[Mauiusers] Inflexible node allocation

Jan Ploski Jan.Ploski at offis.de
Fri Oct 26 12:55:10 MDT 2007


I have 72 free processors and a job with a resource req nodes=16 (16 
processors). Maui assigns the job to a node which only has 3 out of 4 
processors available at the moment. For this reason, the job does not 
start - nor does any other job queued after it:

10/26 20:48:12 
10/26 20:48:12 ERROR:    job '357996' cannot be started: (rc: 15044 
errmsg: 'Resource temporarily unavailable REJHOST=node3 MSG=cannot 
allocate node 'node3' to job - node not currently available (nps 
needed/free: 4/3,  joblist: 357820.srvgrid01.offis.uni-oldenburg.de:0)' 
  hostlist: 'node3:ppn=4+node4:ppn=4+node5:ppn=4+node6:ppn=4')

Why does Maui insist on using the node with not enough processors? Can I 
do anything to make it change this decision? Also, where does the above 
specification with ppn=4 come from? Certainly not from my job file :-(

Any suggestions?

Jan Ploski

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