[Mauiusers] Requesting a given number of processors

Toni L. Harbaugh-Blackford [Contr] harbaugh at ncifcrf.gov
Fri Sep 28 10:39:54 MDT 2007

On Fri, 28 Sep 2007, Jan Ploski wrote:

  > mauiusers-bounces at supercluster.org schrieb am 09/28/2007 03:50:12 PM:
  > > On Fri, 28 Sep 2007, Jan Ploski wrote:
  > > 
  > > > However, it still doesn't allocate correctly. I now tried with
  > > > ncpus=9, which is more than the number of processors in any single
  > > > node:
  > > 
  > > Ahh, as I said previously, you can't use ncpus as that's only for 
  > > requesting CPUs on a single CPU box.
  > > 
  > > You need to do nodes=9 to get what you need..
  > I tried with nodes=9 now. A bit better than ncpus=9, but unfortunately 
  > still wrong:

I will look back at my configuration from a few months ago to figure out
how I did this.  I actually had to *stop* my setup from doing the very thing
you want to do.

I know that in order to stop the behavior, I had to set nodect=1 and nodes=1 in 
my qmgr setup.  However, I don't know what else may be allowing this to work
when nodect=1 and nodes=1 are removed.


  > Messages:  cannot start job - RM failure, rc: 15044, msg: 'Resource 
  > temporarily unavailable REJHOST=node37 MSG=cannot allocate node 'node37' 
  > to job - node not currently available (nps needed/free: 4/1,  joblist: 
  > 346591.srvgrid01.offis.uni-oldenburg.de:0,346610.srvgrid01.offis.uni-oldenburg.de:1,346630.srvgrid01.offis.uni-oldenburg.de:2)'
  > PE:  9.00  StartPriority:  -89
  > job can run in partition DEFAULT (47 procs available.  9 procs required)
  > For some unfathomable reason it is trying to allocate 4 procs on node37... 
  > Even though there are other nodes with 4 processors available... Or it 
  > could pick 1 processor from node37 and the rest from other nodes.
  > Best regards,
  > Jan Ploski
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Toni Harbaugh-Blackford                       harbaugh at ncifcrf.gov
System Administrator
Advanced Biomedical Computing Center (ABCC)
National Cancer Institute
Contractor - SAIC/Frederick

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