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Assigning program and data objects to scratchpad for energy reduction

delete2024-08-10
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PRE
AI
S
Stefan Steinke
L
Lars Wehmeyer
B
Bo-Sik Lee
P
Peter Marwedel
DOI:10.1109/DATE.2002.998306delete
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Abstract

Abstract

En 中文
The number of embedded systems is increasing and a remarkable percentage is designed as mobile applications. For the latter the energy consumption is a limiting factor because of today's battery capacities. Besides the processor memory accesses consume a high amount of energy. The use of additional less power hungry memories like caches or scratchpads is thus common. Caches incorporate the hardware control logic for moving data in and out automatically. On the other hand, this logic requires chip area and energy. A scratchpad memory is much more energy efficient, but there is a need for software control of its content. In this paper, an algorithm integrated into a compiler is presented which analyses the application and selects program and data parts which are placed into, the scratchpad. Comparisons against a cache solution show remarkable advantages between 12% and 43% in energy consumption for designs of the same memory size.(1).
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D
Design, Automation and Test in Europe
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