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You are here: Compendium » SystemTaurus » HardwareTaurus » SDFlex

Difference: SDFlex (r2 vs. r3)

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Hints for usage

  • granularity should be a socket (28 cores)
  • can be used for OpenMP applications with large memory demands
  • OpenMPI does not work To use OpenMPI it is necessary to export the following environment variables, so that OpenMPI uses shared memory instead of Infiniband for message transport. properly here. For MPI applications: use IntelMPI !
    export OMPI_MCA_pml=ob1;?? export OMPI_MCA_mtl=^mxm
  • Use I_MPI_FABRICS=shm so that Intel MPI doesn't even consider using InfiniBand devices itself, but only shared-memory instead

Open for Testing

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