Scaling Distributed Machine Learning with In-Network Aggregation


Amedeo Sapio, Marco Canini, and Chen-Yu Ho, KAUST; Jacob Nelson, Microsoft; Panos Kalnis, KAUST; Changhoon Kim, Barefoot Networks; Arvind Krishnamurthy, University of Washington; Masoud Moshref, Barefoot Networks; Dan Ports, Microsoft; Peter Richtarik, KAUST


Training machine learning models in parallel is an increasingly important workload. We accelerate distributed parallel training by designing a communication primitive that uses a programmable switch dataplane to execute a key step of the training process. Our approach, SwitchML, reduces the volume of exchanged data by aggregating the model updates from multiple workers in the network. We co-design the switch processing with the end-host protocols and ML frameworks to provide an efficient solution that speeds up training by up to 5.5 times for a number of real-world benchmark models.

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@inproceedings {265065,
author = {Amedeo Sapio and Marco Canini and Chen-Yu Ho and Jacob Nelson and Panos Kalnis and Changhoon Kim and Arvind Krishnamurthy and Masoud Moshref and Dan Ports and Peter Richtarik},
title = {Scaling Distributed Machine Learning with In-Network Aggregation},
booktitle = {18th {USENIX} Symposium on Networked Systems Design and Implementation ({NSDI} 21)},
year = {2021},
isbn = {978-1-939133-21-2},
url = {},
publisher = {{USENIX} Association},
month = apr,