@inproceedings{d9ced3597d4943f49973597c77a7a770,
title = "Algebraic multigrid on a dragonfly network: First experiences on a cray XC30",
abstract = "The Cray XC30 represents the first appearance of the dragonfly interconnect topology in a product from a major HPC vendor. The question of how well applications perform on such a machine naturally arises. We consider the performance of an algebraic multigrid solver on an XC30 and develop a performance model for its solve cycle.We use this model to both analyze its performance and guide data redistribution at runtime aimed at improving it by trading messages for increased computation. The performance modeling results demonstrate the ability of the dragonfly interconnect to avoid network contention, but speedups when using the redistribution scheme were enough to raise questions about the ability of the dragonfly topology to handle very communication-intensive applications.",
author = "Hormozd Gahvari and William Gropp and Jordan, {Kirk E.} and Martin Schulz and Yang, {Ulrike Meier}",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2015.; 5th International Workshop on Performance Modeling, Benchmarking, and Simulation of High Performance Computing Systems, PMBS 2014 ; Conference date: 16-11-2014 Through 16-11-2014",
year = "2015",
doi = "10.1007/978-3-319-17248-4_1",
language = "English (US)",
isbn = "9783319172477",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer",
pages = "3--23",
editor = "Hammond, {Simon D.} and Jarvis, {Stephen A.} and Wright, {Steven A.}",
booktitle = "High Performance Computing Systems",
address = "Germany",
}