Audit: A new synchronization API for the GET/PUT protocol

Authors:
Atsushi Hori;Jinpil Lee;Mitsuhisa Sato
Affiliations:
RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan;Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai Tsukuba-city, Ibaraki, 305-8577, Japan;RIKEN Advanced Institute for Computational Science, 7-1-26 Minatojima-minami-machi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan and Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennod ...
Venue:
Journal of Parallel and Distributed Computing
Year:
2012

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Abstract

The GET/PUT protocol is considered an effective communication API for parallel computing. However, the one-sided nature of the GET/PUT protocol lacks synchronization functionality for the target process. To date, several techniques have been proposed to tackle this problem. The APIs suggested thus far have failed to hide implementation details of the synchronization functionality. In this paper, a new synchronization API for the GET/PUT protocol is proposed. The central idea here is to associate synchronization flags with the GET/PUT memory regions. Using this technique, synchronization flags are hidden from users, and they are freed from managing the associations between the memory regions and the synchronization flags. The proposed API, named Audit, does not incur additional programming and thus enables natural parallel programming. The evaluations show that Audit exhibits better performance compared to the Notify API proposed in ARMCI.