Chapter 3

OpenCL Device Architectures

Introduction

OpenCL has been developed by a wide range of industry groups to satisfy the need to standardize on programming models that can achieve good or high performance across the range of devices available on the market. Each of these companies has specific goals in mind for OpenCL and targets for what features OpenCL should have to be able to run correctly on a specific architecture. To this end, OpenCL has a range of features that attempt to allow detection of unique hardware capabilities. For example, OpenCL has a relaxed consistency block-based parallelism model intended to run relatively efficiently on serial, symmetric multiprocessing (SMP), multithreaded, and single instruction multiple data (SIMD) ...

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