[Beowulf] slow jobs when run through queue
chris at csamuel.org
Tue Dec 5 22:27:54 PST 2017
On Wednesday, 6 December 2017 4:47:42 PM AEDT Nick Evans wrote:
> Thanks Brian / Carl / Chris for places to look.... it turned out to be what
> Chris had mentioned and they were only requesting 1 CPU but trying to use
> all 48 in the machine.
There's the handy "nproc" command which will tell you how many cores you can
actually use - it's cgroups aware so it won't just blindly report all the
cores in the host. It's also part of coreutils so you should be able to
rely on it being there.
> Resubmitted the request asking for all CPU's and the job ran in the expected
> amount of time.
All the best,
Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC
More information about the Beowulf