Parallelization of While Loops in Nested Loop Programs for Shared-Memory Multiprocessor Systems

Geuns, Stefan J. and Bekooij, Marco J.G. and Bijlsma, Tjerk and Corporaal, Henk (2011) Parallelization of While Loops in Nested Loop Programs for Shared-Memory Multiprocessor Systems. In: Design, Automation & Test in Europe Conference & Exhibition, DATE 2011, 14-18 March 2011, Grenoble, France.

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Abstract:	Many applications contain loops with an undetermined number of iterations. These loops have to be parallelized in order to increase the throughput when executed on an embedded multiprocessor platform. This paper presents a method to automatically extract a parallel task graph based on function level parallelism from a sequential nested loop program with while loops. In the parallelized task graph loop iterations can overlap during execution. We introduce the notion of a single assignment section such that we can exploit single assignment to overlap iterations of the while loop during the execution of the parallel task graph. Synchronization is inserted in the parallelized task graph to ensure the same functional behavior as the sequential nested loop program. It is shown that the generated parallel task graph does not introduce deadlock. A DVB-T radio receiver where the user can switch channels after an undetermined amount of time illustrates the approach.
Item Type:	Conference or Workshop Item
Copyright:	© 2011 IEEE
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Computer Architecture for Embedded Systems (CAES)
Link to this item:	http://purl.utwente.nl/publications/78154
Official URL:	http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5763118
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