The International Conference for High Performance Computing, Networking, Storage, and Analysis
The International Conference for High Performance Computing, Networking, Storage, and Analysis
Poster Type: Research Posters
Author: Solomon Bekele (Argonne National Laboratory (ANL)), Swann Perarnau (Argonne National Laboratory (ANL)), Brice Videau (Argonne National Laboratory (ANL))
Supervisor:
Abstract: In this work, we evaluate the range of performance-energy tradeoffs achievable by the independent application of node-level power capping and DVFS controls on the Aurora supercomputer. We then analyze the default uncore frequency behavior under constrained node power, revealing inefficiencies—particularly in memory-bound workloads—where the uncore is under-provisioned despite high demand. To address this, we propose U-PullUp, a lightweight uncore DVFS control strategy designed to operate alongside a node-level power cap. U-PullUp complements the default policy by increasing the frequency of the uncore when its utilization is high. Our approach yields up to 34.2% energy savings under a power limit.
Best Poster Finalist (BP): no
Poster: PDF
Poster Summary: PDF