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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Hardware Support for Multithreaded Execution of Loops with Limited Parallelism
verfasst von : Georgios Dimitriou, Constantine Polychronopoulos
Erschienen in: Advances in Informatics
Verlag: Springer Berlin Heidelberg
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Loop scheduling has significant differences in multithreaded from other parallel processors. The sharing of hardware resources imposes new scheduling limitations, but it also allows a faster communication across threads. We present a multithreaded processor model, Coral 2000, with hardware extensions that support Macro Software Pipelining, a loop scheduling technique for multithreaded processors. We tested and evaluated Coral 2000 on a cycle-level simulator, using synthetic and integer SPEC benchmarks. We obtained speedups of up to 30% with respect to highly optimized superblock-based schedules on loops that exhibit limited parallelism.