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Intro
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AVX2/AVX-512 and Fairness
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Power-Limited Computing
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Example: AVX2 AVX-512
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Unfairness in Existing Schedulers
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Rethinking Fairness
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Frequency Reduction Compensation
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Estimating the Frequency Drop
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Detecting AVX2 AVX-512
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Implementation
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Evaluation Setup
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Remaining Unfairness (AVX-512)
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Overhead
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Summary
Description:
Explore a conference talk from USENIX ATC '21 that addresses fair scheduling for AVX2 and AVX-512 workloads. Delve into the challenges posed by power-limited CPUs and their impact on performance isolation when executing complex SIMD instructions. Learn about a novel approach to modify existing schedulers, aiming to restore fairness in scenarios involving power-intensive tasks. Discover techniques for identifying AVX2/AVX-512 tasks responsible for frequency reduction and adjusting CPU time accounting to prioritize affected processes. Examine the effectiveness of this prototype in reducing performance disparities between non-AVX and AVX-512 tasks from 24.9% to 5.4% on average. Gain insights into power-limited computing, frequency reduction compensation, and methods for detecting AVX2/AVX-512 usage, along with an evaluation of the implementation's overhead and remaining challenges.

Fair Scheduling for AVX2 and AVX-512 Workloads

USENIX
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