Posts tagged OpenCL

Marching Cubes implementation using OpenCL and OpenGL

6
4 months ago
by Erik Smistad in , ,

In a school project I recently created a fast implementation of Marching Cubes that uses OpenCL to extract surfaces from volumetric datasets and OpenGL to render the surfaces on screen. I wrote a paper together with my two supervisors about the implementation and presented it at the Joint Workshop on High Performance and Distributed Computing for Medical Imaging at the MICCAI 2011 conference. Our implementation achieved real-time speeds for volumes of sizes up to 512x512x512 on a standard GPU with 1GB memory. The paper entitled “Fast Surface Extraction and Visualization of Medical Images using OpenCL and GPUs” describing the implementation can be downloaded here. The source code of the implementation can be downloaded from my GitHub page.

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OpenCL C++ Utilities

9
5 months ago
by Erik Smistad in

I recently created a small utility library for OpenCL with C++. It consists of a set of function based on the OpenCL C++ bindings to help set up an OpenCL context, compiling OpenCL code and viewing error functions. I hope these functions can be useful for others and I’m planning on adding more utility functions in the future. Note that I haven’t tested it on all platforms yet. Feedback and comments are most welcome.

The source code can be downloaded from my GitHub page.

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Using the C++ bindings for OpenCL

11
1 year ago
by Erik Smistad in

While the OpenCL API is written in C, the OpenCL 1.1 specification also comes with a specification for C++ bindings. In this post I go through how to use the C++ bindings instead of C for the simple example of vector addition from my previous post Getting started with OpenCL and GPU computing.

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Getting started with OpenCL and GPU Computing

76
1 year ago
by Erik Smistad in

OpenCL (Open Computing Language) is a new framework for writing programs that execute in parallel on different compute devices (such as CPUs and GPUs) from different vendors (AMD, Intel, ATI, Nvidia etc.). The framework defines a language to write “kernels” in. These kernels are the functions which are to run on the different compute devices. In this post I explain how to get started with OpenCL and how to make a small OpenCL program that will compute the sum of two lists in parallel.

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