Toward unprivileged, portable and generic network topology discovery

With the increase in size and complexity of supercomputers, it has become crucial to match applications and communication libraries to the underlying network topology. This matching may allow minimizing the time spent in waiting for high-latency communication and limiting contention on the network. While MPI implementations rely mostly on software such as hwloc to retrieve information about nodes topology, no tool currently gathers network topology information in a generic and portable fashion.

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Publication Details

Published
2026-01-09
DOI
https://doi.org/10.1145/3773656.3773657
Primary Topic
Network Traffic and Congestion Control
Type
article
Field-Weighted Citation Impact
0.00
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article

Toward unprivileged, portable and generic network topology discovery

Julien Jaeger, Guillaume Mercier, Brice Goglin, Thibaut Pepin
Network Traffic and Congestion Control
article

Toward unprivileged, portable and generic network topology discovery

Julien Jaeger, Guillaume Mercier, Brice Goglin, Thibaut Pepin
article en

Abstract

With the increase in size and complexity of supercomputers, it has become crucial to match applications and communication libraries to the underlying network topology. This matching may allow minimizing the time spent in waiting for high-latency communication and limiting contention on the network. While MPI implementations rely mostly on software such as hwloc to retrieve information about nodes topology, no tool currently gathers network topology information in a generic and portable fashion.

Centre National de la Recherche Scientifique (FR), Institut national de recherche en sciences et technologies du numérique (FR), Université de Bordeaux (FR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), CEA DAM Île-de-France (FR), Laboratoire Bordelais de Recherche en Informatique (FR), Institut Polytechnique de Bordeaux (FR)
Openalex Percentile: Top 94%
Network Traffic and Congestion Control
DOIOpen Access PDFOpenAlex
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