In my last post, I talked about the so-called eager RDMA optimization, and its effects on resource consumption vs. latency optimization.
Let’s talk about another optimization: shared receive queues.
Shared receive queues are not a new idea, and certainly not exclusive to MPI implementations. They’re a way for multiple senders to send to a single receiver while only consuming resources from a common pool.
Tags: HPC, mpi, network model, RDMA