petsc

The Portable, Extensible Toolkit for Scientific Computation (PETSc), is a suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations. It employs the Message Passing Interface (MPI) standard for all message-passing communication.

.. note::

To install the PETSc and petsc4py packages (mpi4py is optional but highly recommended) use::

 $ python -m pip install numpy mpi4py
 $ python -m pip install petsc petsc4py

.. tip::

You can also install the in-development versions with::

$ python -m pip install Cython numpy mpi4py
$ python -m pip install --no-deps https://gitlab.com/petsc/petsc/-/archive/main/petsc-main.tar.gz

Provide any PETSc ./configure options using the environmental variable PETSC_CONFIGURE_OPTIONS.

Do not use the PETSc ./configure options --with-cc, --with-cxx, --with-fc, or --with-mpi-dir. To set the MPI compilers use the environmental variables MPICC, MPICXX, MPIFORT. If mpi4py is installed the compilers will be obtained from that installation and MPICC, MPICXX, MPIFORT will be ignored.