Low power (mW) and high performance (GOPS) are strong requirements for compute-intensive signal processing in E-health, Internet-of-Things, and wearable applications. This work presents a building block for programmable Ultra-Low Power accelerators, namely a tightly-coupled computing cluster that supports parallel and sequential execution at high energy efficiency over a wide range of workload requirements. The cluster, implemented in 28nm UTBB FD-SOI technology, achieves peak energy efficiency in the near-threshold (NVT) operating region: 193 MOPS/mW at 162 MOPS for parallel workloads, and 90 MOPS/mW at 68 MOPS for sequential workloads at 0.46V and 0.5V, respectively. The energy efficient operating range is wide (0.32V to 1.15V), also meeting the design goal of 1 GOPS within a 10 mW power envelope (at 0.66V).
Rossi, D., Pullini, A., Loi, I., Gautschi, M., Gurkaynak, F.K., Teman, A., et al. (2016). 193 MOPS/mW @ 162 MOPS, 0.32V to 1.15V voltage range multi-core accelerator for energy efficient parallel and sequential digital processing. Institute of Electrical and Electronics Engineers Inc. [10.1109/CoolChips.2016.7503670].
193 MOPS/mW @ 162 MOPS, 0.32V to 1.15V voltage range multi-core accelerator for energy efficient parallel and sequential digital processing
ROSSI, DAVIDE;LOI, IGOR;BENINI, LUCA
2016
Abstract
Low power (mW) and high performance (GOPS) are strong requirements for compute-intensive signal processing in E-health, Internet-of-Things, and wearable applications. This work presents a building block for programmable Ultra-Low Power accelerators, namely a tightly-coupled computing cluster that supports parallel and sequential execution at high energy efficiency over a wide range of workload requirements. The cluster, implemented in 28nm UTBB FD-SOI technology, achieves peak energy efficiency in the near-threshold (NVT) operating region: 193 MOPS/mW at 162 MOPS for parallel workloads, and 90 MOPS/mW at 68 MOPS for sequential workloads at 0.46V and 0.5V, respectively. The energy efficient operating range is wide (0.32V to 1.15V), also meeting the design goal of 1 GOPS within a 10 mW power envelope (at 0.66V).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
