VAST-LP: clock gating in high-level synthesis

High-level synthesis (HLS) promises high-quality hardware with minimal develop- ment e ort. In this thesis, we evaluate the current state-of-the-art HLS engine VAST and propose a method to generate clock-gating-friendly RTL code for downstream logic synthesis tools. We use one-hot-key encoding method to build the state tran- sition in hardware, and we use the state registers along with main clock signal to generate subclock signals. By analyzing the usage of each register when the nite state machine is in di erent states, we assign the corresponding subclock signals to the register and reduce the unnecessary toggle of the registers when they are not in use. CHStone benchmarks in di erent application categories are used to verify the functionality and test the performance of the designs. The area and power data are measured using downstream commercial state-of-the-art tools during logic synthesis. We gain 5% to 20% dynamic power saving with -6% to 2% area increase.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2016

Author dc:creator

• Sun, Zelei

Contributors dc:contributor

• Chen, Deming

• low power
• high level synthesis

Statement dc:rights

• Copyright 2016 Zelei Sun

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/90970

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/90970