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Wednesday, December 5 • 1:55pm - 2:20pm
Applying SIMD Optimizations to the OVS Datapath Classifier

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Virtual switches such as OVS perform classification for each packet, a domain where a similar procedure applies to each packet. Typically these functions are written in scalar C code for performance, however SIMD optimizations may provide higher performance. With AVX-512 the SIMD width has increased to 64-bytes, allowing 512-bits to be processed in parallel.

This talk introduces how to apply SIMD programming techniques to a vswitch such as OVS, which uses the concept of a miniflow structure to perform its switching. Specific examples of AVX-512 optimizations in the context of the OVS datapath classifier will be presented.



Wednesday December 5, 2018 1:55pm - 2:20pm
Club Auto Sport, San Jose

Attendees (3)