[email protected] writes:
> There's also the very useful Python hostlist package for translating
> from this format and back to it.
The URL for the mentioned hostlist package is:
http://www.nsc.liu.se/~kent/python-hostlist/
>> $ scontrol show hostlist tux1,tux3,tux4
>> tux[1,3-4]
>> $ scontrol show hostnames tux[1,3-4]
>> tux1
>> tux3
>> tux4
A few examples:
# hostlist tux1 tux2,tux3
tux[1-3]
# echo -e "tux1\ntux2"|hostlist -n -
2
# hostlist -e "tux[1-2]"
tux1
tux2
# hostlist -d "tux[1-10]" "tux[5-7]"
tux[1-4,8-10]
Another useful example, say some application require hosts specified in
the format host1:ncpus,host2:ncpus: then I can just use the following
in the batch script:
hostlist --append=":$(SLURM_TASKS_PER_NODE)" --separator="," -e
"$(SLURM_JOB_NODELIST)"
# hostlist --append=":8" --separator="," -e "tux[1-3]"
tux1:8,tux2:8,tux3:8
Another option is the "nodeset" command from ClusterShell. I think it
can do about the same things as our hostlist util, but I have not had
time to look into it:
http://sourceforge.net/apps/trac/clustershell
Regards,
Pär Andersson
NSC
