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Thursday, September 3 • 3:10pm - 3:25pm
Omnixtend Boot Protocol and Coherent Scaleout - Dejan Vucinic, Western Digital Corporation

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Over the past eighteen months OmniXtend has become the de facto standard for building multi-socket RISC-V systems. Recent efforts within the Interconnects Workgroup in CHIPS Alliance resulted in the definition of an initialization and configuration protocol which enables the construction of massively parallel systems of arbitrary size. This is a simple yet race-free approach to setting up any number of coherent endpoints at boot. It enables different system models: a single instance of an operating system over several nodes with Non-Uniform Memory Access (NUMA) or independent instances of operating systems on different nodes sharing global memory coherently and peripherals non-coherently. This talk will cover the basics of the protocol and the currently enabled usage scenarios, as well as the future vision for fault-tolerance and coherent hotplug.


Dejan Vucinic

Director, R&D Engineering, Western Digital Corporation
Dr. Dejan Vucinic is Director of R&D Engineering at Western Digital. His group's research interests include computational storage scaleout with RISC-V, OmniXtend and programmable network switches. He chairs the Interconnects Workgroup in CHIPS Alliance, a forum for discussion of open... Read More →

Thursday September 3, 2020 3:10pm - 3:25pm PDT