[mpich-discuss] MPI_Comm_spawn / MPI_Info question

Christoph Sprenger csprenger at wetafx.co.nz
Sat Sep 15 21:23:39 CDT 2012


Hi,

I've been trying to get MPI_Info to work with the Spawn interface, but 
seems like the env vars aren't supplied to the new processes.
I've been searching the docs and source, but can't find the list of 
hints for mpich2, so i am not sure if "envlist" is the right key for the 
mpd.
not sure if i missed the obvious. is there an overview somewhere of all 
the reserved keys ( eg envall,... )



MPI_Info info;
MPI_Info_create(&info);
MPI_Info_set(info, "envlist", "CUSTOM_VAR");

...
MPI_Comm_spawn(argv[0], &argv[1] , n, info, 0, MPI_COMM_WORLD, 
&intracomm, MPI_ERRCODES_IGNORE);


i currently use mpich2-1.2.1


Cheers,
Christoph




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