[Mauiusers] Exclusive node access
rlim3 at unl.edu
Fri Mar 5 09:28:31 MST 2010
I'm trying to get exclusive node access with the Maui + Torque installation that I have.
qsub -I -l walltime=1:00:00,select=10 -W x="NACCESSPOLICY:SINGLETASK"
but the tasks can end up all on the same machine. At least from what I read at
the tasks should be spread across nodes, one task from that job per node exclusively. In my example, I'm looking to get 10 distinct nodes (from select=10).
Running checkjob on this job shows that at least Maui recognizes the singletask request, but somehow it is not honored when the resources are allocated. Do I have something wrong with my Maui installation? I have Maui 3.2.6p21 and Torque 2.3.7. Any help/suggestions is appreciated.
This is what I run and get:
rlim at logon ~$ qsub -I -l walltime=1:00:00,select=10 -W x="NACCESSPOLICY:SINGLETASK"
qsub: waiting for job 1674361.ff-head.unl.edu to start
qsub: job 1674361.ff-head.unl.edu ready
rlim at c1518 ~$ cat $PBS_NODEFILE
Then as root on the head node:
[root at ff-head ~]# checkjob -v 1674361
checking job 1674361 (RM job '1674361.ff-head.unl.edu')
Creds: user:rlim group:swanson class:default qos:high
WallTime: 00:00:00 of 1:00:00
SubmitTime: Fri Mar 5 10:16:42
(Time Queued Total: 00:00:06 Eligible: 00:00:06)
StartTime: Fri Mar 5 10:16:48
Total Tasks: 10
Req TaskCount: 10 Partition: DEFAULT
Network: [NONE] Memory >= 0 Disk >= 0 Swap >= 0
Opsys: [NONE] Arch: [NONE] Features: [NONE]
Exec: '' ExecSize: 0 ImageSize: 0
Dedicated Resources Per Task: PROCS: 1
Utilized Resources Per Task: [NONE]
Avg Util Resources Per Task: [NONE]
Max Util Resources Per Task: [NONE]
Task Distribution: c1518,c1518,c1518,c1518,c1518,c1518,c1518,c1518,c1515,c1515
IWD: [NONE] Executable: [NONE]
Bypass: 0 StartCount: 1
Reservation '1674361' (00:00:00 -> 1:00:00 Duration: 1:00:00)
PE: 10.00 StartPriority: 1010088
Holland Computing Center
University of Nebraska - Lincoln
email: rlim3 at unl.edu / voice: (402) 554-2323 / web: http://hcc.unl.edu/
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