Intel OpenCL performance: 3rd generation hardware

Brian Kloppenborg ArrayFire, OpenCL 1 Comment

Introduction With Intel CPUs making up nearly 80% of the CPU market and 66% of computers using integrated graphics one can easily argue that integrated graphics devices represent one of the greatest markets for GPU-accelerated computing. Here at ArrayFire, we have long recognized the potential of these devices and offer built-in support for Intel CPUs, GPUs, and AMD APUs in the OpenCL backend of our ArrayFire GPU computing library. Yet one common theme for debate in the office has been how the hardware performs on different operating systems with different drivers across hardware revisions. To answer these questions (and, perhaps, to win some intra-office geek cred) I decided to write a series of blog posts about Intel's GPU OpenCL performance. In this first installment I will compare the performance ...

OpenCL on Intel HD / Iris graphics on Linux

Brian Kloppenborg OpenCL 17 Comments

Under Windows and Mac the Intel GPU drivers include OpenCL support; however, on Linux OpenCL on Intel GPUs is implemented through an open source project called Beignet (pronnounced like "ben-yay", a type of French pastry akin to a what we would call a "fritter" in English). Below I have written a step-by-step guide on how you can get Beignet running on an Ubuntu 14.10 system which has an Intel 3rd, 4th, or 5th generation Intel processor. Instructions for other variants of Linux will be similar, except for the commands to install the prerequisite packages. There are several little caveats which need to be discussed up front. Foremost, the Beignet project supports the following hardware: 3rd Generation Intel Core Processors Intel ...