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Software Aspects of IEEE Floating-Point Computations for Numerical Applications in High Energy Physics

Software Aspects of IEEE Floating-Point Computations for Numerical Applications in High Energy Physics

This video was recorded at CERN Computing Seminar. loating-point computations are at the heart of much of the computing done in high energy physics. The correctness, speed and accuracy of these computations are of paramount importance. The lack of any of these characteristics can mean the difference between new, exciting physics and an embarrassing correction. This talk will examine practical aspects of IEEE 754-2008 floating-point arithmetic as encountered in HEP applications. After describing the basic features of IEEE floating-point arithmetic, the presentation will cover: common hardware implementations (SSE, x87) techniques for improving the accuracy of summation, multiplication and data interchange compiler options for gcc and icc affecting floating-point operations hazards to be avoided

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