In the ls of the /usr/lib64 dir liblapack.a liblapack.so liblapack.so.3 liblapack.so.3.0 liblapack.so.3.0.3 libscalapack.so. <<<<<<<<<<<<<<<<<< libscalapack.so.1 libscalapack.so.1.0.0 Why libscalapack.so end with a dot??? Change to libscalapack.so !!!! Good luck... Roberto Nuñez Departamento de Matematicas Universidad de Sonora Mexico