I still have following doubt:
I understand that n_jobs "should be depending on the number of cpu cores
available on your machine". But I am running code on Grid computing
environment where I have to specify the number of CPU cores in advance.
Does this mean if I (reserve 64 cores and) specify n_jobs=64 the job will
take (Approximately) half of the time then n_jobs=32 ?
And again just to be sure :
What if I (reserve and) specify n_jobs= 35 , will all the 35 cores be used
(while the maximum possible job combination is 32)?
*I want to avoid the situation where the CPU core is reserved but not used.*
On 21 August 2014 13:34, Sheila the angel <[email protected]> wrote:
> First Thanks for reply.
>
> @Hames : I understand that n_jobs "should be depending on the number of
> cpu cores available on your machine". But I am running code on Grid
> computing environment where I have to specify the number of CPUs in
> advance.
>
> Does this mean if I (reserve 64 cores and) specify n_jobs=64 the job will
> take (Approximately) half of the time then n_jobs=32 ?
>
> And again just to be sure :
> What if I (reserve and) specify n_jobs= 35 , will all the 35 cores be used
> (while the maximum possible job combination is 32)?
>
> Off course, I want to avoid the situation where the core is reserved but
> not used.
>
>
>
>
> On 21 August 2014 13:03, Lars Buitinck <[email protected]> wrote:
>
>> 2014-08-21 12:32 GMT+02:00 Sheila the angel <[email protected]>:
>> > 1. What should be the n_jobs value, 8 or (8*4=) 32 ?
>>
>> n_jobs is the number of CPUs you want to use, not the amount of work.
>> (It's a misnomer because the number of jobs/work items is variable;
>> the parameter determines the number of workers performing the jobs.)
>>
>>
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