Abstract
For multimedia applications, loop buffering is an efficient mechanism to reduce the power in the instruction memory of embedded processors. In particular, software controlled clustered loop buffers are energy efficient. However current compilers for VLIW do not fully exploit the potentials offered by such a clustered organization This paper presents an algorithm to explore what is the optimal loop buffer configuration and the optimal way to use this configuration for an application or a set of applications. Results for the MediaBench application suite show an additional 18% reduction (on average) in energy in the instruction memory hierarchy as compared to traditional non-clustered approaches to the loop buffer without compromising performance.
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