Author(s)

Weixia XU, Qiang DOU, Ying ZHANG, Gen LI, Xuejun YANG

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Compared with other stream applications, scientific stream programs are usually bound by memory accesses. Reusing streams across different iterations, i.e. loop-carried stream reuse, can effectively improve the SRF locality, thus reducing memory accesses greatly. In the paper, we first present the algorism identifying loop-carried stream reuse and that exploiting the reuse after analyzing scientific computing applications. We then perform several representative microbenchmarks and scientific stream programs with and without our optimization on Isim, a cycle-accurate stream processor simulator. Experimental results show that our algorithms can effectively exploit loop-carried stream reuse for scientific stream programs and thus greatly improve the performance of memory-bound scientific stream programs.

Stream Reuse, Loop-Carried, Stream Processor

W. XU, Q. DOU, Y. ZHANG, G. LI and X. YANG, "Exploiting Loop-Carried Stream Reuse for Scientific Computing Applications on the Stream Processor," International Journal of Communications, Network and System Sciences, Vol. 3 No. 1, 2010, pp. 32-37. doi: 10.4236/ijcns.2010.31003.