[mpich-discuss] How to spawn a non-MPI process with MPI_Comm_spawn
Mccall, Kurt E. (MSFC-EV41)
kurt.e.mccall at nasa.gov
Tue Jan 7 10:07:32 CST 2020
Issue created. Can you suggest any other way to launch non-MPI processes?
From: Raffenetti, Kenneth J. <raffenet at mcs.anl.gov>
Sent: Tuesday, January 7, 2020 9:32 AM
To: discuss at mpich.org
Cc: Mccall, Kurt E. (MSFC-EV41) <kurt.e.mccall at nasa.gov>
Subject: [EXTERNAL] Re: [mpich-discuss] How to spawn a non-MPI process with MPI_Comm_spawn
We do not support such a key at this time, but it seems reasonable to add. Could you create an issue on our GitHub?
On 1/6/20 9:50 AM, Mccall, Kurt E. (MSFC-EV41) via discuss wrote:
> I'm attempting to use MPICH to manage a number of non-MPI processes.
> The latter call system() and fork(), which as I understand it may
> cause undefined behavior if they were spawned as MPI processes. How
> do I use
> MPI_Comm_spawn() to launch these processes?
> For example, OpenMpi has a key for the "info" field named
> "ompi_non_mpi", which causes a non-MPI process to be spawned. Is
> there something similar in MPICH?
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