[mpich-discuss] Process-to-core binding in MPI_Comm_spawn

[Gonzalo Martín Cruz]

Hi all,

I am working with MPI_Comm_spawn to launch dynamic processes in my MPI
application and I would like to use the process-to-core binding allocation
strategy in processes spawned dynamically.

I already know that it is possible to set the "host" key in the MPI_Info
parameter of the MPI_Comm_spawn call to spawn the process in a specific
host. However, I would like to know how to bound a dynamic process to a
specific processor core.

I tried passing to MPI_Comm_spawn the "host" info key as "compute-node-X
binding:user=4", but it does not work and the process goes to any core
randomly.

Thank you very much,

Regards,

Gonzalo.
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