Automatic Calibration of Performance Models on Heterogeneous Multicore Architectures
Multicore architectures featuring specialized accelerators are getting an increasing amount of attention, and this success will probably influence the design of future High Performance Computing hardware. Unfortunately, programmers are actually having a hard time trying to exploit all these heterogeneous computing units efficiently, and most existing efforts simply focus on providing tools to offload some computations on available accelerators. Recently, some runtime systems have been designed that exploit the idea of scheduling – as opposed to offloading – parallel tasks over the whole set of heterogeneous computing units. Scheduling tasks over heterogeneous platforms makes it necessary to use accurate prediction models in order to assign each task to its most adequate computing unit . A deep knowledge of the application is usually required to model per-task performance models, based on the algorithmic complexity of the underlying numeric kernel.
We present an alternate, auto-tuning performance prediction approach based on performance history tables dynamically built during the application run. This approach does not require that the programmer provides some specific information. We show that, thanks to the use of a carefully chosen hash-function, our approach quickly achieves accurate performance estimations automatically. Our approach even outperforms regular algorithmic performance models with several linear algebra numerical kernels.
- Automatic Calibration of Performance Models on Heterogeneous Multicore Architectures
- Book Title
- Euro-Par 2009 – Parallel Processing Workshops
- Book Subtitle
- HPPC, HeteroPar, PROPER, ROIA, UNICORE, VHPC, Delft, The Netherlands, August 25-28, 2009, Revised Selected Papers
- pp 56-65
- Print ISBN
- Online ISBN
- Series Title
- Lecture Notes in Computer Science
- Series Volume
- Series ISSN
- Springer Berlin Heidelberg
- Copyright Holder
- Springer-Verlag Berlin Heidelberg
- Additional Links
- Industry Sectors
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- Editor Affiliations
- 16. Insitute for Applied Mathematics, Delft University of Technology
- 17. Scaledinfra technologies GmbH
- 18. VTT
- 19. Technische Universität Dresden
- 20. Institute for Computer Science, Technical University of Innsbruck
- 21. Instituto Superior Técnico/INESC-ID.
- 22. Jülich Supercomputing Centre
- Author Affiliations
- 23. INRIA Bordeaux, LaBRI, University of Bordeaux,
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