• all nodes: Dual socket SandyBridge E5-2630L, with 64 GB @1333 RAM per node. BIOS: HT disabled, performance mode, Minimum C state: C6

  • all nodes: 10 Gb iWARP Ethernet card: used for data plane (MPI) and control plane (CERN public network, AFS)

  • lxbrf61c08 node has a directory /data which is NFS exported to all compute nodes. Mounted as /data on all compute nodes.

  • front-end node: lxbrf61c08

  • compute nodes: lxbrf61c01 lxbrf59c03 lxbrf61c04 lxbrf61c05 lxbrf61c06 lxbrf61c07 lxbrf57c02 lxbrf57c04 lxbrf57c05 lxbrf57c06 lxbrf57c07 lxbrf57c08

Measurement setup

  • MPI libary: mvapich2-1.8-1.slc6.x86_64
  • MPI benchmarks: osu-micro-benchmarks-4.0.1


  • OSU MVAPICH2 benchmark: osu_latency

  • matrix diagonal: intra-node MPI (shared memory)
  • non-diagonal: inter-node MPI (10 Gb iWARP)

  • techlab_iwarp_latency_measeurement_mvapich2.png:

  • techlab_iwarp_latency_measeurement_mvapich2_2.png:

Bandwidth (unidirectional)

  • OSU MVAPICH2 benchmark: osu_bw

  • matrix diagonal: intra-node MPI (shared memory)
  • non-diagonal: inter-node MPI (10 Gb iWARP)

  • techlab_iwarp_bw_measeurement_mvapich2.png:

  • techlab_iwarp_bw_measeurement_mvapich2_2.png:
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Topic revision: r1 - 2016-05-26 - AritzBrosaIartza
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