All technical blog posts written by people of the Stream HPC team.
When we port software to the GPU or FPGA, testability is very important. A part of making the code testable, is getting its functionality fully under control. And you guessed already that run-time generated random numbers takes good attention. In a selection of past projects random numbers were generated on every run. Statistically the simulations were more correct,
Porting code that uses random numbers Read More »
In the first part of our two-part blog series, we have discussed how parallel computing applications can best use pseudo-random number generators (PRNGs) so as to benefit from parallel computing speedups, without negatively impacting the statistical properties of the random numbers generated. We have argued that index-based PRNGs (e.g., from the Random123 library), which do
Random Numbers in Parallel Computing: Generation and Reproducibility (Part 2) Read More »
In the past year we’ve been working on more internal projects and therefore we’re seeking strong GPU-coders (good OpenCL experience required) worldwide. This way you can combine staying close to your family and working with advanced technologies. You will be on the newly formed international team. Do understand that we have extra requirements for freelancers:
Strengthen our team as a remote worker (freelancer) Read More »
When you ask how fast code is, then we might not be able to answer that question. It depends on the data and the metric. In this article I’ll give an overview of different ways to describe speed and what metrics are used. I focus on two types of data-utilisations: Transfers. Data-movements through cables, interconnects,
Performance can be measured as Throughput, Latency or Processor Utilisation Read More »
Want to help build an important website? OpenCL.org’s components have been designed and partly built, but still a lot of work needs to be done. We’re seeking an intern (or “extern” when not in Amsterdam) who can help us build the site. This internship is not about GPUs! To complete the tasks, the following is
OpenCL.org internship/externship Read More »
For years we haven been complaining on this blog what AMD was lacking and what needed to be improved. And as you might have concluded from the title of this blogpost, there has been a lot of progress. AMD is back! It will all come together in the beginning of 2017, but you’ll see a lot of progress already
Are you around at ISC and have an opinion on portable open standards? Then you should join the discussion with other professionals at ISC. Some suggestions for discussions: (non)-preference for open standards like OpenCL, OpenMP, HSA and OpenACC. Portability versus performance. Using scripting languages in HPC, like Python. Below info might change, because a map is never reality!
ISC lunch discussion: Portable Open Standards in HPC Read More »
Vincent Hindriksen will be walking around at ISC from 20 to 22 June. With me I bring our latest brochure, some examples of great optimisations and some Dutch delicacies. Also we will also have some exciting news with an important partner – stay tuned! It will be a perfect time to discuss how StreamHPC can help you solve tough
Let’s meet at ISC in Frankfurt Read More »
We have been talking about GPUs, FPGAs and CPUs a lot, but there are more processors that can solve specific problems. This time I’d like you to give a quick introduction to grid-processors. Grid-processors are different from GPUs. Where a multi-core GPU gets its strength from being able to compute lots of data in parallel (SIMD data-parallellism), a grid-processors
An introduction to Grid-processors: Parallella, Kalray and KnuPath Read More »
OpenCL header files When you develop professional software, it is a best practise to have external header files fixed, to have versioning under full control. This way you don’t get the surprises when your colleague has another OpenCL SDK installed. Luckily the Khronos Group has put all version of the OpenCL header files on Github, so you can easily download
Download all OpenCL header files and build your own OpenCL library Read More »