Presentation
Characterizing Performance and Energy Trade-Offs on the Aurora Supercomputer
DescriptionIn 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.
Event Type
Research and ACM SRC Posters
TimeThursday, 20 November 20258:00am - 5:00pm CST
LocationSecond Floor Atrium
Archive
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