トップページ イベント・広報 R-CCS Cafe 第179回 第1部
第179回 第1部
講演題目
The First Supercomputer with HyperX Topology: A Viable Alternative to Fat-Trees?
開催日 | 2019年8月22日(木) |
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開催時間 | 14:00 - 14:40 |
開催都市 | 兵庫県神戸市 |
場所 | R-CCS 6階講堂 |
使用言語 | 発表・スライド共に英語 |
登壇者 |
講演要旨
The state-of-the-art topology for modern supercomputers are Folded Clos networks, a.k.a. Fat-Trees. The node count in these massively parallel systems is steadily increasing. This forces an increased path length, which limits gains for latency-sensitive applications. A novel, yet only theoretically investigated, alternative is the low-diameter HyperX. To perform a fair side-by-side comparison between a 3-level Fat-Tree and a 12x8 HyperX, we constructed the world’s first 3 Pflop/s supercomputer with these two networks. We show through a variety of benchmarks that the HyperX, together with our novel communication pattern-aware routing, can challenge the performance of traditional Fat-Trees.
(2019年8月15日)