The End of Error: Unum Computing

John L. Gustafson

February 5, 2015 by Chapman and Hall/CRC
Reference - 416 Pages - 191 Color Illustrations
ISBN 9781482239867 - CAT# K23295
Series: Chapman & Hall/CRC Computational Science


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  • Presents a new, accessible way to represent numbers
  • Describes alternatives to classical numerical solution methods, such as massively parallel methods
  • Includes detailed, working computer code in the appendices, allowing readers to experiment with and extend the approach
  • Contains exercises throughout, making the book suitable for special interest courses
  • Provides a Mathematica® notebook for the code examples on the Downloads/Updates tab on the book’s CRC Press web page


The Future of Numerical Computing

Written by one of the foremost experts in high-performance computing and the inventor of Gustafson’s Law, The End of Error: Unum Computing explains a new approach to computer arithmetic: the universal number (unum). The unum encompasses all IEEE floating-point formats as well as fixed-point and exact integer arithmetic. This new number type obtains more accurate answers than floating-point arithmetic yet uses fewer bits in many cases, saving memory, bandwidth, energy, and power.

A Complete Revamp of Computer Arithmetic from the Ground Up

Richly illustrated in color, this groundbreaking book represents a fundamental change in how to perform calculations automatically. It illustrates how this novel approach can solve problems that have vexed engineers and scientists for decades, including problems that have been historically limited to serial processing.

Suitable for Anyone Using Computers for Calculations

The book is accessible to anyone who uses computers for technical calculations, with much of the book only requiring high school math. The author makes the mathematics interesting through numerous analogies. He clearly defines jargon and uses color-coded boxes for mathematical formulas, computer code, important descriptions, and exercises.


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