Title
A Precision-Scalable Energy-Efficient Bit-Split-and-Combination Vector Systolic Accelerator for NAS-Optimized DNNs on Edge
Abstract
Optimized model and energy-efficient hardware are both required for deep neural networks (DNNs) in edge-computing area. Neural architecture search (NAS) methods are employed for DNN model optimization with resulted multi-precision networks. Previous works have proposed low-precision-combination (LPC) and high-precision-split (HPS) methods for multi-precision networks, which are not energy-efficient for precision-scalable vector implementation. In this paper, a bit-split-and-combination (BSC) based vector systolic accelerator is developed for a precision-scalable energy-efficient convolution on edge. The maximum energy efficiency of the proposed BSC vector processing element (PE) is up to 1.95x higher in 2-bit, 4-bit and 8-bit operations when compared with LPC and HPS PEs. Further with NAS optimized multi-precision CNN networks, the averaged energy efficiency of the proposed vector systolic BSC PE array achieves up to 2.18x higher in 2-bit, 4-bit and 8-bit operations than that of LPC and HPS PE arrays.
Year
DOI
Venue
2022
10.23919/DATE54114.2022.9774679
PROCEEDINGS OF THE 2022 DESIGN, AUTOMATION & TEST IN EUROPE CONFERENCE & EXHIBITION (DATE 2022)
Keywords
DocType
ISSN
Precision-scalable, bit-split-and-combination, vector systolic, accelerator, CNN, NAS
Conference
1530-1591
Citations 
PageRank 
References 
0
0.34
0
Authors
9
Name
Order
Citations
PageRank
Kai Li124.49
Junzhuo Zhou200.68
Yuhang Wang3170.92
Junyi Luo400.34
Zhengke Yang500.34
Shuxin Yang600.68
Wei Mao700.68
Mingqiang Huang800.34
Yu Yu96919.95