Exploiting Loop-Carried Stream Reuse for Scientific Computing Applications on the Stream Processor

• 作者: Gen LI Qiang DOU Weixia XU Xuejun YANG Ying ZHANG
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 医学
• 关键词: STREAM REUSE Loop-Carried STREAM PROCESSOR
• 年，卷（期）: 2010,（1）
• 页码范围: 32-37
• 页数: 6页
• 分类号: R73

摘要

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.