Georg Hager's Blog

Random thoughts on High Performance Computing

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John McCalpin (“Dr. Bandwidth”): Memory Bandwidth and System Balance in HPC Systems – 2021 Update

Dr. John McCalpin gave an online talk in the NHR PerfLab seminar. John is known for his ubiquitous STREAM  benchmark (which is still a challenge to get right for some), but also for his deep insights on the microarchitecture and performance behavior of modern CPUs.

The slides can be downloaded here, and the video recording is available on YouTube: