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A 1.2-v 90-MHz bitmap index creation accelerator with 0.27-nW standby power on 65-nm silicon-on-thin-box (SOTB) CMOS

Nguyen, X.-T. and Hoang, T.-T. and Inoue, K. and Bui, N.-T. and Hoang, V.-P. and Pham, C.-K. (2019) A 1.2-v 90-MHz bitmap index creation accelerator with 0.27-nW standby power on 65-nm silicon-on-thin-box (SOTB) CMOS. In: 2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019, 26 May 2019 through 29 May 2019.

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Abstract

Although bitmap index (BI) can surmount complex and multi-dimensional queries, the creation of BI itself is a time-consuming task. Many studies exploit the highly parallel processing capabilities of multi-core CPUs, graphics processing units (GPUs), or field-programmable gate arrays (FPGAs) to overcome this obstacle. This study, on the other hand, proposes a 65-nm silicon-on-thin-buried-oxide (SOTB) hardware accelerator dedicated to BI creation. The fabricated chip could operate at different supply voltages, from 0.45-V to 1.2-V. Concretely, in the active mode with the supply voltage of 1.2-V, this chip was fully operational at 90-MHz and consumed approximately 88.1-pJ/cycle. In the standby mode with the supply voltage of 0.45-V and clock gated, the power consumption was only 476.1-nW. Moreover, when the reverse back-gate bias voltage of -2.5-V is supplied, the standby power sharply dropped to 0.27-nW or approximately 1,763 times. This achievement is vitally essential for the energy-efficient applications, where the performance should be maximized during peak workload hours and the power should be minimized during off-peak time. © 2019 IEEE

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculties > Faculty of Radio-Electronic Engineering
Identification Number: 10.1109/ISCAS.2019.8702331
Uncontrolled Keywords: CMOS integrated circuits; Computer graphics; Energy efficiency; Field programmable gate arrays (FPGA); Graphics processing unit; Program processors; Energy efficient; Fabricated chips; Fully operational; Hardware accelerators; Highly parallels; Multi-dimensional queries; Thin buried oxides; Time-consuming tasks; Silicon compounds
Additional Information: Conference code: 148242. Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9442

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