June 2017
Intermediate to advanced
873 pages
18h 9m
English
Content preview from Dart: Scalable Application DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using SIMD for enhanced performance
A lot of modern CPUs and GPUs provide Single Instruction Multiple Data (SIMD) support. Four 32-bit data values (integers or floats) can be processed in parallel with the help of 128-bit special registers. This provides a potential speedup of 400 percent for image processing, 3D graphics, audio processing, and other numeric computation algorithms. Also, machine-learning algorithms (such as for automatic speech recognition) that use a Gauss Mixture Model (GMM) benefit from SIMD.
How to do it…
Dart lets you work with this feature by using the special SIMD x types from the typed_data library. It offers the following four types:
Int32x4, which represents four 32-bit integer valuesFloat32x4, which represents four single-precision ...
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