Operating System Support For Overlapping-Isa Heterogeneous Multi-Core Architectures
HPCA-16 2010: SIXTEENTH INTERNATIONAL SYMPOSIUM ON HIGH-PERFORMANCE COMPUTER ARCHITECTURE, PROCEEDINGS(2010)
摘要
A heterogeneous processor consists of cores that are asymmetric in performance and functionality. Such a design provides a cost-effective solution for processor manufacturers to continuously improve both single-thread performance and multi-thread throughput. This design, however, faces significant challenges in the operating system, which traditionally assumes only homogeneous hardware. This paper presents a comprehensive study of OS support for heterogeneous architectures in which cores have asymmetric performance and overlapping, but non-identical instruction sets. Our algorithms allow applications to transparently execute and fairly share different types of cores. We have implemented these algorithms in the Linux 2.6.24 kernel and evaluated them on an actual heterogeneous platform. Evaluation results demonstrate that our designs efficiently manage heterogeneous hardware and enable significant performance improvements for a range of applications.
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关键词
formative evaluation,linux,registers,multi threading,algorithm design and analysis,operating system,global positioning system,hardware,cost effectiveness,computer architecture
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