1 Reply Latest reply on May 14, 2015 9:01 AM by joe_intel

    Promlems with Intel MPI ?

    Polly_LO

      I have trouble with running Intel MPI on cluster with different different numbers of processors on nodes (12 and 32).

      I use Intel MPI 4.0.3 and it works correctly on 20 nodes with 12 processors (Intel(Xeon(R)CPU X5650 @2.67)) at each, and all processors works correctly, then I try to run Intel MPI on other 3 nodes with 32 processors (Intel(Xeon(R)CPU E5-4620 v2@2.00) at each and they work correctly too.

      But when I try to run my tasks on all nodes with different types of processors and the same type of Intel MPI I cant use more than 48 processors. Spead falls. I use option --machinefile

      mpirun -machinefile mpihosts.txt ./wrf.exe

      mpihosts.txt (cn01:12

      cn02:12

      ...

      cn29:32

      cn30:32)

      How can I use Intel MPI 4.0.3 correctly on all of these nodes?