Intel® DevCloud
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disable hyperthreading devcloud

dreamalone
Beginner
287 Views

Is there any way to run the parallel job without hyperthreading on?

because of hyperthreading my program is taking too much time to finish

#PBS -l nodes=2:ppn=12,walltime=24:00:00

But when I use

#PBS -l nodes=1:ppn=12,walltime=24:00:00

my job starts within a sec.

0 Kudos
6 Replies
JananiC_Intel
Moderator
263 Views

Hi,


Thanks for posting in Intel forums.


Are you using mpi in your code? Could you share the reproducer to check from our end?


Regards,

Janani Chandran


dreamalone
Beginner
259 Views

@JananiC_Intel  Apology for the late response.
Yes I am using MPI in the code.
The code is Quantum Espresso (https://www.quantum-espresso.org/)
if you require input files then will share. But i believe you can get all the information on the given site.
Please have a look.

JananiC_Intel
Moderator
238 Views

Hi,


Thanks for the update.


We will check on this internally and let you know.


Regards,

Janani Chandran


dreamalone
Beginner
233 Views
dreamalone
Beginner
223 Views

@JananiC_Intel 

My problem is resolved.

My job is taking a lot of time because of inter-node MPI communication.
Not because of Hyperthreading.

JananiC_Intel
Moderator
200 Views

Hi,


Glad to know that your issue is resolved. If you need any additional information, please submit a new question as this thread will no longer be monitored


Regards,

Janani Chandran


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