CODEWITHSUNDEEP
hpc
Rafael
Rafael

Reputation: 382

hpc job allocation with salloc & srun

I'm trying to distribute process in a hpc with 8 cores per node, I also have a partition with 2 nodes.

I have done this csh test script:

#!/bin/tcsh
foreach i (`seq 30`)
    srun csh -c "echo 'running${i} into:'; hostname; sleep 10;echo 'end ${i}'" &
end
echo "waiting for jobs completion"
wait

And I want to run it with salloc:

salloc -N2 -p mypartition testsalloc.sh

The script launch the 30 processes simultaneously when I expected that 16 were launched and 14 were queued.

Is this behaviour posible to do with salloc and srun?

Upvotes: 0

Views: 1215

Answers (2)

damienfrancois
damienfrancois

Reputation: 59260

You could have used sbatch rather than salloc and your original script would have most probably given the expected result

Upvotes: 1

Rafael
Rafael

Reputation: 382

Finally I have found a solution only adding this params to srun command:

srun --ntasks=1 --exclusive ....

Upvotes: 0

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