Los Alamos National Laboratory's (LANL) has a diverse set of High Performance Computing codes. Analysis of many of these codes indicate they are heavily memory bound with sparse memory accesses. High Bandwidth Memory (HBM) has proven a significant advancement in improving the performance of these codes but the roadmap for major (step function) improvements in memory technologies is unclear. Addressing this challenge will require a renewed focus on high performance memory and processor technologies that take a more aggressive and holistic view of advancements in ISA, microarchitecture, and memory controller technologies. Beyond scientific simulations, advancements in performance of sparse memory accesses will benefit graph analysis, DLRM inference, and database workloads.
Galen Shipman
Galen Shipman is a computer scientist at Los Alamos National Laboratory (LANL). His interests include programming models, scalable runtime systems, and I/O. As Chief Architect he leads architecture and technology of Advanced Technology Systems (ATS) at LANL. He has led performance engineering across LANL’s multi-physics integrated codes and the advancement and integration of next-generation programming models such as the Legion programming system as part of LANL's next-generation code project, Ristra. His work in storage systems and I/O is currently focused on composable micro-services as part of the Mochi project. His prior work in scalable software for HPC include major contributions to broadly used technologies including the Lustre parallel file system and Open MPI.