Abstract
Interconnection networks are a critical resource for large supercomputers. The dragonfly topology, which provides a low network diameter and large bisection bandwidth, is being explored as a promising option for building multi-Petaflop's and Exaflop's systems. Unlike the extensively studied torus networks, the best choices of message routing and job placement strategies for the dragonfly topology are not well understood. This paper aims at analyzing the behavior of a machine built using a dragonfly network for various routing strategies, job placement policies, and application communication patterns. Our study is based on a novel model that predicts traffic on individual links for direct, indirect, and adaptive routing strategies. We analyze results for individual communication patterns and some common parallel job workloads. The predictions presented in this paper are for a 100+ Petaflop's prototype machine with 92,160 high radix routers and 8.8 million cores.
Original language | English (US) |
---|---|
Article number | 7013015 |
Pages (from-to) | 336-347 |
Number of pages | 12 |
Journal | International Conference for High Performance Computing, Networking, Storage and Analysis, SC |
Volume | 2015-January |
Issue number | January |
DOIs | |
State | Published - Jan 16 2014 |
Event | International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2014 - New Orleans, United States Duration: Nov 16 2014 → Nov 21 2014 |
Keywords
- dragonfly networks
- job placement
- modeling
- prediction
- routing
ASJC Scopus subject areas
- Computer Networks and Communications
- Computer Science Applications
- Hardware and Architecture
- Software