OpenCL™ is the first open, royalty-free standard for cross-platform, parallel programming of modern processors found in personal computers, servers and handheld/embedded devices. OpenCL (Open Computing Language) greatly improves speed and responsiveness for a wide spectrum of applications in ...

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OpenCL C Matrix Multiplication over Multiple Runs

I am attempting to translate a dgemm / MPI matrix multiplier onto the GPU through OpenCL C. My issue is that the code below gives the correct output for a 9x6 matrix being multiplied by a 6x450 ...
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Recomended OpenCL development tools for my problem.

I'm working on an image processing project and hve written some of my algorithms in OpenCL. At the moment I'm using Cloo. I'm at the stage now where I want to optimise my program, as it currently ...
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CUDA vs OpenCL as of late 2013

How do CUDA and OpenCL compare to each other as of late 2013 from a programmer's perspective? My group is thinking about trying to make use of GPU computing. Would we be limiting ourself ...
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Returning variable length arrays in OpenCL

I'm new to opencl and I'm trying to figure out how to return a variable length array of numbers. (I'm using Cloo for C# .net) I am doing image processing and I've written a program to look for ...
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OpenCL version constraints?

There's a computational code I'm working with which I'm told requires OpenCL 1.1 or later. I found out I'm saddled with OpenCL 1.0 on my Macbook Pro using some helpful code snippets, and Google has ...
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178 views

How to use multiple passes in OpenCL?

I'm new to opencl but I have some experience using HLSL. In HLSL multiple passes are used when you need to finish a computation before moving on to the next step. I would like to know how this sort ...
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284 views

How to handle floating point operations in HLSL?

I'm trying to write a perona malik anisotropic diffusion filter for the GPU. I'm basing my shader off a matlab implementation of the filter. I'm running into trouble because of what I suspect is ...
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122 views

Looking for super computer technology suggestions

I'm writing some image processing software to detect bubbles in oil at work. One of the image filters I need (Perona Malik) seems like it will take a long time to compute. (It involves solving some ...
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648 views

Selection of linear solver for GPGPU computation (OpenCL)

I have already developed a working solution of the Finite Element Method to solve heat transfer problems using GPU and OpenCL using the Conjugate Gradient method. The main disadvantage of this method ...
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Understanding OpenCL performance

I'm using ViennaCL's interface to Eigen as a way to leverage OpenCL. Specifically, I'm using the ::viennacl::linalg::bicgstab_tag with an Eigen sparse matrix. ...
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Mathematical Libraries for OpenCL?

I am looking for information from anyone that has tried to use OpenCL in their scientific code. Has anyone tried (recently) ViennaCL? If so, how does it compare to cusp? What about OCLTools? Does it ...