MPI usage patterns are changing as applications move towards fully-multithreaded
runtimes. However, the impact of these patterns on MPI message matching is not well …

One-sided communication is crucial to enabling communication concurrency. As core counts
have increased, particularly with many-core architectures, one-sided (RMA) communication …

Proceedings of the 23rd European MPI Users' Group Meeting: Towards millions of
communicating threads Page 1 Towards millions of communicating threads Hoang-Vu …

Asynchronous programming models (APM) are gaining more and more traction, allowing
applications to expose the available concurrency to a runtime system tasked with …

Asynchronous task-based programming models are gaining popularity to address the
programmability and performance challenges in high performance computing. One of the …

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 …

Load balancing is often a challenge in task‐parallel applications. The balancing problems
are divided into static and dynamic.“Static” means that we have some prior knowledge about …

Contemporary parallel scientific codes often rely on message passing for inter-process
communication. However, inefficient coding practices or multithreading (eg, via …

As we approach exascale, computational parallelism will have to drastically increase in
order to meet throughput targets. Many‐core architectures have exacerbated this problem by …

A broad range of physical phenomena in science and engineering can be explored using
finite difference and volume based application codes. Incorporating Adaptive Mesh …