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804 results in Scientific Computing, Scientific Software

Page 3 of 41

  • 4 - Parallel Stencils

  • Richard Ansorge, University of Cambridge
  • Book:
    Programming in Parallel with CUDA
    Published online:
    04 May 2022
    Print publication:
    02 June 2022, pp 106-141

  • Summary

    The solution of partial differential equations in two and three-dimensions using stencil iteration (Jacobi’s method) is discussed and illustrated for Laplace’s equation. A very simple kernel gives about a factor of 100 speed-up compared to the host CPU.The very slow convergence of the Jacobi method can be addressed by using solutions on lower resolution grids to initialise higher resolution grids. A convergence check using the maximum change per iteration is also illustrated. Digital image processing is another example of stencil use and a number of digital image filters are shown including the Sobel filter for edge finding and the median filter for noise reduction. The fast GPU-based median filter uses one thread per image pixel and is implemented using an optimal Batcher network.

Programming in Parallel with CUDA
  • A Practical Guide
  • Richard Ansorge
  • Published online:
    04 May 2022
    Print publication:
    02 June 2022
  • CUDA is now the dominant language used for programming GPUs, one of the most exciting hardware developments of recent decades. With CUDA, you can use a desktop PC for work that would have previously required a large cluster of PCs or access to a HPC facility. As a result, CUDA is increasingly important in scientific and technical computing across the whole STEM community, from medical physics and financial modelling to big data applications and beyond. This unique book on CUDA draws on the author's passion for and long experience of developing and using computers to acquire and analyse scientific data. The result is an innovative text featuring a much richer set of examples than found in any other comparable book on GPU computing. Much attention has been paid to the C++ coding style, which is compact, elegant and efficient. A code base of examples and supporting material is available online, which readers can build on for their own projects.

The Student's Introduction to Mathematica and the Wolfram Language
  • 3rd edition
  • Bruce F. Torrence, Eve A. Torrence
  • Published online:
    01 April 2019
    Print publication:
    16 May 2019
  • The unique feature of this compact student's introduction to Mathematica® and the Wolfram Language™ is that the order of the material closely follows a standard mathematics curriculum. As a result, it provides a brief introduction to those aspects of the Mathematica® software program most useful to students. Used as a supplementary text, it will help bridge the gap between Mathematica® and the mathematics in the course, and will serve as an excellent tutorial for former students. There have been significant changes to Mathematica® since the second edition, and all chapters have now been updated to account for new features in the software, including natural language queries and the vast stores of real-world data that are now integrated through the cloud. This third edition also includes many new exercises and a chapter on 3D printing that showcases the new computational geometry capabilities that will equip readers to print in 3D.

Page 3 of 41