On 01/03/2011 04:02 AM, Padma TAN wrote: > Where can I download mpich2-devel installation file? Do you mean the source tarball or a binary package? You can find download information for MPICH2 here: http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji