TAFFO: The compiler-based precision tuner

Abstract We present taffo, a framework that automatically performs precision tuning to exploit the performance/accuracy trade-off. In order avoid expensive dynamic analyses, taffo leverages programmer annotations which encapsulate domain knowledge about conditions under software being optimized will run. As result, is easy use and provides state-of-the-art optimization efficacy in variety of hardware configurations application domains. provide guidelines for effective exploitation by showing typical example usage on simple application, achieving speedup up 60% at price an absolute error 3.53×10?5. modular based solid llvm technology, allows extensibility improved analysis techniques, comprehensive support most common precision-reduced data types programming languages. technology has been selected as tool European Training Network Approximate Computing.