topic Quote:Tim P. wrote: in Intel® MPI Library

Parallel jobs running on same processors.

Xiaoyu_W_ — Fri, 07 Jul 2017 19:20:08 GMT

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!

Those environment variables

TimP — Sat, 08 Jul 2017 10:44:37 GMT

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

Quote:Tim P. wrote:

Xiaoyu_W_ — Sat, 08 Jul 2017 18:20:38 GMT

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?

Intel parallel studio cluster

TimP — Sat, 08 Jul 2017 20:07:41 GMT

Intel parallel studio cluster edition includes mpi.