@inproceedings{840ccaf2f5424a4092b383b38d0831a1,
title = "Evaluation of automatic power reduction with OSCAR compiler on Intel Haswell and ARM Cortex-A9 multicores",
abstract = "Reducing power dissipation without performance degradation is one of the most important issues for all computing systems, such as supercomputers, cloud servers, desktop PCs, medical systems, smartphones and wearable devices. Exploiting parallelism, careful frequency-and-voltage control and clock-and-power-gating control for multicore/manycore systems are promising to attain performance improvements and reducing power dissipation. However, the hand parallelization and power reduction of application programs are very difficult and time-consuming. The OSCAR automatic parallelization compiler has been developed to overcome these problems by realizing automatic lowpower control in addition to the parallelization. This paper evaluates performance of the low-power control technology of the OSCAR compiler on Intel Haswell and ARM multicore platforms. The evaluations show that the power consumption is reduced to 2/5 using 3 cores on the Intel Haswell multicore for the H.264 decoder and 1/3 for Optical Flow on 3 cores with the power control compared with 3 cores without power control. On the ARM Cortex-A9 using 3 cores, the power control reduces power consumption to 1/2 with the H.264 decoder and 1/3 with Optical Flow. These show that the OSCAR multi-platform compiler allows us to reduce the power consumption on Intel and ARM multicores.",
keywords = "Automatic parallelization, Multicore processor, Multiple platforms, Power control, Power reduction",
author = "Tomohiro Hirano and Hideo Yamamoto and Shuhei Iizuka and Kohei Muto and Takashi Goto and Tamami Wake and Hiroki Mikami and Moriyuki Takamura and Keiji Kimura and Hironori Kasahara",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2015.; 27th International Workshop on Languages and Compilers for Parallel Computing, LCPC 2014 ; Conference date: 15-09-2014 Through 17-09-2014",
year = "2015",
doi = "10.1007/978-3-319-17473-0_16",
language = "English",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "239--252",
editor = "James Brodman and Peng Tu",
booktitle = "Languages and Compilers for Parallel Computing - 27th International Workshop, LCPC 2014, Revised Selected Papers",
}