap "echo OK"

so that this job will start only when the one you wanted to modify ends, and it will send an email then.

damienfrancois
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This is not a solution

In PBS and derivatives you could update job attributes with qalter command. In SLURM some of the functions of qalter can be performed with scontrol update, however it does not seem to update the mail-user attribute.

The scontrol update command would look like

scontrol update jobid=<your-job-id> mail-user=<your-email-address>

However this command does not work as mentioned by Damien Francois in the comments. SLURM reports the following error:

Update of this parameter is not supported: 
    mail-user=<your-email-address> Request aborted
Dima Chubarov
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    The suggested command fails with (Slurm version 15.08.11) ``Update of this parameter is not supported: mail-user= Request aborted``, and indeed the man page of scontrol does not mention any possibility of changing the email setting of the job. – damienfrancois Jul 05 '16 at 10:00
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MailUser and MailType fields can be updated. The default MailUser is the submitting user, so it may only be necessary to update the MailType.

scontrol update jobid=<jobid> MailUser=<user@domain.com>

scontrol update jobid=<jobid> MailType=<END,FAIL,...>

skytaker
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