[gridengine users] double seizure of processors

[Ursula Winkler]

Reuti wrote:
>> I have a problem with mvapich2-jobs: if 2 jobs share the same host (e.q. two 4 core jobs on a 12 core host), then the SGE allocates partly the *same* cores to the two jobs so every one is only getting 50% cpu time. How can this be avoided?
>>     
>
> did you request any "-binding" to `qsub`? Otherwise it should be an effect of the scheduler in the kernel.
>
> -- Reuti
>
>   
>
No, no "-binding" to qsub. The selection should make the SGE. But it 
does not check that some cores are already used and chooses the same one 
a second time.

Ursula