[Mauiusers] MAXNODES broken?
csamuel at vpac.org
Tue Nov 2 16:18:49 MST 2004
On Sat, 30 Oct 2004 07:31 am, Hyrum Carroll wrote:
> In many cases, only a task or processor count is specified with the job and
> the node usage limit is ineffective.
This is more of a Torque question than a Maui question, but I'd really like to
know how (with Torque) you request a certain number of tasks rather than
We have a longstanding problem of not being able to ask for more CPUs (in any
configuration) than the number of nodes in the cluster. It's probably more
clear if I give an example. :-)
At the moment if I want to grab 60 CPUs at random on the cluster I can do:
qsub -l nodes=60
and I may end up with any old configuration - which is fine, it allows users
to get in and soak up spare CPUs if they don't especially want both CPUs on
each node they get.
However, if I that number of CPUs exceeds the number of nodes in our cluster
(90) then I get the following error:
qsub -l nodes=91
qsub: Job exceeds queue resource limits
Not unreasonable I guess as Torque believes that I'm really asking for that
many nodes, rather than 91 of the 180 CPUs.
So, how can I ask for 91 CPUs in any arrangement on our cluster ?
Christopher Samuel - (03)9925 4751 - VPAC Systems & Network Admin
Victorian Partnership for Advanced Computing http://www.vpac.org/
Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia
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