At Stream HPC, we love open standards. They allow developers to write portable applications, encourage industry collaboration, and enable common tooling. Each year Khronos organizes the annual IWOCL conference on open standard compute languages, and this year we are delighted to…
Question: do we work with CUDA?
Answer: Yes, actually a lot! The company was built on OpenCL and we are still work with the language a lot – from embedded GPUs and FPGAs to high-end GPUs. Like OpenCL unjustly isn’t associated with clusters full of professional GPUs,…
Why use OpenCL on FPGAs?
Altera has just released the free ebook FPGAs for dummies. One part of the book is devoted to OpenCL, so we’ll quote some extracts here from one of the chapters. The rest of the book is worth a read, so if you want to…
The 13 application areas where OpenCL and CUDA can be used
Which algorithms map is best to which accelerator? In other words: What kind of algorithms are faster when using accelerators and OpenCL/CUDA? Professor Wu Feng and his group from VirginiaTech took a close look at which types of algorithms were a…
Verify your OpenCL and CUDA kernels online for race conditions
GPUVerify is a tool for formal analysis of GPU kernels written in OpenCL and CUDA. The tool can prove that kernels are free from certain types of defect, such as data races and bugs. This is quite useful feedback for any…
NVIDIA ended their support for OpenCL in 2012
If you are looking for the samples in one zip-file, scroll down. The removed OpenCL-PDFs are also available for download. This sentence “NVIDIA’s Industry-Leading Support For OpenCL” was proudly used on NVIDIA’s OpenCL page last year. It seems that NVIDIA saw a…
Intel OpenCL CPU-drivers 2013 beta with OpenCL 1.2 support
This article is still work-in-progress Intel has just released its OpenCL bit CPU-drivers, version 2013 bèta. It has support for OpenCL 1.1 (not 1.2 as for the CPU) on Intel HD Graphics 4000/2500 of the 3rd generation Core processors (Windows only). The…
NVIDIA: mobile phones, tablets and HPC (cloud)
If you want to see what is coming up in the market of consumer-technology (PC, mobile and tablet), then NVIDIA can tell you the most. The company is very flexible, and shows time after time it really knows in which markets…
Neil Trevett on OpenCL
The Khronos Group gave some talks on their technologies in Shanghai China on the 17th of March 2012. Neil Trevett did some interesting remarks on the position of NVidia on OpenCL I would like to share with you. Neil Trevett is both…
PDFs of Monday 16 April
By exception, another PDF-Monday. OpenCL vs. OpenMP: A Programmability Debate. The one moment OpenCL and the other mom ent OpenMP produces faster code. From the conclusion: “OpenMP is more productive, while OpenCL is portable for a larger class of devices. Performance-wise, we…
Basic concepts: Function Qualifiers
In the OpenCL-code, you have run-time and compile-time of the C-code. It is very important to make this clear when you talk about compile-time of the kernel as this can be confusing. Compile-time of the kernel is at run-time of the…
Basic Concepts: online kernel compiling
Typos are a programmers worst nightmare, as they are bad for concentration. The code in your head is not the same as the code on the screen and therefore doesn’t have much to do with the actual problem solving. Code highlighting…
Basic Concepts: OpenCL Convenience Methods for Vector Elements and Type Conversions
In the series Basic Concepts I try to give an alternative description to what is said everywhere else. This time my eye fell on alternative convenience methods in two cases which were introduced there to be nice to devs with i.e. C/C++ and/or…
AMD OpenCL coding competition
The AMD OpenCL coding competition seems to be Windows 7 64bit only. So if you are on another version of Windows, OSX or (like me) on Linux, you are left behind. Of course StreamHPC supports software that just works anywhere (seriously, how…
PDFs of Monday 19 September
Already the fourth PDF-Monday. It takes quite some time, so I might keep it to 10 in the future – but till then enjoy! Not sure which to read? Pick the first one (for the rest there is not order). Edit:…
PDFs of Monday 12 September
As it got more popular that I shared my readings, I decided to put them on my site. I focus on everything that uses vector-processing (GPUs, heterogeneous computing, CUDA, OpenCL, GPGPU, etc). Did I miss something or you have a story you…
PDFs of Monday 5 September
Live from le Centre Pompidou in Paris: Monday PDF-day. I have never been inside the building, but it is a large public library where people are queueing to get in – no end to the knowledge-economy in Paris. A great place…
PDFs of Monday 29 August
This is the first PDF-Monday. It started as I used Mondays to read up on what happens around OpenCL and I like to share with you. It is a selection of what I find (somewhat) interesting – don’t hesitate to contact…
MPI in terms of OpenCL
OpenCL is a member of a family of Host-Kernel programming language extensions. Others are CUDA, IMPC and DirectCompute/AMP. It lets itself define by a separate function or set of functions referenced to as kernel, which are prepared and launched by the…
Is OpenCL coming to Apple iOS?
Answer: No, or not yet. Apple tested Intel and AMD hardware for OSX, and not portable devices. Sorry for the false rumour; I’ll keep you posted. Update: It seems that OpenCL is on iOS, but only available to system-libraries and not…
Exposing OpenCL on Android: Q&A with Tim Lewis of ZiiLabs
ZiiLabs has been offering an early access program for OpenCL SDK since last year. This program was very selective in choosing developers and little news has been put on their webpage. Now they are planning to make their Android NDK a…