Hi I am trying to use mpich2 1.4.1 alongside Quantum Espresso 5.3. I have been using Windows 7 Enterprise version on Intel Xeon processor. I have followed instructions given in the following link to install mpich2 for windows 7: http://swash.sourceforge.net/online_doc/swashimp/node9.html However, when I am trying to execute QE in parallel formation I am getting the following error: Unknown option: -localonly I use the following line to run QE using mpich2: mpiexec -localonly -np 8 pw <abc.scf.inp> I don't know what's wrong here. I can run single execution using QE. However, I have not been able to run parallel execution. What should I do? Any help will be highly appreciated. Thanks Kanak -- _______________________________________ Kanak Datta Graduate Student Electrical Engineering and Computer Science University of MIchigan, Ann Arbor _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss