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

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.