Re: [Opaltoolkit-users] Specifying the number of processors for a parallel job

[Doug J. <Dou...@us...>]

Hi, Luca:

Thanks for the patch.  I'm using rocks 4.3 64 bit.

-Doug


Luca Clementi wrote:
> Jennewein, Douglas M wrote:
>> Hi, Luca:
>>
>> I am using the Opal 1.9.3 Rocks roll, and a patch would be great.
>> Thanks!
>>
>> -Doug
>>
>
> Hi Doug,
> we have released Opal 1.9.5 with the cpu input feature.
>
> Attached there is the patch to from 1.9.3 to 1.9.5, although I think 
> that this can create some problem. In fact if you have done any 
> modification to the opal source code it will fail.
>
> Somewhere next week we will make a new opal roll with this version (I 
> would wait for that).
> What version of Rocks do you have (32 or 64 bits)?
>
>
> Luca
>
>
>> -----Original Message-----
>> From: Luca Clementi [mailto:lcl...@uc...] Sent: Wednesday, 
>> September 10, 2008 1:52 PM
>> To: Jennewein, Douglas M
>> Cc: opa...@li...
>> Subject: Re: [Opaltoolkit-users] Specifying the number of processors
>> foraparallel job
>>
>> Jennewein, Douglas M wrote:
>>> Hi, Jane:
>>>
>>>  
>>>
>>> I looked at the num.procs entry in opal.properties, and determined
>> that
>>> if I set num.procs but do not pass the "n" parameter to the generic 
>>> service client I get an error saying that I have not specified the 
>>> number of processors for a parallel job.  Also, if I set num.procs to
>> 4
>>> and then launch an opal job with the generic service client passing it
>>
>>> "n 7" to run on 7 processors I get an error saying there are not
>> enough
>>> available processors.  But if I specify 4 or fewer processors the 
>>> job runs.  This lead me to believe that num.procs is used to specify 
>>> the total processors available for opal jobs.  Is that correct?
>>>  
>>>
>>> -Doug
>>>
>>
>> Dear Doug,
>> you are right.
>>
>> num.proc is used to specify the maximum number of proc you want to 
>> expose with opal, then you have to specify the number of processors 
>> you actually wanna use when you launch a job.
>>
>> So for the command line client it is already supported, but not for 
>> the web interface.
>>
>> What version are you using? I can patch Opal web interface to support 
>> that feature and make a new release 1.9.5 in a short time frame (less 
>> than a week). This was on my TODO list for a long time.
>>
>> Sincerely,
>> Luca
>>
>

-- 
Doug Jennewein
Research Analyst
Department of Computer Science
University of South Dakota
Vermillion, SD 57069
(605) 677-5388
(605) 677-6662 (fax)
Dou...@us...