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doku:mpiversion [2014/06/18 08:15] – created irdoku:mpiversion [2017/08/31 13:49] (current) – [General recommendations] ir
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 +====== MPI ======
 +
 ==== MPI Version ==== ==== MPI Version ====
  
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 Modifications will be active after logging in again. Modifications will be active after logging in again.
  
 +==== General recommendations ====
 +To make sure that the MPI communication happens via the infiniband fabric, please use the following settings in your job-script and/or in your ''.bashrc'' file:
 +<code>
 +export I_MPI_DAT_LIBRARY=/usr/lib64/libdat2.so.2
 +export OMP_NUM_THREADS=1
 +export I_MPI_FABRICS=shm:dapl
 +export I_MPI_FALLBACK=0
 +export I_MPI_CPUINFO=proc
 +export I_MPI_PIN_PROCESSOR_LIST=1,14,9,6,5,10,13,2,3,12,11,4,7,8,15,0
 +export I_MPI_JOB_FAST_STARTUP=0
 +</code>
 +
 +==== Jobs with more than 1024 cores ====
 +[[doku:large|Jobs with more than 1024 cores]]
  • doku/mpiversion.1403079304.txt.gz
  • Last modified: 2014/06/18 08:15
  • by ir