METIS is written in C by using int and when one uses a solver on a 64-bit system that employs 8-byte integers this must be changed. Recently I have compiled MUMPS with -i8 and this was exactly this case. The newest version of METIS seems have an option to compile METIS with long but it […]

When solving a system of linear equations with a sparse matrix by the direct method, it is crucial to run a reordering algorithm to reduce fill-in in the factor. Without this, it just does not work. METIS is a reordering algorithm developed by Prof Karypis at the University of Minnesota – Karypis Lab. It is […]