Jacob Faibussowitsch <[email protected]> writes: >> Yes on all points regarding MPI and BLAS/Lapack. I recommend installing >> a current MPICH and/or Open MPI system-wide, preferably hooked up to >> ccache (see replies to this thread: >> https://lists.mcs.anl.gov/pipermail/petsc-dev/2020-January/025505.html >> <https://lists.mcs.anl.gov/pipermail/petsc-dev/2020-January/025505.html>), >> as well as BLAS/Lapack system-wide. It's the other packages that are >> more likely to depend on int/scalar configuration, but even many of >> those (HDF5, SuiteSparse, etc.) aren't built specially for PETSc. > > Is the home-brew MPICH, openblas, lapack sufficient here? Or is it > recommended to build all three from source?
It looks current. OSX (or Xcode?) ships with a good BLAS/Lapack so you shouldn't need install anything, but OpenBLAS or BLIS (faster) from Homebrew should be fine.
