libmumps-seq-dev - 5.1.2-4+b2 main

MUMPS implements a direct solver for large sparse linear systems, with a
particular focus on symmetric positive definite matrices. It can
operate on distributed matrices e.g. over a cluster. It has Fortran and
C interfaces, and can interface with ordering tools such as Scotch.
.
This package is built the MUMPS libseq dummy sequential MPI library.
Unless you know that you specifically need this, then you almost
certainly want the libmumps-dev package.