@inproceedings{5a312028a62f4198a63aa5c1f9554052,
title = "Analysis of topology-dependent MPI performance on gemini networks",
abstract = "Current HPC systems utilize a variety of interconnection networks, with varying features and communication characteristics. MPI normalizes these interconnects with a common interface used by most HPC applications. However, network properties can have a significant impact on application performance. We explore the impact of the interconnect on application performance on the Blue Waters supercomputer. Blue Waters uses a three-dimensional, Cray Gemini torus network, which provides twice the Y-dimension bandwidth in the X and Z dimensions. Through several benchmarks, including a halo-exchange example, we demonstrate that application-level mapping to the network topology yields significant performance improvements.",
keywords = "Gemini, Interconnection network, MPI, Network topology",
author = "Pe{\~n}a, {Antonio J.} and Carvalho, {Ralf G.Correa} and James Dinan and Pavan Balaji and Rajeev Thakur and William Gropp",
year = "2013",
doi = "10.1145/2488551.2488564",
language = "English (US)",
isbn = "9788461651337",
series = "ACM International Conference Proceeding Series",
publisher = "Association for Computing Machinery",
pages = "61--66",
booktitle = "Proceedings of the 20th European MPI Users' Group Meeting, EuroMPI 2013",
address = "United States",
note = "20th European MPI Users' Group Meeting, EuroMPI 2013 ; Conference date: 15-09-2013 Through 18-09-2013",
}