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GPU Computing Gems Emerald Edition
book

GPU Computing Gems Emerald Edition

by Wen-mei W. Hwu
January 2011
Intermediate to advanced content levelIntermediate to advanced
886 pages
28h 35m
English
Morgan Kaufmann
Content preview from GPU Computing Gems Emerald Edition
Chapter 42. 3-D Tomographic Image Reconstruction from Randomly Ordered Lines with CUDA
Guillem Pratx, Jing-Yu Cui, Sven Prevrhal and Craig S. Levin
We present a novel method of computing line-projection operations along sets of randomly oriented lines with CUDA and its application to positron emission tomography (PET) image reconstruction. The new approach addresses challenges that include compute thread divergence and random memory access by exploiting GPU capabilities such as shared memory and atomic operations. The benefits of the CUDA implementation are compared with a reference CPU-based code. When applied to PET image reconstruction, the CUDA implementation is 43X faster, and images are virtually identical. In particular, the deviation ...
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Publisher Resources

ISBN: 9780123849885