Direct Universal Access: Making Data Center Resources Available to FPGA


Ran Shu and Peng Cheng, Microsoft Research; Guo Chen, Microsoft Research & Hunan University; Zhiyuan Guo, Microsoft Research & Beihang University; Lei Qu and Yongqiang Xiong, Microsoft Research; Derek Chiou and Thomas Moscibroda, Microsoft Azure


FPGAs have been deployed at massive scale in data centers. The currently available communication architectures, however, make FPGAs very difficult to utilize resources in data center. In this paper, we present Direct Universal Access (DUA), a communication architecture that provides uniform access for FPGA to heterogeneous data center resources. Without considering machine boundaries, DUA provides global names and a common interface for communicating with various resources, where the underlying network automatically routes traffic and manages resource multiplexing. Our benchmarks show that DUA provides simple and fair-share resource access with small logic area overhead (<10%) and negligible latency (<0.2$\mu$s). We also build two practical multi-FPGA applications, deep crossing and regular expression matching, on top of DUA to demonstrate the usability and efficiency.

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@inproceedings {225982,
author = {Ran Shu and Peng Cheng and Guo Chen and Zhiyuan Guo and Lei Qu and Yongqiang Xiong and Derek Chiou and Thomas Moscibroda},
title = {Direct Universal Access: Making Data Center Resources Available to {FPGA}},
booktitle = {16th {USENIX} Symposium on Networked Systems Design and Implementation ({NSDI} 19)},
year = {2019},
isbn = {978-1-931971-49-2},
address = {Boston, MA},
pages = {127--140},
url = {},
publisher = {{USENIX} Association},