Stochastic Computing for Reliable Memristive In-Memory Computation

Mohsen Riahi Alam, M. Hassan Najafi, Nima TaheriNejad, Mohsen Imani, Lu Peng

Abstract: In-Memory Computing (IMC) is a promising computing paradigm to accelerate Big Data applications. It reduces the data movement between memory and processing units, and provides massive parallelism. Memristive technology is one of the promising technologies for IMC. This emerging technology, however, is still in evolution, facing practical challenges. Memristive memories are prone to softerror while storing the data and during computations. The traditional binary encoding commonly used in memristive IMC is highly sensitive to soft-errors, which makes developing reliable memristive IMC more challenging. Stochastic Computing (SC) is a re-emerging computing paradigm that is highly robust against soft-errors as any bit flip leads to only a least significant bit error. In this work, we study SC as a solution to increase the reliability of memristive IMC. We investigate how and to what extent SC may address or improve the reliability issues of current memristive technology, and memristive IMC. We also evaluate the characteristics yielded by memristive stochastic IMC and compare them with those of the traditional reliability techniques.