[gridengine users] "Packing" jobs on nodes v2

[Mark Dixon]

On Mon, 14 May 2012, iqtcub wrote:
...
> I just tested with two virtual machines having 12 cores each. Same
> result, if i don't use a PE, it works fine, however if i use the PE smp
> i mentioned above(using $pe_slots as allocation_rule), it puts each job
> in a different node.
>
> I've also just tried using the binaries of OGS2011.11 with the same result.
>
> On the other hand, i've seen that in the other threads in the mailing
> list, the people seem to use this option only when the jobs are of 1
> core, which works perfectly.
>
> So, any hints? Anyone has it working for more than one core?
...

Apologies in advance if I've got the wrong end of the stick.

It sounds like you're trying to get all jobs to fill your nodes in a 
particular sequence, thereby allowing any usable "gaps" to be filled by 
small jobs and keeping the maximum number of empty nodes handy in case 
anyone wants to submit a big job. Is that right?

I don't know if I've missed anything myself but, in the past, I've found 
that this (queue_sort_method seqno, job_load_adjustments NONE, etc.) 
doesn't always work with PEs unless you specify a different seq_no for 
each queue instance. You might want to give that a go.

All the best,

Mark
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Mark Dixon                       Email    : m.c.dixon at leeds.ac.uk
HPC/Grid Systems Support         Tel (int): 35429
Information Systems Services     Tel (ext): +44(0)113 343 5429
University of Leeds, LS2 9JT, UK
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