[GE users] bsub options in qsub

dougalb dougal.lists at gmail.com
Mon Feb 16 20:33:44 GMT 2009


Thank you for the very quick and helpful answer. I will look at it now
and see if this gets us a bit closer to getting LSF replaced. :-)


On Mon, Feb 16, 2009 at 9:17 PM, craffi <dag at sonsorol.org> wrote:
> For what you are talking about (exclusive access to systems or
> allowing users to consume more than 1 slot/cpu per task) the most
> common implementation I've seen involves using Grid Engine parallel
> environment objects in clever ways. This was written up in the past
> over here:
> http://gridengine.info/2005/09/22/allowing-user-jobs-to-take-over-entire-nodes
> The "threaded PE" model can be used for both of your examples --
> letting someone get full use of a system or letting someone "consume"
> what is effectively more than one CPU/jobslot for a single task.
> As a random side note I know of a group that will be running an LSF-to-
> SGE migration workshop in mid-March of this year in California. Once I
> get the full workshop details I'll post them.
> -Chris
> On Feb 16, 2009, at 2:47 PM, dougalb wrote:
>> Hi,
>> We are migrating a large user base from LSF6.1 HPC to GE. Two
>> features that are heavily used and I have been unable to replicate
>> are exclusive requests and span/ptile.
>> Under LSF users can submit a job using bsub -x and the node their
>> job will be started on will be exclusive to them.
>> Secondly users can submit a resource requirement to only assign 2
>> procs per node even though nodes have more procs available. e.g.
>> bsub -x -n 8 -R "span[ptile=2]". This is done because some jobs are
>> very IO intensive and max out the local disk throughput and
>> therefore can only run a limited number per of jobs per node.
>> We are running GE6.2u1. Is there a way to do this?
>> Kind regards,
>> Dougal Ballantyne
>> Axon ITC
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