[Aces-support] walltime question

[Huajian Yao]

Greg,

Thanks a lot for your quick reply!
Maybe you misunderstood my last email. The reason I want to switch to
'one' queue is that I can run up to 64 jobs at the same time. But with
'long' queue, I can only have a maximum of 8 jobs. However, the maximum
walltime seems to be 2 hours (according to acesgrid.org) which does not
satisfy my computation time for each job. Is it possible that I require
walltime for 'one' queue like: qsub -q one -l nodes=1,walltime=12:00:00 ?

Huajian

Quoting aces-admin at techsquare.com:

> hello hiyao-
>
> i believe that you may be over-thinking this.
>
> your job, for example, does not take any longer
> to run when executed in the 'long' queue than
> when executed in the 'one' queue
>
>  unless your job does not terminate and you
>  simply wait for the queue-system to beat it
>  up. in this case, you should write some terminal
>  conditions to your job.
>
> what you may notice, however, is that jobs in
> the 'one' queue are scheduled more readily than
> jobs in the 'long' queue. this has more to do
> with the default resource requirements for each
> queue and you should be able to achieve similar
> scheduling results by submitting your job to the
> 'long' queue and requesting only 12h of walltime.
>
>  qsub -q long -l nodes=1,walltime=12:00:00
>
> did i mis-read your message entirely or is this
> 'on the right track' ?
>
> [greg]
>
>
>
>
>> Date: Tue, 02 Dec 2008 10:25:46 -0500
>> From: Huajian Yao <hjyao at mit.edu>
>> MIME-Version: 1.0
>> Cc:
>> Reply-To: ACES-support at mitgcm.org
>>
>> Hi,
>>
>> I am running (many) jobs each with single node one cpu on the cluster. The
>> computation
>> time usually takes about 9-12 hours for each job. Usually I run my 
>> code using
>> "long" job which works pretty well but takes too much time. I have 
>> heard from
>> someone that the walltime for "one" type job has changed to 12 
>> hours. However,
>> on
>> the acesgrid.org, the walltime for "one" is still 2 hours. Yesterday I tried
>> some "one" type jobs on the cluster but all killed after about 6 
>> hours. Could
>> you
>> please let me what is the real walltime for "one" type job? Thanks a lot!
>> And I really hope the walltime for "one" can extend to 12 hours.
>>
>> Huajian
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>> Aces-support mailing list
>> Aces-support at acesgrid.org
>> http://acesgrid.org/mailman/listinfo/aces-support
>>
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