MPI communication benchmarks

  • MPI benchmarks
    • DTU Elektro cluster
    • DTU HPC Cluster (Atea)
    • DTU HPC Cluster (IBM NeXtScale)
    • DTU Fotonano cluster
    • DTU Risø cluster (Jess)
    • SDU cluster (Abacus)

MPI benchmarks

Please note that the figures shown on this page are based on 2015-2017 clusters and may be outdated.

We display benchmarks of MPI communication on the main DTU clusters and the DeiC Abacus cluster at SDU.

The figures show the bandwidth of non-blocking MPI send and receive operations as a function of number of nodes for 1KB and 1MB message sizes, and as a function of the message size for 2 and max number of nodes.

Full curves are for all-to-all communication and dashed curves are for neighbor-to-neighbor communication in a 1D ring topology. The curves are the average values over 1000 independent trials; the minimum and maximum values envelop the shaded regions.

Click the figures to make them larger.

Note the logarithmic axes. Please also keep in mind that the shown behavior depends heavily on the current load on the cluster apart from the particular settings, wiring, and make of the infiniband cards.

DTU Elektro cluster

 DTU Atea HPC cluster

fig_mpi_atea3fig_mpi_atea4

fig_mpi_atea1 fig_mpi_atea2

DTU IBM HPC cluster

fig_mpi_hpc3fig_mpi_hpc4

fig_mpi_hpc1 fig_mpi_hpc2

DTU Fotonano cluster

fig_mpi_fotonano3fig_mpi_fotonano4

fig_mpi_fotonano1 fig_mpi_fotonano2

DTU Risø Jess cluster

fig_mpi_jess3fig_mpi_jess4

fig_mpi_jess1   fig_mpi_jess2

SDU Abacus cluster

fig_mpi_abacus3fig_mpi_abacus4

fig_mpi_abacus1fig_mpi_abacus2