TY - GEN
T1 - Measuring congestion in high-performance datacenter interconnects
AU - Jha, Saurabh
AU - Patke, Archit
AU - Brandt, Jim
AU - Gentile, Ann
AU - Lim, Benjamin
AU - Showerman, Mike
AU - Bauer, Greg
AU - Kaplan, Larry
AU - Kalbarczyk, Zbigniew
AU - Kramer, William
AU - Iyer, Ravi
N1 - Publisher Copyright:
© Proc. of the 17th USENIX Symposium on Networked Systems Design and Impl., NSDI 2020. All rights reserved.
PY - 2020
Y1 - 2020
N2 - While it is widely acknowledged that network congestion in High Performance Computing (HPC) systems can significantly degrade application performance, there has been little to no quantification of congestion on credit-based interconnect networks. We present a methodology for detecting, extracting, and characterizing regions of congestion in networks. We have implemented the methodology in a deployable tool, Monet, which can provide such analysis and feedback at runtime. Using Monet, we characterize and diagnose congestion in the world's largest 3D torus network of Blue Waters, a 13.3-petaflop supercomputer at the National Center for Supercomputing Applications. Our study deepens the understanding of production congestion at a scale that has never been evaluated before.
AB - While it is widely acknowledged that network congestion in High Performance Computing (HPC) systems can significantly degrade application performance, there has been little to no quantification of congestion on credit-based interconnect networks. We present a methodology for detecting, extracting, and characterizing regions of congestion in networks. We have implemented the methodology in a deployable tool, Monet, which can provide such analysis and feedback at runtime. Using Monet, we characterize and diagnose congestion in the world's largest 3D torus network of Blue Waters, a 13.3-petaflop supercomputer at the National Center for Supercomputing Applications. Our study deepens the understanding of production congestion at a scale that has never been evaluated before.
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M3 - Conference contribution
AN - SCOPUS:85084658999
T3 - Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020
SP - 37
EP - 57
BT - Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020
PB - USENIX Association
T2 - 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020
Y2 - 25 February 2020 through 27 February 2020
ER -