Design of a portable implementation of partitioned point‐to‐point communication primitives

Abstract

The Message Passing Interface (MPI) has been the dominant message passing solution for scientific computing for decades. MPI point-to-point communications are highly efficient mechanisms for process-to-process communication. However, MPI performance when processes utilize multiple threads is slowed by concurrency protections in the MPI library. MPI's current thread level interface imposes these overheads throughout the library when thread safety is needed. While much work has been done to