SCHEDULE: NOV 12-18, 2011

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MINT: A Fast and Green Synchronization Technique

SESSION: Research Poster Reception

EVENT TYPE: ACM Student Research Competition Poster, Poster, Electronic Poster

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Bernd Mohr

AUTHOR(S):Atsushi Hori, Yutaka Ishikawa

ROOM:WSCC North Galleria 2nd/3rd Floors

ABSTRACT:
A novel synchronization technique, named "MINT" is proposed. This proposed synchronization technique is as fast as spin-wait, but much more energy-saving. The key idea is to utilize the MONITOR and MWAIT instructions listed in the X86 SSE extension. The waiting in the MWAIT instruction dramatically reduce the CPU power consumption, however, it is found that those instruction pair is very slow. The contribution in this paper is the two-phase synchronization, firstly spin-waiting on a synchronization flag, and then waiting in a loop of the MONITOR and MWAIT instructions. As a result, a very fast and low-power synchronization can be developed. A new thread library, Shadow Thread, is developed by using the MINT technique, and it is shown that the memcpy function threaded by Shadow Thread can outperforms the original memcpy function.

Chair/Author Details:

Bernd Mohr (Chair) - Juelich Supercomputing Centre

Atsushi Hori - RIKEN AICS

Yutaka Ishikawa - University of Tokyo

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