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Parallel jobs running on same processors.

Xiaoyu_W_
Beginner
134 Views

Hello,

I just got a KNL system which has 68 cores with 4 threads each. So basically, it should run 272 jobs. I submit my first job using mpiexec and used 64 of them. Then I submitted another one with 64. But when I checked the CPU usage, I found that the two jobs were running on the same 64 threads and left the rest empty. What kind of environmental variable should I set? Or what kind of job schedulers are recommended? Btw, we did not purchase the PBS because it is commercial and out our budget.

Thanks!

 

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3 Replies
TimP
Black Belt
134 Views

Those environment variables for Intel MPI should be covered in the "getting started..." document which should be installed with MPI, as well as e.g. https://software.intel.com/en-us/node/528818

Xiaoyu_W_
Beginner
134 Views

Tim P. wrote:

Those environment variables for Intel MPI should be covered in the "getting started..." document which should be installed with MPI, as well as e.g. https://software.intel.com/en-us/node/528818

I have installed the Parallel studio. Is Intel MPI library part of Parallel XE studio?

TimP
Black Belt
134 Views
Intel parallel studio cluster edition includes mpi.
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