Hi Ralph, Reuti,
I've just observed the same issue without specifying -np.
Please find attached the ps -elfax output from the computing nodes and some sge related information.
From: Ralph Castain <email@example.com>
Sent: Wed 04-11-2012 02:25 pm
Subject: Re: [OMPI users] sge tight integration leads to bad allocation
To: Open MPI Users <firstname.lastname@example.org>;
On Apr 11, 2012, at 6:20 AM, Reuti wrote:
> Am 11.04.2012 um 04:26 schrieb Ralph Castain:
>> Hi Reuti
>> Can you replicate this problem on your machine? Can you try it with 1.5?
> No. It's also working fine in 1.5.5 in some tests. I even forced an uneven distribution by limiting the slots setting for some machines in the queue configuration.
Thanks - that confirms what I've been able to test. It sounds like it is something in Eloi's setup, but I can't fathom what it would be - the allocations all look acceptable.
I'm stumped. :-(