Just to clarify, "-disable-auto-cleanup" is an option you should pass to mpiexec, not to configure. -d On Nov 4, 2010, at 11:05 AM, Jayesh Krishna wrote: > As an alternative you can try installing MPICH2 (configure/make/make install) on Cygwin (when configuring MPICH2 pass "--disable-auto-cleanup" as per Darius's suggestion).