Low-Energy Line Codes for On-Chip Networks
Human-Computer Interaction
2024-05-24 v1
Abstract
Energy is a primary constraint in processor design, and much of that energy is consumed in on-chip communication. Communication can be intra-core (e.g., from a register file to an ALU) or inter-core (e.g., over the on-chip network). In this paper, we use the on-chip network (OCN) as a case study for saving on-chip communication energy. We have identified a new way to reduce the OCN's link energy consumption by using line coding, a longstanding technique in information theory. Our line codes, called Low-Energy Line Codes (LELCs), reduce energy by reducing the frequency of voltage transitions of the links, and they achieve a range of energy/performance trade-offs.
Cite
@article{arxiv.2405.14783,
title = {Low-Energy Line Codes for On-Chip Networks},
author = {Beyza Dabak and Major Glenn and Jingyang Liu and Alexander Buck and Siyi Yang and Robert Calderbank and Natalie Enright Jerger and Daniel J. Sorin},
journal= {arXiv preprint arXiv:2405.14783},
year = {2024}
}