On Tue, Oct 09, 2007 at 06:15:25PM +0800, qq w alleged: > Dear Maui users, > I am new to PBS, and I got a problem in load balance when running a job > with two compute nodes. > I want to distribute a job into two compute nodes by typing : > qsub -l nodes=2 myjob.sh > > 'pbsnodes -a' shows that both the nodes are working: > > ------------------------------- > oscarnode1 > state = job-exclusive > np = 1 > ntype = cluster > jobs = 0/141.oscarserver.privatedomain > status = opsys=linux,uname=Linux oscarnode1.privatedomain > 2.6.11-1.1369_FC4smp #1 SMP Thu Jun 2 23:08:39 EDT 2005 i686,sessions=? > 0,nsessions=? > 0,nusers=0,idletime=1956,totmem=1006628kb,availmem=984676kb,physmem=506640kb,ncpus=1,loadave= > 0.00,netload=236939874,state=free,jobs=141.oscarserver.privatedomain > ,rectime=1191972909 > > oscarnode2 > state = job-exclusive > np = 1 > ntype = cluster > jobs = 0/141.oscarserver.privatedomain > status = opsys=linux,uname=Linux dchen-linux 2.6.11-1.1369_FC4 #1 Thu > Jun 2 22:55:56 EDT 2005 i686,sessions=2255 24746 29308 > 29427,nsessions=4,nusers=3,idletime=1484,totmem=1563892kb,availmem=705020kb,physmem=515324kb,ncpus=1,loadave= > 1.20,netload=2678038614,state=free,jobs=141.oscarserver.privatedomain > ,rectime=1191 > ------------------------------ > > But, cluster monitor shows : node1 is idle , while node2's CPU and memory > resource is almost 100% occupied. > How can I solve the load balancing problem?
Maui merely schedules the nodes. Once PBS starts the job, it is the responsibility of your batch script to use the nodes. The nodes assigned to your job are in the file named in $PBS_NODEFILE.
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