Exploring and Predicting the Architecture/Optimising Compiler Co-design Space

Christophe Dubach, Timothy M. Jones, Michael F.P. O'Boyle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

Embedded processor performance is dependent on both the underlying architecture and the compiler optimisations applied. However, designing both simultaneously is extremely difficult to achieve due to the time constraints designers must work under. Therefore, current methodology involves designing compiler and architecture in isolation, leading to sub-optimal performance of the final product.

This paper develops a novel approach to this co-design space problem. For any microarchitectural configuration we automatically predict the performance that an optimising compiler would achieve without actually building it. Once trained, a single run of -O1 on the new architecture is enough to make a prediction with just a 1.6% error rate. This allows the designer to accurately choose an architectural configuration with knowledge of how an optimising compiler will perform on it. We use this to find the best optimising compiler/architectural configuration in our co-design space and demonstrate that it achieves an average 13% performance improvement and energy savings of 23% compared to the baseline, leading to an energy-delay (ED) value of 0.67.
Original languageEnglish
Title of host publicationCASES '08 Proceedings of the 2008 international conference on Compilers, architectures and synthesis for embedded systems
Place of PublicationNew York, NY, USA
PublisherACM
Pages31-40
Number of pages10
ISBN (Print)978-1-60558-469-0
DOIs
Publication statusPublished - Oct 2008

Keywords / Materials (for Non-textual outputs)

  • architecture/compiler co-design, design-space exploration, performance prediction

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