期刊
MICROMACHINES
卷 12, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/mi12101243
关键词
implication logic; logic-in-memory; memristor; Boolean algebra; RRAM; BNN
LIM circuits based on IMPLY and RRAM technologies show promising performance for edge computing, with SIMPLY architecture improving circuit reliability and reducing energy consumption. Generalizing typical logic schemes to multi-input operations significantly reduces execution time for complex functions in BNNs inference tasks.
Logic-in-memory (LIM) circuits based on the material implication logic (IMPLY) and resistive random access memory (RRAM) technologies are a candidate solution for the development of ultra-low power non-von Neumann computing architectures. Such architectures could enable the energy-efficient implementation of hardware accelerators for novel edge computing paradigms such as binarized neural networks (BNNs) which rely on the execution of logic operations. In this work, we present the multi-input IMPLY operation implemented on a recently developed smart IMPLY architecture, SIMPLY, which improves the circuit reliability, reduces energy consumption, and breaks the strict design trade-offs of conventional architectures. We show that the generalization of the typical logic schemes used in LIM circuits to multi-input operations strongly reduces the execution time of complex functions needed for BNNs inference tasks (e.g., the 1-bit Full Addition, XNOR, Popcount). The performance of four different RRAM technologies is compared using circuit simulations leveraging a physics-based RRAM compact model. The proposed solution approaches the performance of its CMOS equivalent while bypassing the von Neumann bottleneck, which gives a huge improvement in bit error rate (by a factor of at least 10(8)) and energy-delay product (projected up to a factor of 10(10)).
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