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Cache Impacts of Datatype Acceleration

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3 Author(s)
Wu, L. ; Dept. of Comput. Sci., Columbia Univ., New York, NY, USA ; Kim, M. ; Edwards, S.A.

Hardware acceleration is a widely accepted solution for performance and energy efficient computation because it removes unnecessary hardware for general computation while delivering exceptional performance via specialized control paths and execution units. The spectrum of accelerators available today ranges from coarse-grain off-load engines such as GPUs to fine-grain instruction set extensions such as SSE. This research explores the benefits and challenges of managing memory at the data-structure level and exposing those operations directly to the ISA. We call these instructions Abstract Datatype Instructions (ADIs). This paper quantifies the performance and energy impact of ADIs on the instruction and data cache hierarchies. For instruction fetch, our measurements indicate that ADIs can result in 21-48% and 16-27% reductions in instruction fetch time and energy respectively. For data delivery, we observe a 22-40% reduction in total data read/write time and 9-30% in total data read/write energy.

Published in:

Computer Architecture Letters  (Volume:11 ,  Issue: 1 )

Date of Publication:

Jan.-June 2012

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