Parallel jobs running on same processors.

[Xiaoyu_W_]

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!

[TimP]

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_]

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]

Intel parallel studio cluster edition includes mpi.