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arXiv · 2309.03628

OSMOSIS: Enabling Multi-Tenancy in Datacenter SmartNICs

Mikhail Khalilov·Marcin Chrapek·Siyuan Shen·Alessandro Vezzu·Thomas Benz·Salvatore Di Girolamo·Timo Schneider·Daniele De Sensi·Luca Benini·Torsten Hoefler
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Abstract

Multi-tenancy is essential for unleashing SmartNIC's potential in datacenters. Our systematic analysis in this work shows that existing on-path SmartNICs have resource multiplexing limitations. For example, existing solutions lack multi-tenancy capabilities such as performance isolation and QoS provisioning for compute and IO resources. Compared to standard NIC data paths with a well-defined set of offloaded functions, unpredictable execution times of SmartNIC kernels make conventional approaches for multi-tenancy and QoS insufficient. We fill this gap with OSMOSIS, a SmartNICs resource manager co-design. OSMOSIS extends existing OS mechanisms to enable dynamic hardware resource multiplexing of the on-path packet processing data plane. We integrate OSMOSIS within an open-source RISC-V-based 400Gbit/s SmartNIC. Our performance results demonstrate that OSMOSIS fully supports multi-tenancy and enables broader adoption of SmartNICs in datacenters with low overhead.

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Mikhail Khalilov, Marcin Chrapek, Siyuan Shen, Alessandro Vezzu, Thomas Benz, Salvatore Di Girolamo, Timo Schneider, Daniele De Sensi, Luca Benini, Torsten Hoefler. 2024-03-13. OSMOSIS: Enabling Multi-Tenancy in Datacenter SmartNICs. https://arxiv.org/abs/2309.03628

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