[Mauiusers] requesting cores with ncpus
nt_mahmood at yahoo.com
Sun Jan 9 23:46:28 MST 2011
>Use nodes=18 instead of ncpus.W/o ppn nodes=X means requesting X number of CPU's
>w/o any geametry specification
When I chnaged the nodes=X (X>2), I get an error that there are no such
resources. Then I found a *magic* queue command in
did the job. Now when I request nodes=18, it allocates 16 cores from
one station and 2 cores from the other station.
That command is:
qmgr -c "set server resources_available.nodect=32"
where you can replace 32 with number of total cores you have in your cluster.
// Naderan *Mahmood;
From: rishi pathak <mailmaverick666 at gmail.com>
To: Mahmood Naderan <nt_mahmood at yahoo.com>
Cc: mauiusers at supercluster.org
Sent: Mon, January 10, 2011 9:05:23 AM
Subject: Re: [Mauiusers] requesting cores with ncpus
Use nodes=18 instead of ncpus.W/o ppn nodes=X means
requesting X number of CPU's w/o any geametry specification
On Sun, Jan 9, 2011 at 8:40 PM, Mahmood Naderan <nt_mahmood at yahoo.com> wrote:
>Recently I submitted a message to torque user group but found that my question
>is actually related to maui. Here is the problem:
>With two stations (server+worker) each has 16 cores, I want to submit a job but
>don't want to explicitly mention on which station.
>If I use "nodes=2:ppn=4", then 4 cores on each station is devoted. That is
>If I use "ncpus=18", I expect that maui put 16 processes on one station and 2
>the other automatically. However the actual result is that my job is deferred.
>Total Tasks: 1 Req TaskCount: 1 Partition: ALL Network: [NONE] Memory >=
>0 Disk >= 0 Swap >= 0 Opsys: [NONE] Arch: [NONE] Features: [NONE] Dedicated
>Resources Per Task: PROCS: 17 NodeCount: 1 IWD: [NONE] Executable: [NONE]
>Bypass: 0 StartCount: 0 PartitionMask: [ALL] Flags: RESTARTABLE job is
>deferred. Reason: NoResources (cannot create reservation for job '152'
>(intital reservation attempt) ) Holds: Defer (hold reason: NoResources)
>17.00 StartPriority: 1 cannot select job 152 for partition DEFAULT (job hold
>How can I fix that?
>// Naderan *Mahmood;
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>mauiusers at supercluster.org
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