Fast & Energy-Efficient Breadth-First Search on a Single NUMA System

こちらでも紹介いただいていますが、ISC14 (International Supercomputing Conference) に投稿していた論文が採択されました。ISC14 プログラムも公開されています。

内容は Graph500 (Nov. 2013) と Green Graph500 (Nov. 2013) での成果をまとました。
・我々の既存研究 Hybrid BFS + NUMA を更に改善 (2.68 倍)
・実行時間の大部分を占めている Bottom-up での探索枝削減と、CSR グラフに対する in-direct アクセスの削減
・実ネットワークに対する計算機実験
・SGI Altix UV1000 上での性能解析
・Intel Xeon サーバや、Android device 上での電力性能解析

Title:
Fast & Energy-Efficient Breadth-First Search on a Single NUMA System

Authors:
Yuichiro Yasui, Chuo University & JST CREST
Katsuki Fujisawa, Chuo University & JST CREST
Yukinori Sato, JAIST & JST CREST

Abstract:
Breadth-first search (BFS) is an important graph analysis kernel. The Graph500 benchmark measures a computer's BFS performance using the traversed edges per second (TEPS) ratio. Our previous nonuniform memory access (NUMA)-optimized BFS reduced memory accesses to remote RAM on a NUMA architecture system; its performance was 11 GTEPS (giga TEPS) on a 4-way Intel Xeon E5-4640 system. Herein, we investigated the computational complexity of the bottom-up, a major bottleneck in NUMA-optimized BFS. We clarify the relationship between vertex out-degree and bottom-up performance. In November 2013, our new implementation achieved a Graph500 benchmark performance of 37.66 GTEPS (fastest for a single node) on an SGI Altix UV1000 (one-rack) and 31.65 GTEPS (fastest for a single server) on a 4-way Intel Xeon E5-4650 system. Furthermore, we achieved the highest Green Graph500 performance of 153.17 MTEPS/W (mega TEPS per watt) on an Xperia-A SO-04E with a Qualcomm Snapdragon S4 Pro APQ8064.