MARVIN Cluster

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Revision as of 08:35, 29 May 2020 by Shl1 (talk | contribs)
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This is a private cluster.

Hardware

  • Head node: marvin.cac.cornell.edu.
  • access modes: ssh
  • OpenHPC v1.3.8 with CentOS 7.8
  • 86 compute nodes with Dual 6-core X5670 CPUs @ 3 GHz, Hyperthreaded, 24 GB of RAM; 3 high memory nodes with 96 GB of RAM
  • Cluster Status: Ganglia.
  • "Why use a temporary directory?"
  • Submit HELP requests: Help OR by sending email to: help@cac.cornell.edu

File Systems

Home Directories

  • Path: ~

User home directories are hosted on the head node and exported to the compute nodes via NFS. Unless special arrangements are made, data in user home directories are NOT backed up.

Globus Access

User home directories can be accessed on Globus. Under "File Manager" tab in Globus web GUI:

  1. Access "cac#marvin" endpoint.
  2. Authenticate using your CAC user name and password if prompted.

Scheduler/Queues

  • The cluster scheduler is Slurm. See Slurm documentation page for details.
  • Note: hyperthreading is enabled on the cluster, so Slurm considers each physical core to consist of two logical CPUs. See the slurm options section for using the correct options for your job.
  • Partitions:
Name Description Time Limit
viz 3 visualization Ensight Servers, each has 96GB RAM none
normal (default) all nodes except for those in viz queue none
all all cluster nodes none

Software

Software Path Notes
*GNU Compilers 8.3.0 /opt/ohpc/pub/compiler/gcc/8.3.0 module load gnu8/8.3.0
*openmpi 3.1.4 /opt/ohpc/pub/mpi/openmpi3-gnu8/3.1.4 or /opt/ohpc/pub/mpi/openmpi3-intel/3.1.4 module load openmpi3/3.1.4
Intel Parallel Studio XE 2020.1.217 /opt/ohpc/pub/compiler/intel/2020/ module swap gnu8 intel/20.1.2017
Intel MPI 2020.1.217 /opt/ohpc/pub/compiler/intel/2020/compilers_and_libraries_2020.1.217/linux/mpi module load impi/2020.1.217
mvapich2 2.3.2 /opt/ohpc/pub/mpi/mvapich2-gnu/2.3.2 or /opt/ohpc/pub/mpi/mvapich2-intel/2.3.2 module load mvapich2/2.3.2
fftw 3.3.8 /opt/ohpc/pub/libs/gnu8/openmpi3/fftw/3.3.8 or /opt/ohpc/pub/libs/gnu8/mvapich2/fftw/3.3.8 module load fftw/3.3.8
hypre 2.18.1 /opt/ohpc/pub/libs/gnu8/openmpi3/hypre/2.18.1, /opt/ohpc/pub/libs/gnu8/impi/hypre/2.18.1, /opt/ohpc/pub/libs/intel/openmpi3/hypre/2.18.1, or /opt/ohpc/pub/libs/intel/impi/hypre/2.18.1 module load hypre/2.18.1
ensight 10.1.4a /opt/ohpc/pub/apps/ensight/10.1.4a module load ensight/10.1.4a
VisIt 3.0.1 /opt/ohpc/pub/apps/visit/3.0.1/bin module load visit/3.0.1
python 3.8.3 /opt/ohpc/pub/utils/python/3.8.3 module load python/3.8.3