Hi, These lines are very strange: >> $ export FC="/usr/lib/lam/bin/mpif90" >> >> $ export FC="/usr/lib/lam/bin/mpicc" >> >> $ export FC="/usr/lib/lam/bin/mpicxx" you should export FC, CC, and CXX (actually this last one is useless, as we do not use c++), not 3 times FC. hope this helps, Miguel