Zeon

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Server is zeon.physik.uni-due.de, home directories are the same.

Queueing system = Slurm

  • sinfo shows overall load and available queues (partitions). The default one is marked with *.
  • squeue shows running jobs.
  • simplest submission: sbatch -nn script-name
  • scancel job-id kills job.

Intel oneAPI

Intel compilers, MKL and MPI are installed, must be selected via the module system:

module use /opt/intel/oneapi/modulefiles (unless you include that directory in your MODULEPATH)

  • module avail lists the installed modules, relevant are:
    • compiler/latest → ifort, icpc, icc, ...
    • mpi/latest → mpirun, mpiifort, mpiicpc, mpiicc, ...
    • mkl/latest
  • module load ... loads a module.

Inside a shell script (bash), you have to do shopt -s expand_aliases before being able to use the module command.

Pitfalls

  • ifort/mpiifort: When compiling with -i8, you also have to link with -i8 (cf. also manual).

OpenMPI

  • The setting export OMPI_MCA_pml=ucx is necessary to prevent a "failed OFI Libfabric library call".