Intel® DevCloud
Help for those needing help starting or connecting to the Intel® DevCloud
Announcements
Welcome to the Intel Community. If you get an answer you like, please mark it as an Accepted Solution to help others. Thank you!
682 Discussions

I am using Intel devcloud, openmp, numbers of threads

stuartknoy
Beginner
317 Views

Hi guys I am using intel DevCloud to compile and submit my numerical codes, openmp, etc - but I am only ever (not complaining) getting 12 threads - how do I get more cores/threads?? 

 

Maybe I am missing something

 

Stuart

0 Kudos
7 Replies
AthiraM_Intel
Moderator
302 Views

Hi,

 

Thanks for reaching out to us.

 

Intel oneAPI DevCloud has 3 different processors

 

Intel® Xeon® Scalable 6128 processors, Intel® Xeon® Scalable 8256 processors and Intel® Xeon® E-2176 P630 processors (with Intel® Graphics Technology)

 

 

Intel® Xeon® Scalable 6128 processor has 6 cores and 12 threads in one socket.

(https://ark.intel.com/content/www/us/en/ark/products/120482/intel-xeon-gold-6128-processor-19-25m-ca...)

 

Intel® Xeon® Scalable 8256 processor has 4 cores and 8 threads in one socket.

(https://ark.intel.com/content/www/us/en/ark/products/192467/intel-xeon-platinum-8256-processor-16-5m...)

 

Intel® Xeon® E-2176 P630 processor has 6 cores and 12 threads in one socket.

(https://ark.intel.com/content/www/us/en/ark/products/134867/intel-xeon-e-2176m-processor-12m-cache-u...)

 

Please refer the given links for more information.

You can refer the following link to know more about DevCloud:  https://devcloud.intel.com/oneapi/home/

 

You could find the architecture and features of the compute nodes available by using the command "pbsnodes" .

 

Also "lscpu" command will give the details of the compute node you are using.

 

If you have any further issues please let us know.

 

Thanks

 

 

stuartknoy
Beginner
296 Views

it seems like I am only getting one socket - i.e 12 threads

I submit me job like this

qsub -l nodes=1:gpu:ppn=2,walltime=24:00:00 -d . job.sh

and job.sh looks like this

source /opt/intel/inteloneapi/setvars.sh

make run

./cdem2D run_description 0 

where 0 on my command line means max threads

 

 

AthiraM_Intel
Moderator
281 Views

Hi,


You are using compute node with gpu, it has only one socket.

If you have any further issues please let us know.


Thanks.


AthiraM_Intel
Moderator
262 Views

Hi,


Could you please give us an update? Is your query clarified?


Thanks.


stuartknoy
Beginner
257 Views

Yes - I understand now I was interpreting "sockets" as cores - which they clearly aren't - so my openmp codes (compiled with icc) are running on one socket, 6 cores, 12 threads - and very quickly as well

stuartknoy
Beginner
256 Views

Yes - I understand now I was interpreting "sockets" as cores - which they clearly aren't - so my openmp codes (compiled with icc) are running on one socket, 6 cores, 12 threads - and very quickly as well

AthiraM_Intel
Moderator
245 Views

Hi,


Thanks for the confirmation. We would discontinue monitoring this issue, please raise a new thread if you have further issues.


Thanks.


Reply