[gridengine users] queues behaving differently

[John Young]

On 07/10/2012 04:14 PM, Rayson Ho wrote:
> On Tue, Jul 10, 2012 at 4:02 PM, John Young <j.e.young at larc.nasa.gov> wrote:
>>> If you really have a real use-case for setting the # of descriptors in
>>> the queue config, then let us know and we can implement that in OGS/GE
>>> (... when time permits).
>>>
>> Well...  I have an engineer here who want to run a 2048 core job.  When
>> he tries, he gets this error:
>
> I mean, a real use-case that needs the limit to be part of the queue
> config, and one that can't just use the method I described in:
>
> http://gridengine.org/pipermail/users/2012-May/003705.html
>
>
> If you have a real good reason that setting S_DESCRIPTORS &
> H_DESCRIPTORS in sge_conf(5) is not enough, then we can try to improve
> things a bit... but the bottom line is that we need a good use-case.
> (Even if we had unlimited time, we still don't want to add code that
> duplicates existing code. Having said that, we can remove existing
> code and switch to the new code if needed.)
>
> You should be able to fix the issue by setting S_DESCRIPTORS &
> H_DESCRIPTORS, or you can check the environment that starts the execd,
> and see if it has a lower descriptor limit...
>
> http://gridscheduler.sourceforge.net/htmlman/htmlman5/sge_conf.html
>
> Rayson

I have already modified the queue config as follows:


execd_params             S_DESCRIPTORS=20480 H_DESCRIPTORS=65536 \
                          ENABLE_BINDING=true

With this in place, it seems odd that from one of my queues I
get a default setting for the number of descriptors of 1024.

So I have two questions really:

1. Why am I getting different behavior from the two queues?
2. Since H_DESCRIPTORS=65536, why can't I request that amount and get it?

JY