ECE Research Seminar Series

The Electrical and Computer Engineering Department welcomes guest speaker Xin Wang, CS, Illinois Tech. Ms. Wang will present her seminar, "Trade-Off Study of Localizing Communication and Balancing Network Traffic on a Dragonfly System"

Abstract

Dragonfly networks are being widely adopted in high-performance computing systems. On these networks, however, interference caused by resource sharing can lead to significant network congestion and performance variability. In this talk we present a comparative analysis exploring the trade-off between localizing communication and balancing network traffic. We conduct trace-based simulations for applications with different communication patterns, using multiple job placement policies and routing mechanisms. We perform an in-depth performance analysis on representative applications individually and show that different applications have distinct preferences regarding localized communication and balanced network traffic. We further demonstrate the effect of external network interference by introducing background traffic and show that localized communication can help reduce the application performance variation caused by network sharing.

Biography

Xin Wang is a Ph.D. student in the Computer Science Department at Illinois Institute of Technology (IIT), US. She received her M.S. degree in Computer Science at IIT. Her research area is High Performance Computing (HPC) with a focus on resource management and job scheduling. In particular, her current work is about alleviating performance variability on future HPC systems.

Please join us for a stimulating talk and light lunch.