Trident: A Comprehensive Timing Error Resilient Technique against Choke Points at NTC
Aatreyi Bala, Sanghamitra Royb and Koushik Chakrabortyc
USU BRIDGE LAB, Electrical and Computer Engineering, Utah State University
abal.aatreyi@gmail.com
bsanghamitra.roy@usu.edu
ckoushik.chakraborty@usu.edu
ABSTRACT
Near Threshold Computing (NTC) systems have been inherently plagued with heightened process variation (PV) sensitivity. Choke points are an intriguing manifestation of this
PV sensitivity. In this paper, we explore the probability of
minimum timing violations, caused by choke points, in an
NTC system and, their non-trivial impacts on the system reliability. We show that conventional timing error mitigation
techniques are inefficient in tackling choke point induced
minimum timing violations. Consequently, we propose a
comprehensive error mitigation technique, Trident, to tackle
choke points, at NTC. Trident offers a 1.37× performance
improvement and a 1.1× energy efficiency gain over Razor
at NTC, with minimal overheads.
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