[GE users] Job submission speed through DRMAA api.

Ron Chen ron_chen_123 at yahoo.com
Thu Jan 20 08:28:42 GMT 2005


Kevin,

Do you have a testcase?

Also, is it the submission speed that is slow, or the
job dispatch speed that is slow? They are very
different, so may be you can tell us more about how
you discovered the speed problem.

 -Ron


--- Stephan Grell <stephan.grell at sun.com> wrote:
> When the "-w e" switch is set, the qmaster evaluates
> first, if the job 
> can run in the grid.
> This might be time consuming, but not really
> notable.
> 
> My 2 cents,
> Stephan
> 
> Daniel Templeton wrote:
> 
> > qsub is actually built on top of the same core as
> DRMAA, so job 
> > submission is ultimately handled the same way for
> both.  Unless you 
> > are setting more than the basic DRMAA attributes,
> there's only a 
> > couple of job options that get set with DRMAA
> which do not get set 
> > with qsub.  If you look in the drmaa_attributes
> man page, you will 
> > find the options set by DRMAA by default: "-p 0",
> "-b yes", "-shell 
> > no", and "-w e".  If there is a difference, it
> must come from one of 
> > these.  You can programmatically experiment by
> overriding these 
> > options, one by one, with the
> DRMAA_NATIVE_SPECIFICATION attribute.  
> > If you find something interesting, please let me
> know. :)
> >
> > Daniel
> >
> > Kevin Ruland wrote:
> >
> >>
> >> Hi all,
> >>
> >> I'm using the DRMAA api in SGE 6.0u1 and it seems
> that job submission 
> >> through drmaa_run_job method.  It appears to take
> quite a bit of time 
> >> for the submitted job to actually begin
> execution.  More time than 
> >> submitting similar scripts submitted through
> qsub.
> >>
> >> Should there be a difference?
> >>
> >> Thanks much.
> >>
> >> Kevin Ruland
> >> University of Kansas
> >>
> >>
> >>
>
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