A Programming Model and Runtime System for Significance-Aware Energy-Efficient Computing

作者：Vassiliadis Vassilis^*; Parasyris Konstantinos; Chalios Charalambos; Antonopoulos Christos D; Lalis Spyros; Bellas Nikolaos; Vandierendonck Hans; Nikolopoulos Dimitrios S

来源：ACM Sigplan Notices, 2015, 50(8): 275-276.

DOI：10.1145/2688500.2688546

• Energy saving
• approximate computing
• programming model
• runtime system

We introduce a task-based programming model and runtime system that exploit the observation that not all parts of a program are equally significant for the accuracy of the end-result, in order to trade off the quality of program outputs for increased energy-efficiency. This is done in a structured and flexible way, allowing for easy exploitation of different points in the quality/energy space, without adversely affecting application performance. The runtime system can apply a number of different policies to decide whether it will execute less-significant tasks accurately or approximately. The experimental evaluation indicates that our system can achieve an energy reduction of up to 83% compared with a fully accurate execution and up to 35% compared with an approximate version employing loop perforation. At the same time, our approach always results in graceful quality degradation.

• 出版日期2015-8