GPU Pro 5

7

IV

Optimizing OpenCL Kernels for

the ARM

Mali -T600 GPUs

Johan Gronqvist and Anton Lokhmotov

7.1 Introduction

OpenCL is a relatively young industry-backed standard API that aims to provide

functional portability across systems equipped with computational accelerators

such as GPUs: a standard-conforming OpenCL program can be executed on any

standard-conforming OpenCL implementation.

OpenCL, however, does not address the issue of performance portability:trans-

forming an OpenCL program to achieve higher performance on one device may

actually lead to lower performance on another device, since performance may de-

pend significantly on low-level details, suc ...