#researchatnecstlab - #NECSTFridayTalk

On Friday, 4.10.2024, we had a new talk in the #NECSTFridayTalk series by Ian Di Dio Lavore, PhD student at Dipartimento di Elettronica, Informazione e Bioingegneria.

In the following, you can find the details about the talk:
📌 Title: Exploring Architectural-Aware Affinity Policies in Modern HPC Runtimes

📌 Abstract: Modern commodity and High-Performance Computing (HPC) systems feature increasingly complex CPU architectures with higher core counts, NUMA domains, and hyperthreading. These varying hardware configurations, software stacks, and libraries make performance portability challenging, placing a significant burden on developers to optimize applications for each architecture. This work examines how hardware-dependent factors, such as locality and thread affinity, impact performance in modern CPUs. Using the Global Memory and Threading (GMT) runtime system, we evaluate existing and new affinity policies, explore NUMA configurations, and conduct scalability studies on three HPC clusters. Our findings highlight the critical role of proper runtime configurations in optimizing performance on complex architectures.

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