[Pw_forum] Parallelization

[Mofrad, Amir Mehdi (MU-Student)]

Dear QE users,


Can anyone tell me how to do scf calculations in parallel? I have done an scf calculation on one processor and now I want to do it on 2, 4, and 8 processors. One on processor it took 14 minutes to finish, however, when I run it on 2, 4, 8 it takes forever (it really never finishes). I use the following command " mpirun -np 4 pw.x -inp  INPUT_FILE |tee  OUTPUT_FILE ".


Any help would be thoroughly appreciated.



Best,


Amir M. Mofrad

University of Missouri
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