Configure mpi

  • mpi-selector --user --set mvapich2_gcc_qlc-1.7
  • export MPI_HOME=/usr/mpi/gcc/mvapich2-1.7-qlc
  • export MPI_INCLUDE=/usr/mpi/gcc/mvapich2-1.7-qlc/include
  • export GCC=/usr/bin/gcc

parallel shell:

pdsh -w lxbrf63c0[2-7],lxbrf65c0[3-7] ''

Latency measurement for 15 nodes. Node number 16 used as a front end machine, for mpirun. It used also to host software RAID1 NFS shared storage, and Infiniband subnet manager.

-bash-4.1$ mpi-selector --query

default:openmpi_gcc_qlc-1.4.3

level:user

osu_latency, point to point. 225 measurement points = 15 nodes * 15 nodes. Diagonal of the matrix represent measurement done inside single node MPI over shared memory.

  • techlab_inifiniband_latency_measeurement_openmpi.png:
    techlab_inifiniband_latency_measeurement_openmpi.png
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Topic revision: r1 - 2016-05-26 - AritzBrosaIartza
 
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