VLBI HPC cluster

    Version as of 19:49, 1 Jul 2022

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    General characteristics

    to be updated!

    • Users need to get an account first (see W. Alef or H. Rottmann).
    • Users should log into frontend.
    • /home on the cluster is where the home directories reside. /home is visible to all nodes.
    • login to nodes works from frontend without password
    • All nodes have 16 GB of memory
    • Each node has a scratch disk (~100 GB)
    • for large amounts of disk space two 20 TB Raid are available (mounted under /data and /data1). If you need space, a directory can be created for you.
    • Software available:
      • gcc 4.2.1 (g++, gfortran)
      • gcc 3.3.5 (g++, gfortran; under /cluster/gcc/3.3.5/bin/)
      • OpenMPI, MPICH (OpenMPI automatically uses Infiniband)
      • Intel Performance LIbrary
      • The Torque batch system with load balancing could be configured and enabled if need arises.
    • One 20 TB raid for geodesy (IO03)
    • One 20 TB raid and one 40 TB raid for pulsar data reduction each with 12 cores. (IO04 and IO05)
    • 4 x 40 TB raids for LOFAR data reduction each with 12 cores. (IO06-IO09)

    Cluster Booking

    Please contact the VLBI correlator operator (Tel. 220, email: hsturm) if you would like to allocate time on the cluster.

    Defective nodes: none

    Available nodes: 1 - 68

    Diskspace: to be negotiated

    Ask Helge Rottmann.

    Cluster RAIDS

     

    RAID number Size in TB VLBI
    1 162 162
    2 162 162
    3 73 73
    4 20  
    5 40  
    6 40  
    7 40  
    8 40  
    9 40  
    10 46 46
    11 82 82
    12 82 82
    13 66 66
    14 66 66
    Total disk size 959 739

    Cluster Layout

    ClusterRack.jpg

     

      Infiniband Switch 4x Infiniband Switch 4x Infiniband Switch
    IO11 / 82 TB, IO12 / 82 TB   nodes 29 - 48 Nodes 1 - 28
    IO10 / 46 TB      
    IO05 - IO09 / 40 TB Nodes 53 - 68 4 CASA nodes IO01 / 164 TB, IO02 / 164 TB

    IO10 / 52 TB, IO01 /20 TB           IO03&04 / 20 TB                  Nodes 41-60, IO01 / 20 TB,            Nodes 1 - 40
      IO05 - IO09 / 40 TB                     FXmanager                          Appliance, Frontend,
                                                          IO02 / 20 TB                         Infiniband switch

    More information about the cluster can be found on the intranet: http://intra.mpifr-bonn.mpg.de/div/v...nal/index.html