[gridengine users] strange cpu time and wallclock

Jerome jerome at ibt.unam.mx
Thu Dec 7 17:34:42 UTC 2017


Dear Mike

So you confir my doubt. I'v to see why this NCBI program is using more 
than one thread!!!

Regards

Le 07/12/2017 à 11:07, Mike Serkov a écrit :
> Jerome,
> 
> It just means that your job used more than one CPU ( probably multithreaded task, or something is running In parallel) SGE doesn't limit your job to use more CPUs than slots requested ( in general - the slot is abstract and just a place on the server for the job, not  physical CPU. ).
> 
> Best regards,
> Mikhail Serkov
> 
> Sent from my iPhone
> 
>> On Dec 7, 2017, at 11:50 AM, Jerome <jerome at ibt.unam.mx> wrote:
>>
>> Dear all.
>>
>> I've a bit confusiong about some accounting data get back from a single job:
>>
>> qname        all.q
>> hostname     compute-0-4.local
>>
>> ../..
>>
>> slots        1
>> failed       0
>> exit_status  0
>> ru_wallclock 1761
>> ru_utime     2066.817
>> ru_stime     104.779
>> ru_maxrss    56872
>> ru_ixrss     0
>> ru_ismrss    0
>> ru_idrss     0
>> ru_isrss     0
>> ru_minflt    227175
>> ru_majflt    0
>> ru_nswap     0
>> ru_inblock   0
>> ru_oublock   51524248
>> ru_msgsnd    0
>> ru_msgrcv    0
>> ru_nsignals  0
>> ru_nvcsw     1382558
>> ru_nivcsw    441419
>> cpu          2171.596
>> mem          73.691
>> io           272.204
>> iow          0.000
>> maxvmem      223.262M
>> arid         undefined
>>
>>
>> I'm surprise that the wallclock time (1761) is less than the cpu time (2171) , in a single core jobs. In this case, i've got an eficiency more than 120 % !!!
>>
>> I'm sure i'm wrong, but can't know where..
>>
>> Thanks.
>>
>> -- 
>> -- Jérôme
>> Si le problème a une solution, il ne sert à rien de s'inquiéter.
>> Mais s'il n'en a pas, alors s'inquiéter ne change rien.
>>     (Proverbe tibétain)
>> _______________________________________________
>> users mailing list
>> users at gridengine.org
>> https://gridengine.org/mailman/listinfo/users


-- 
-- Jérôme
Quand le coeur n'y est pas, les mains ne sont pas habiles.
	(Proverbe chinois)



More information about the users mailing list