Hi Reuti,
Thanks for your prompt answer, I'm requesting a default like parallel
environment when I submit a job :
-----------------------------------
pe_name parallel_single
slots 128
user_lists NONE
xuser_lists NONE
start_proc_args /bin/true
stop_proc_args /bin/true
allocation_rule $pe_slots
control_slaves FALSE
job_is_first_task FALSE
urgency_slots min
accounting_summary FALSE
-----------------------------------
I submit with : qsub -pe parallel_single 64 -q 1day.q job.sh
with: qconf -sq 1day.q :
-----------------------------------------------
qname 1day.q
hostlist node1 node2
...
pe_list parallel_single
...
slots 64,[node1=64],[node2=64]
...
-----------------------------------------------
I feel that load average is the only criterion preventing a new job to
start on the node I expect. I perhaps missed something, please let me
know if so.
Best Regards,
Edrisse
On 01/07/2014 07:31 PM, Reuti wrote:
Hi,
Am 07.01.2014 um 15:53 schrieb Edrisse Chermak:
I have two 64 CPU nodes, node1 running a 16 CPUs job, and node2 which is
free:
HOSTNAME ARCH NCPU LOAD
node1 linux-x64 64 16.00
node2 linux-x64 64 0.00
When I launch a 2nd job asking for 64 CPU, Grid Engine sends sometimes
the new job to node1.
This sounds like you are submitting a multi-core job without requesting a parallel
environment (PE). It would be good to request for all parallel jobs a PE for the job
where you specify 16 resp. 64 cores. Then this can't happen at all due to lack of free
cores on node 1. A plain PE with the default values when you define a new one is
sufficient, often it's named "smp" if it should stay on one node only for all
slots.
`man sge_pe`
and submit:
$ qsub -pe smp 64 job.sh
(It's necessary to set the proper slot count [i.e. "64"] in the queue
definition.)
-- Reuti
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