HiPEAC is an academic oriented, 3-day, international conference around HPC, compilers and processors. Last year was in Vienna, this year in Amsterdam – where StreamHPC also is based. That was an extra reason to go for silver sponsorship, besides I find…
How to introduce HPC in your enterprise
The past ten years we have been happy when we got back home from the office. Our home-computer is simply faster, has more software, more memory and does not take over 10 minutes to boot. Office-computers can be that slow, because 90%…
AMD now leads the Green500
With SC14 behind us, there are a few things I’d like to share with you. I’d like to start with the biggest win for OpenCL: AMD leading in the most power-efficient GPU-cluster. A few months ago I wrote a theoretical article…
What does Khronos has more to offer than OpenCL and OpenGL?
The OpenCL standard is from the not-for-profit industry consortium Khronos Group. But they do a lot more, like the famous standard OpenGL for graphics. Focus of the group has always been on multimedia and getting the fastest results out of the…
Starting with GROMACS and OpenCL
Now that GROMACS has been ported to OpenCL, we would like you to help us to make it better. Why? It is very important we get more projects ported to OpenCL, to get more critical mass. If we only used our…
![SANAM_csm_TE_GSI_3697_highres_0efc5b22d3[1]](https://beta.streamhpc.com/wp-content/uploads/2014/11/SANAM_csm_TE_GSI_3697_highres_0efc5b22d31.jpg "SANAM_csm_TE_GSI_3697_highres_0efc5b22d3[1]")
Why this new AMD FirePro Cluster is important for OpenCL
Then it hit the doormat: “AMD is proud to collaborate with ASUS, the Frankfurt Institute for Advanced Studies, (FIAS) and GSI to support such important physics and computer science research,” said David Cummings, senior director and general manager, professional graphics, AMD….
OpenCL at SC14
During SC14 (SuperComputing Conference 2014), OpenCL is again all over New Orleans. Just like last year, I’ve composed an overview based on info from the Khronos website and the SC2014 website. Finally I’m attending SC14 myself, and will give two talks…
OpenCL integer rounding in C
Getting about the same code in C and OpenCL has lots of advantages, when maximum optimisations and vectors are not needed. One thing I bumped into myself was that rounding in C++ is different, and decided to implement the OpenCL-functions for…
Mega-kernel versus Micro-kernels in LuxRender (repost)
Below is a (slightly edited) repost of a blog by David Bucciarelli (homepage, twitter) on the Luxrender forum. I find micro-kernels an important subject, since micro-kernels have clear advantages. In OpenCL 2.0 there are more possibilities to create smaller kernels. Also…
We ported GROMACS from CUDA to OpenCL
GROMACS is an important molecular simulation kit, which can do all kinds of “soft matter” simulations like nanotubes, polymer chemistry, zeolites, adsorption studies, proteins, etc. It is being used by researches worldwide and is one of the bigger bio-informatics softwares around….
OpenCL tutorial videos from Mac Research
A while ago macresearch.com stopped from existing, as David Gohara pulled the plug. Luckily the sources of a very nice tutorial were not lost, and David gave us permission to share his material. Even if you don’t have a MAC, then…
We’re looking for an intern to do the cool stuff: benchmarking and Linux wizarding
We have some embedded devices here, which badly need attention. Some have gotten some private time on the bench, but we did not share anything on the blog yet with our readers. We simply need some extra hands to do this….
A short story: OpenCL at LaSEEB (Lisboa, Portugal)
The research lab LaSEEB (Lisboa, Portugal) is active in the areas of Biomedical Engineering, Computational Intelligence and Evolutionary Systems. They create software using OpenCL and CUDA to speed-up their research and simulations. They were one of the first groups to try…
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…
OpenCL support levels
The below table shows the current state of OpenCL, SPIR and HSA for each vendor. [table id=6 /] EP = Embedded Profile, FP = Full Profile.
OpenCL support on recent Android smartphones
The embedded world is so extremely flexible, because it is full of open standards. We therefore expect that big processor vendors will push harder than Google can push back. OpenCL-support is very important for GPGPU-libraries like ArrayFire, VexCL, ViennaCL – these…
Using async_work_group_copy() on 2D data
When copying data from global to local memory, you often see code like below (1D data): [raw] if (get_group_id(0)==0) { for (int i=0; i < N; i++) { data_local[i] = data_global[offset+i] } } mem_fence(CLK_LOCAL_MEM_FENCE); [/raw] This can be replaced this with…
Market Positioning of Graphics and Compute solutions
When compute became possible on GPUs, it was first presented as an extra feature and did not change much to the positioning of the products by AMD/ATI and Nvidia. NVidia started with positioning server-compute (described as “the GPU without a monitor-connector”),…
Valgrind suppression file for AMD64 on Linux
Valgrind is a great tool for finding possible memory leaks in code written in C, C++, Java, Perl, Python, assembly code, Fortran, Ada, etc. I use it to check out if the provided code is ok, before I start porting it…
Building a 150 TFLOPS cluster with Accelerators in 2014
You can’t ignore accelerators when designing a new cluster for HPC anymore. Back in 2010 I suggested to use GPUs to enter the Top 500 with a budget of only €38k. It takes ten times more now, as almost everybody started…
Intel promotes OpenCL as THE heterogeneous compute solution
At Intel they have CPUs (Xeon, Ivy Bridge), GPUs (Isis) and Accelerators (Xeon Phi). OpenCL enables each processor to be used to the fullest and they now promote it as such. Watch the below video and see their view on why…