This directory contains definition files and scripts used to build a Singularity container with PISM.

Run make to build this container (pism.sif).

The build process is split into several steps:

1. Install libraries needed to support network (InfiniBand) hardware (output: openmpi/network.sif).
2. Build Open MPI built using openmpi/network.sif (output: openmpi/openmpi.sif).
3. Install build tools needed by subsequent steps (output: build.sif).
4. Install PETSc (output: petsc.sif).
5. Install parallel I/O libraries (NetCDF, PnetCDF, NCAR ParallelIO) (output: io.sif)
6. Install PISM (output: pism.sif).

We use (old!) CentOS 7 as the base Linux distribution because we currently need to use glibc that supports an ancient Linux kernel (2.6.32).

To run PISM within this container, do one of:

1. To run on one node:

    singularity exec pism.sif mpirun -n XX pismr ...
   

2. To run on multiple nodes, install Open MPI (the container uses version 4.1.2, but any version since 3.0.3 should work), then

    mpirun -n XX --hostfile YY singularity exec pism.sif pismr ...