The Open MPI for Exascale (OMPI-X) project was one of two in the Exascale Computing
Project (ECP) focused on advancing the MPI ecosystem. The OMPI-X team worked with …

Modern communication APIs provide increased ability to specify when, where, and how to
send data between processes. One recent innovation is fine-grained communication, where …

Graphics Processing Units have become the dominant type of accelerators for high-
performance computing and artificial intelligence. To support these systems, new …

Early‐bird communication is a communication/computation overlap technique that leverages
fine‐grained communication to improve application run‐time. Communication is divided …

Abstract Advances in High-Performance Computing (HPC) continue to improve the
performance of applications in Molecular Dynamics, AI, Deep Learning, and Large …

Modern HPC systems require efficient hybrid programming model to utilize their hardware
resources effectively. The Message Passing Interface (MPI) has accommodated next …

Many parallel applications rely on iterative stencil operations, whose performance are
dominated by communication costs at large scales. Several MPI optimizations, such as …