Afraid not. You could start a single process, and then have that process call MPI_Comm_spawn to launch the rest of them

On Jun 6, 2013, at 7:54 AM, José Luis García Pallero <> wrote:


I'm newbie in the use of MPI, so probably I ask some stupid question (or previously asked, but in this case I have searched in the archive and I haven't found anything):

Exists any other way than -np X in order to pass the number of processes to start for an MPI program? I mean a function of the style MPI_Set_Number_Processes() or similar


José Luis García Pallero
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