MPI_RSM_SBPOOLSIZE

If set, MPI_RSM_SBPOOLSIZE is the requested size in bytes of each RSM send buffer pool. An RSM send buffer pool is the pool of buffers on a node that a remote process would use to send to processes on the node. A multiple of 1024 must be used. If unset, then pools of buffers are dedicated to connections rather than to senders.