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cs.DC2026
Co-Design and Evaluation of a CPU-Free MPI GPU Communication Abstraction and Implementation
Patrick G. Bridges, Derek Schafer, Jack Lange +7
Removing the CPU from the communication fast path is essential to efficient GPU-based ML and HPC application performance. However, existing GPU communication APIs either continue t…
cs.DC2025
Leveraging Caliper and Benchpark to Analyze MPI Communication Patterns: Insights from AMG2023, Kripke, and Laghos
Grace Nansamba, Evelyn Namugwanya, David Boehme +6
We introduce ``communication regions'' into the widely used Caliper HPC profiling tool. A communication region is an annotation enabling capture of metrics about the data being com…
cs.DC2024
Understanding GPU Triggering APIs for MPI+X Communication
Patrick G. Bridges, Anthony Skjellum, Evan D. Suggs +2
GPU-enhanced architectures are now dominant in HPC systems, but message-passing communication involving GPUs with MPI has proven to be both complex and expensive, motivating new ap…