[Wien] Query regarding running less cpu core than available in the machine

[shamik chakrabarti]

Dear Sir,

               I have seen it directly from cpu monitor. The usage of the
cpus are 100% at all the 48 cpus (24 core). I have started 4 calculations &
the cpu usage are as follows:
lapw1  2400
lapw1  600
lapw1  400
lapw1  100

Eagerly waiting for your advice.

with regards,

On Mon, 8 Jul 2019 at 21:33, shamik chakrabarti <shamik15041981 at gmail.com>
wrote:

> Dear Sir,
>
>                I have seen it directly from cpu monitor. The usage of the
> cpus are 100% at all the 48 cpus (24 core)
>
> On Mon, 8 Jul 2019 at 21:11, Peter Blaha <pblaha at theochem.tuwien.ac.at>
> wrote:
>
>> How did you find out that it has taken all 24 cores ?
>>
>> Am 08.07.2019 um 13:06 schrieb shamik chakrabarti:
>> > Dear wien2k users,
>> >
>> >                               I have installed wien2k in a system
>> having
>> > Ubuntu. If I set OMP_NUM_THREAD = 2/3/4, it is taking all the available
>> > 24 cores. Whereas if I set OMP_NUM_THREAD = 1 it is taking only 1 cpu
>> > per calculation. My query is how can I use more than 1 cpu but less
>> than
>> > the total available cores (say I want to use 20 cores while total
>> > available cores are 24)..
>> >
>> > Any response in this regard will be helpful for us.
>> >
>> > with regards,
>> >
>> > --
>> > Dr. Shamik Chakrabarti
>> > Project Employee
>> > Dept. of Metallurgical and Materials Engineering
>> > IIT Kharagpur
>> > Kharagpur-721302
>> > INDIA
>> >
>> > _______________________________________________
>> > Wien mailing list
>> > Wien at zeus.theochem.tuwien.ac.at
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>> > SEARCH the MAILING-LIST at:
>> http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/index.html
>> >
>>
>> --
>> --------------------------------------------------------------------------
>> Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
>> Phone: +43-1-58801-165300             FAX: +43-1-58801-165982
>> Email: blaha at theochem.tuwien.ac.at    WIEN2k: http://www.wien2k.at
>> WWW:
>>
>> http://www.imc.tuwien.ac.at/tc_blaha-------------------------------------------------------------------------
>>
>> _______________________________________________
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>>
>
>
> --
> Dr. Shamik Chakrabarti
> Project Employee
> Dept. of Metallurgical and Materials Engineering
> IIT Kharagpur
> Kharagpur-721302
> INDIA
>


-- 
Dr. Shamik Chakrabarti
Project Employee
Dept. of Metallurgical and Materials Engineering
IIT Kharagpur
Kharagpur-721302
INDIA
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