@inproceedings{osb-che-cou-luk-men-07-aa-minbit, author = {Osborne, W.G. and Cheung, R.C.C. and Coutinho, J.G.F. and Luk, W. and Mencer, O.}, title = {Automatic Accuracy-Guaranteed Bit-Width Optimization for Fixed and Floating-Point Systems}, booktitle = {2007 International Conference on Field Programmable Logic and Applications}, year = 2007, volume = {}, number = {}, pages = {617-620}, doi = {10.1109/FPL.2007.4380730}, ISSN = {1946-1488}, month = aug, comment = {MinBit+ is static analysis unsing IA/AA to optimize bit widths in signal processors}, abstract = {In this paper we present Minibit+, an approach that optimizes the bit-widths of fixed-point and floating-point designs, while guaranteeing accuracy. Our approach adopts different levels of analysis giving the designer the opportunity to terminate it at any stage to obtain a result. Range analysis is achieved using a combined affine and interval arithmetic approach to reduce the number of bits. Precision analysis involves a coarse-grain and fine-grain analysis. The best representation, in fixed-point or floating-point, for the numbers is then chosen based on the range, precision and latency. Three case studies are used: discrete cosine transform, B-Splines and RGB to YCbCr color conversion. Our analysis can run over 200 times faster than current approaches to this problem while producing more accurate results, on average within 2-3% of an exhaustive search.} }