Parallel Algorithms / Architecture Synthesis, AIZU International Symposium on (1997)
Aizu-Wakamatsu, Fukushima, JAPAN
Mar. 17, 1997 to Mar. 21, 1997
Chan , National University of Singapore
Wai-wai , National University of Singapore
Chi , National University of Singapore
Chi-hung , National University of Singapore
Data prefetching has been proven to be effective in hiding the memory latency from the pl-ogram execution time. Most current data prefetching schemes target only for array references with constant strides. For array references with non-constant strides, they lose most of their effectiveness. In this paper, we propose a novel data prefetching scheme based on a property, called the Self-Containness of Variables, which is widely available in most loop-rich applications. We observed that the update pattern of a self-contained variable in a loop can be accurately predicted. The predicated value can then be used for accurate data prefetching if the variable is the only loop-variant component of an address expression in a memory access instruction. With suitable hardware support, this scheme can be used to prefetch data from recursive data slrucrures in additional to array elements. Moreover, the coverage of this scheme is highly selectable. It can be customized easily to fit the cost-performance requirements of different processors that are designed for different applications.
Chi, Chi-hung, Chan and Wai-wai, "Prefetching by Self-Contained Variables - a Generalization from Array to Recursive Data Structures," Parallel Algorithms / Architecture Synthesis, AIZU International Symposium on(PAS), Aizu-Wakamatsu, Fukushima, JAPAN, 1997, pp. 225.