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Improving Memory Access Locality for Vectorized Bit-Serial Matrix Multiplication in Reconfigurable Computing

Sasnayake Mudiyanselage, Lahiru Kasun Rasnayake; Själander, Magnus
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Sasnayake Mudiyanselage (326.7Kb)
Permanent lenke
https://hdl.handle.net/11250/2677748
Utgivelsesdato
2019
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  • Institutt for datateknologi og informatikk [6323]
  • Publikasjoner fra CRIStin - NTNU [34929]
Originalversjon
10.1109/ICFPT47387.2019.00081
Sammendrag
Low-precision matrix multiplication has gained significant interest in the research community due to its applicability in the quantized neural network domain. As a result, a multitude of variable precision hardware designs have been proposed since fixed-precision hardware causes under-utilization of the hardware resources due to the low and varying precision in such applications. Bit-serial hardware takes advantage of the frugal nature of bit-serial computations that can operate on only as many bits as necessary. A bit-serial matrix multiplication consists of a summation of weighted binary matrix multiplications. In this work, we study the inherent locality of bit-serial matrix multiplications and propose a locality-aware scheduling algorithm that eliminates redundant data fetches from memory. The proposed schedule improves with up to 76% compared to a schedule that computes each binary matrix multiplication in sequence.
Utgiver
Institute of Electrical and Electronics Engineers (IEEE)

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