Low power data processing by elimination of redundant computations
ISLPED '97 Proceedings of the 1997 international symposium on Low power electronics and design
Compiler-directed dynamic computation reuse: rationale and initial results
Proceedings of the 32nd annual ACM/IEEE international symposium on Microarchitecture
Wattch: a framework for architectural-level power analysis and optimizations
Proceedings of the 27th annual international symposium on Computer architecture
On the potential of tolerant region reuse for multimedia applications
ICS '01 Proceedings of the 15th international conference on Supercomputing
VLSID '04 Proceedings of the 17th International Conference on VLSI Design
Caching Function Results: Faster Arithmetic by Avoiding Unnecessary Computation
Caching Function Results: Faster Arithmetic by Avoiding Unnecessary Computation
Quality-driven design by bitwidth optimization for video applications
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
Initial Results on Fuzzy Floating Point Computation for Multimedia Processors
IEEE Computer Architecture Letters
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Motivated by data value locality and quality tolerance present in multimedia applications, we propose a new micro-architecture, Region-level Approximate Computation Buffer (RACB), to reduce power consumption in such applications. The proposed RACB relaxes the exact matching into partial and approximate tag matching and applies it to regions of code in a program, thereby allowing for aggressive computation/execution reduction, in addition to reductions in memory accesses and pipeline activities. Our experiments demonstrate that a 64-entry RACB can yield up to 70% of region-level execution reduction without noticeable quality degradation in MPEG-2 video decoding, corresponding to 55.9% of system power savings with respect to the regions