Nearly symmetric multi-core processors

Reif S, Herzog B, Hügel F, Hönig T, Schröder-Preikschat W (2020)

Publication Type: Conference contribution

Publication year: 2020

Publisher: Association for Computing Machinery

Pages Range: 42-49

Conference Proceedings Title: APSys 2020 - Proceedings of the 2020 ACM SIGOPS Asia-Pacific Workshop on Systems

Event location: Tsukuba

ISBN: 9781450380690

DOI: 10.1145/3409963.3410486

Abstract

Multi-core processors are commonplace and continue to require rethinking (not only) in system software development. It is still difficult to operate several functionally identical computing cores efficiently. One misconception is to assume that functionally identical cores of a multi-core processor will behave non-functionally alike, especially at the speed at which they execute the same non-sequential program. We show that considerable deviations in the non-functional behaviour of otherwise identical cores are anything but unusual, and can be expected to vary by more than 20%. The paper documents the applied measurement methodology, discusses measurement results obtained, and addresses consequences for the coordinated operation of logically connected concurrent threads in the context of Linux.

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How to cite

APA:

Reif, S., Herzog, B., Hügel, F., Hönig, T., & Schröder-Preikschat, W. (2020). Nearly symmetric multi-core processors. In APSys 2020 - Proceedings of the 2020 ACM SIGOPS Asia-Pacific Workshop on Systems (pp. 42-49). Tsukuba, JP: Association for Computing Machinery.

MLA:

Reif, Stefan, et al. "Nearly symmetric multi-core processors." Proceedings of the 11th ACM SIGOPS Asia-Pacific Workshop on Systems, APSys 2020, Tsukuba Association for Computing Machinery, 2020. 42-49.

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