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PETSc

PETSc is a suite of parallel tools for solution of partial differential equations. PETSc is developed at Argonne National Laboratory and is freely available under a BSD 2-clause license.

Build

  • module load petsc

Applications may be linked against PETSc by loading the petsc module and using the compiler wrappers cc, CC, and ftn in the usual way. Details of options introduced by the compiler wrappers can be examined via, e.g., 

$ cc --cray-print-opts

PETSC is configured with Metis, Parmetis, and Scotch orderings, and to support HYPRE, MUMPS, SuperLU, and SuperLU-DIST. PETSc is compiled without OpenMP.

The petsc module defines the environment variable PETSC_DIR as the root of the installation if this is required.

Version history

  • Module petsc/3.18.5 installed as default May 2023 (PE 22.12)
  • Module petsc/3.14.2 recompiled May 2023 (PE 22.12)

Note: PETSc has a number of dependencies; where applicable, the newer version of PETSc depends on the newer module version of each relevant dependency. Check module list to be sure.

  • Module petsc/3.14.2 installed October 2021 (PE 21.04)
  • Module petsc/3.13.3 installed January 2021

Known issues: PETSc is not currently available for PrgEnv-aocc. There is no HYPRE support in this version.

Compile your own version

It is possible to follow the steps used to build the current version on Archer2. These steps are codified at the Archer2 github repository and include a number of dependencies to be built in the correct order: 

$ git clone https://github.com/ARCHER2-HPC/pe-scripts.git
$ cd pe-scripts
$ git checkout modules-2012-12
$ ./sh/tpsl/metis.sh --prefix=/path/to/install/location
$ ./sh/tpsl/parmetis.sh --prefix=/path/to/install/location
$ ./sh/tpsl/hypre.sh --prefix=/path/to/install/location
$ ./sh/tpsl/scotchv7.sh --prefix=/path/to/install/location
$ ./sh/tpsl/mumps.sh --prefix=/path/to/install/location
$ ./sh/tpsl/superlu.sh --prefix=/path/to/install/location
$ ./sh/tpsl/superlu-dist.sh --prefix=/path/to/install/location

$ module load cray-hdf5
$ ./sh/petsc.sh --prefix=/path/to/install/location
The --prefix option indicating the install directory should be the same in all cases. See the Archer2 github repository for further details (and options). This will compile version 3.18.5 against the latest module versions of each dependency.

Resources

PETSc home page

Current PETSc documentation (HTML)