A Dual-Core RISC-V Vector Processor With On-Chip Fine-Grain Power Management in 28-nm FD-SOI

This work demonstrates a dual-core RISC-V system-on-chip (SoC) with integrated fine-grain power management. The 28-nm fully depleted silicon-on-insulator (FD-SOI) SoC integrates switched-capacitor voltage converters and 4-Gb/s off-chip serial links. The SoC runs applications with operating system su...

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Bibliographic Details
Published in:IEEE transactions on very large scale integration (VLSI) systems 2020-12, Vol.28 (12), p.2721-2725
Main Authors: Wright, John Charles, Schmidt, Colin, Keller, Ben, Dabbelt, Daniel Palmer, Kwak, Jaehwa, Iyer, Vighnesh, Mehta, Nandish, Chiu, Pi-Feng, Bailey, Stevo, Asanovic, Krste, Nikolic, Borivoje
Format: Article
Language:English
Subjects:
Accelerators
Array processors
DC-DC power conversion
DC–converter
Energy conversion efficiency
Microprocessors
Multicore processing
Phasor measurement units
Power management
Power system management
RISC
RISC-V processor
SOI (semiconductors)
Switches
System on chip
system-on-chip (SoC)
vector processor
Voltage control
Voltage converters
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Summary:This work demonstrates a dual-core RISC-V system-on-chip (SoC) with integrated fine-grain power management. The 28-nm fully depleted silicon-on-insulator (FD-SOI) SoC integrates switched-capacitor voltage converters and 4-Gb/s off-chip serial links. The SoC runs applications with operating system support on dual RISC-V Rocket cores with vector accelerators. Runtime monitoring of microarchitectural counters allows prediction of future compute intensity, enabling the voltage state of the managed core to be adjusted quickly to optimize energy efficiency without sacrificing overall performance.
ISSN:1063-8210
1557-9999
DOI:10.1109/TVLSI.2020.3030243