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Design and Implementation of a Compiler Framework for Helper Threading on Multi-core Processors

9 years 2 months ago
Design and Implementation of a Compiler Framework for Helper Threading on Multi-core Processors
Helper threading is a technique that utilizes a second core or logical processor in a multi-threaded system to improve the performance of the main thread. A helper thread executes in parallel with the main thread that it attempts to accelerate. In this paper, the helper thread merely prefetches data into a shared cache and does not incur any other programmer visible effects. Helper thread prefetching has been proposed as a viable solution in various scenarios where it is difficult to prefetch efficiently within the main thread itself. This paper presents our helper threading experience on SUN’s second dual-core SPARC microprocessor, the UltraSPARC IV+. The two cores on this processor share an on-chip L2 and an off-chip L3 cache. We present a compiler framework to automatically construct helper threads and evaluate our scheme on the UltraSPARC IV+ processor. Our preliminary results using helper threads on the SPEC CPU2000 suite show gains of up to 22% on programs that suffer substa...
Yonghong Song, Spiros Kalogeropulos, Partha Tiruma
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where IEEEPACT
Authors Yonghong Song, Spiros Kalogeropulos, Partha Tirumalai
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