This directory contains the MLD2P4 set of preconditioners. developed by Salvatore Filippone Pasqua D'Ambra Daniela di Serafino To compile: 0. Unpack the tar file in a directory of your choice (preferrably outside the main PSBLAS directory). 1. Edit Make.inc and point PSBLASDIR to the main PSBLAS directory; this must be an ABSOLUTE pathname 2. Uncomment the variable definition for SLU, SLUDist, UMFPACK as desired, and fix the installation directory/library names. Again, directories must be ABSOLUTE pathnames.