Hello Anthony, > On 29 Mar 2022, at 8:07 AM, Anthony Paul Haas <[email protected]> wrote: > > Hello, > > Is PTScotch required when using Petsc with Mumps to solve a (complex) linear > system of equations (direct solution)?
SCOTCH is not required when using MUMPS, it’s an optional dependency (odeps), see https://gitlab.com/petsc/petsc/-/blob/c9b04d1e75cd0716fe0f943e5da74654588dc53a/config/BuildSystem/config/packages/MUMPS.py#L49 <https://gitlab.com/petsc/petsc/-/blob/c9b04d1e75cd0716fe0f943e5da74654588dc53a/config/BuildSystem/config/packages/MUMPS.py#L49>. > The page https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html > <https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html> mentions > to use the following options for the configuration (see below) but the option > "--download-ptscotch" results in the error message "Unable to configure with > given options" Please send configure.log at [email protected] <mailto:[email protected]> Thanks, Pierre > From https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html > <https://petsc.org/release/docs/manualpages/Mat/MATSOLVERMUMPS.html> > ./configure --download-mumps --download-scalapack --download-parmetis > --download-metis --download-ptscotch > > > Thanks, > > Anthony > > > > >
