Rayson,

Thanks for the pointer. In the qmon scheduler configuration, I have
"Job Scheduling Information" set to true. I assume that's the same
setting you're refering to?

With this setting enabled, I still don't get very much info. When I
run qstat -j on my jobs, the only thing it tells me is that a queue
instance for a particular node is dropped because that node is
disabled.

Thanks,
Lane

On Thu, Mar 10, 2011 at 4:28 PM, Rayson Ho <[email protected]> wrote:
> Turn on "schedd_job_info", and run qstat -j to see why the scheduler
> is not assigning jobs.
>
> http://gridscheduler.sourceforge.net/htmlman/htmlman5/sched_conf.html
> http://gridscheduler.sourceforge.net/howto/troubleshooting.html
>
> Rayson
>
>
>
> On Thu, Mar 10, 2011 at 2:04 PM, Lane Schwartz <[email protected]> wrote:
>> Hi,
>>
>> Lately I've noticed that many of my jobs take much longer than
>> expected (sometimes up to half an hour)  to go from pending to
>> running, even when there are numerous nodes with sufficient resources
>> available. Right now, for example, I've got a couple dozen jobs in
>> pending, and 38 nodes where no jobs are running.
>>
>> I was wondering if anyone might be able to shed some light on why this
>> might be. As I said, there are plenty of nodes with sufficient
>> resources available to run the pending jobs, but they sometimes take a
>> long time to go from pending to running.
>>
>> For reference, mem_free is set to consumable, and my jobs use the
>> default value of 4GB for their requested mem_free. There are some
>> other users' jobs which request more memory than that.
>>
>> The only clue I've been able to find is from examining the qmaster
>> messages log file. It has lots of lines that look like the errors
>> below:
>>
>> 03/10/2011 13:56:00|worker|t3n2|E|host load value "mem_free" exceeded:
>> capacity is 66765959168.262146, job 495795 requests additional
>> 68719476736.000000
>> 03/10/2011 13:56:00|worker|t3n2|E|cannot start job 495795.1, as
>> resources have changed during a scheduling run
>> 03/10/2011 13:56:00|worker|t3n2|W|Skipping 108 remaining orders
>> 03/10/2011 13:56:00|worker|t3n2|E|cannot start job 495795.1, as
>> resources have changed during a scheduling run
>>
>> Any tips or pointers would be appreciated.
>>
>> Thanks,
>> Lane
>> _______________________________________________
>> users mailing list
>> [email protected]
>> https://gridengine.org/mailman/listinfo/users
>>
>



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