[Pw_forum] Running Example 01 (Parallel Running on a single PC with 3 cores, AMD, LAM-MPI)

[Ngoc Linh Nguyen]

>  I have tested my mpif77 and mpicc and I think that they works well , 
but I feel that the problem is related to the MPI ! but I can not find 
it. My QE has been compiled well by mpif77 and all binaries created well.

Here, I wonder that why don't you use mpif90. In the Manual of QE, you 
can find out that the 
parallel fortran compiler should be mpif90. Therefore, I think it should 
be updated from mpif77 to mpif90.

>I am not sure that LAM-MPI recognizes the 3 cores of a single PC or not 
? I am comfused ! another amazing paradox is that once I ran this example.

QUANTUM ESPRESSO is known to work with at least two of the major MPI 
implementations (MPICH, LAM-MPI), plus with the newer MPICH2 and OpenMPI 
implementation. Therefore, if you have not been sure that the MPI 
compiler works or not, why don't you try by running some simple examples 
firstly.

Good luck,

Linh
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