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2024-06-17 - 16:10

Dates and Events:

OSADL Articles:

2023-11-12 12:00

Open Source License Obligations Checklists even better now

Import the checklists to other tools, create context diffs and merged lists

2023-03-01 12:00

Embedded Linux distributions

Results of the online "wish list"

2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached

2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available

OSADL Special Events

OSADL Special Events

COOL - Compact OSADL Online Lectures

Online event

What is COOL?

COOL - Compact OSADL Online Lectures: Open Source meets Industry

  • COOL is an OSADL webinar series.
  • COOL takes place regularly once a month and covers new and state-of-the-art topics on Open Source software in industry, either on legal or on technical aspects.
  • COOL editions each consist of two lectures covering a special "Open Source meets industry" topic followed by a discussion round. The first "basic" lecture provides basic knowledge with regard to the respective topic and the second "advanced" lecture dives deeper into the topic and highlights special aspects. The discussion round gives all participants the possibility to ask questions and discuss with the respective speakers and the audience.
  • COOL speakers are OSADL experts on the one hand and external specialists on the other hand who kindly agreed to share their expert knowledge on the respective topic.
  • COOL is a virtual event. The lectures are held by live video streams. Speakers will be available for questions and discussion in a video conference which will take part subsequent to the live video streams.
  • COOL in general is designed to provide support how to best and compliantly use Open Source software in industry.

COOL May 2021 edition

Accelerated graphics with real-time. How do they play together?
Wednesday, May 19, 2021, 2pm to 4pm CEST
(This event has passed. Thank you to all attendees who joined COOL virtually)

Agenda COOL May 2021 edition:

2:00pm to 2:45pm CEST: 

Theoretical part: Foundations and underlying principles of Linux real-time, Dr. Carsten Emde, OSADL

2:45pm to 3:30pm CEST: 

Practical part: Results of various test scenarios with computer graphics and real-time at the OSADL QA Farm, Alexander Bähr, OSADL

3:30pm to 4:00pm CEST: 

Discussion and possibility to ask questions

Description COOL May 2021 edition:

It is well known that real-time systems are rather difficult to evaluate and to ensure that they always meet the requirements. This is namely due to the fact that even rarely occuring deviations from the requirement may make a real-time system unusable. If during a particular measuring interval such failures do not occur then it may not be excluded that they occur at another time. This is why real-time measurements should be undertaken under as many different conditions as possible and during relatively long time intervals. However, even when doing so, real-time behaviour can never be proven but only established with a given probability. These difficulties are the reason why OSADL is running a test center, the so-called OSADL QA Farm, to gain as much information as possible on a wide variety of embedded systems that are equippped with a PREEMPT_RT enabled Linux kernel. Among these measurements, the interference between accelerated graphics and real-time behaviour is also tested extensively. Over the last couple of years, unfortunately, it was observed that the higher the graphics performance is, the more negative influcences on real-time responsibility are observed. These observations should be taken into consideration when designing future real-time sytsems with a graphical user interface running on the same system.

This COOL technical edition will focus on the interference between running programs that use accelerated graphics and the real-time behaviour of the system. In a first theoretical approach, a short refresher session is included to provide general condition of a real-time system, how to configure and install it, how to ensure that it is, in fact, real-time and how to integrate the entire system and balance between kernel threads and user threads.

The consecutive practical session will provide and explain results from the everyday's measurements in the OSADL QA Farm with particular respect to the use of accelerated graphics chips. In addition, recommendations will be given how to appropriately configure such systems. Speakers will be Carsten Emde and Alexander Bähr, both of OSADL.

Recommended audience COOL May 2021 edition:

Software developers, software engineers, hardware engineers, system integrators, field application engineers, employees of QA departments, etc.

About the speakers of the COOL May 2021 edition:

- Carsten Emde: Carsten has a long history of professional activities in the field of software development, system integration and training, particularly for embedded system software. He is specialized on graphical user interface, robotics, real-time systems and on legal and business aspects of using Open Source software in industry. He has been managing OSADL since its foundation in 2005.

- Alexander Bähr: Alexander is a state certified technician with a focus on control engineering. Since his youth he has been enthusiastic about electronics and data processing, especially Linux and Open Source. During his further professional activity with the main focus on measurement technology and its data processing, he has successfully used the various options of Open Source software in his professional environment for many years. Now he works as a technical computer scientist at the Open Source Automation Development Lab (OSADL) eG.

Upcoming COOL webinars

Upcoming COOL webinars in the first half of 2024:

  • May to August 2024: COOL summer break
  • COOL will be continued in September 2024 (more information will be available here soon)

Past COOL webinars

(Click on title to expand display.)






Please click on the respective COOL edition in order to display the full agenda and more details about the lectures and the respective guest speakers.

Download of COOL overview September - December 2023 as PDF file (v4)
Download of COOL overview January to May 2023 as PDF file
Download of COOL overview September to December 2022 as PDF file
Download of COOL overview January to May 2022 (new - v7) as PDF file
Download of COOL overview September - December 2021 as PDF file
Download of COOL overview January - May 2021 as PDF file

COOL conference language

The COOL sessions will be in English language.

COOL registration

Please use the online registration form to register for a particular COOL edition: Online registration form.
The access data will be sent to the registered participants shortly before the event.

COOL participation fee

Participation in COOL is free of charge.

COOL feedback

We would appreciate if participants of COOL completed and submitted the following feedback questionnaire in order to better meet their requirements and consider their suggestions in future events: Feedback sheet. Thanks in advance.

COOL presentations

The presentations and video clips of COOL will be made available after the event. Material of basic lectures will be publicly available, material of advanced lectures will be available exclusively for OSADL members or participants with login.

COOL Presentations and video clips (Member or participant login required to display material of advanced lectures)

Privacy policy

When you register for participation in the event you agree that the personal data you enter in the registration form will be processed at OSADL as necessary (see our privacy policy).

You may revoke this agreement at any time by email, mail or phone using the communication data provided at the imprint page, but this will also cancel your registration.


Please do not hesitate to contact us in case you have further questions:
Andrea Ruf
Phone.: +49 6221 98504 13