Shared memory parallelization with OpenMP

Hybrid Course: Shared memory parallelization with OpenMP

27 - 28 April 2023, 09:00 - 16:30 CEST


Course for academia and industry
Organised by VSC Research Center (TU Wien) in cooperation with the High-Performance Computing-Center Stuttgart (HLRS). Funded by EuroCC and EuroCC Austria
Language: English
Location: hybrid (online - Zoom or FH Internet-Raum FH1 at TU Wien)
Price: free

The focus of this 2 days course is on shared memory parallelization with OpenMP for dual-core, multi-core, shared memory, and ccNUMA platforms. This course teaches OpenMP starting from a beginners level. Hands-on sessions (in C and Fortran) will allow users to immediately test and understand the OpenMP directives, environment variables, and library routines. Race-condition debugging tools are also presented.

Content levels: Beginners = 6:00h (50%) + Intermediate = 4:00h (33%) + Advanced = 2:00h (17%)

Note, an additional course on Distributed memory parallelization with the Message Passing Interface (MPI) takes place on the previous three days, registration for both courses can be done on the same registration form.


27 April 2023 (Day 1)

08:45  Join in
09:00    Welcome
09:10    Introduction to modern hardware (talk)
10:10    An overview of OpenMP (talk)
10:35   Coffee
10:50    OpenMP programming and execution model (talk+practical)
12:30   Lunch
13:30    OpenMP worksharing directives (talk+practical) 
15:00   Coffee
15:15    More OpenMP (talk+practical)
16:00    Summary (talk) + Q & A
16:30   End of first day

28 April 2023 (Day 2)

08:45  Join in
09:00    How to write correct OpenMP programs (talk)
09:30    Intel Inspector XE (demo+practical)
10:30   Coffee
10:45    How to write efficient OpenMP programs (talk)
11:00    Heat equation (talk+practical)
12:30   Lunch
13:30    Heat equation (practical — continued)
14:00    Vectorization with OpenMP (talk)
14:25    Thread affinity in OpenMP (talk)
15:00   Coffee
15:15     The taskloop directive (talk+practical)
16:30   End of second day (course)

Course format

This course will be delivered as an HYBRID COURSE, i.e., you can choose either in-person attendance onsite at TU Wien or online participation via Zoom.

If you are planning to travel to Vienna for in-person attendance, we strongly recommend to choose travel options and hotels with the possibility to cancel (even close to the event) because we might be forced to deliver the course entirely online if Covid strikes back.


For the hands-on sessions you should be able to program in either C/C++ or Fortran and if you do the exercises on the VSC you should know how to work on the Unix/Linux command line.

Hands-on labs

Participants can choose between using their own laptops or any system they have access to that provides an OpenMP enabled compiler for their preferred programming language C/C++ or Fortran. Alternatively, participants can ask for a training user account at the VSC for the duration of the course.

Accepted participants will be contacted a few days before the course and asked to do a short PRE-ASSIGNMENT that has to be completed before the course starts.


Lukas Einkemmer, Philipp Gschwandtner, and Martina Prugger (University of Innsbruck),
Claudia Blaas-Schenner (VSC Research Center, TU Wien),
TBD (tutors; VSC Research Center, TU Wien)



Date, time, and location:

27.-28.04.2023, 09:00 - 16:30 CEST,
FH Internet-Raum FH1 (TU Wien, Wiedner Hauptstraße 8-10, ground floor, red area)
OR live online course via Zoom (hybrid course format).

Prices and eligibility

This course is is funded by EuroCC. Therefore, the course is open and free of charge for participants from academia and industry from the Member States (MS) of the European Union (EU) and Associated/Other Countries to the Horizon 2020 programme.


Registration for this course is closed (fully booked)!

Please register with your official e-mail address to prove your affiliation.

Registration period is from 6 February to 2 April 2023, and follows the "first come – first served" principle.

Following your successful registration, you will receive further information approx. 1 week before the course.

For the hybrid course we can take a maximum of 40 persons. Additional registrations will be added to a waiting list.

Note, an additional course on Distributed memory parallelization with the Message Passing Interface (MPI) takes place on the previous three days, registration for both courses can be done on the same registration form.

Course material

OpenMP – Course Material

Please provide your feedback (at the end of the course) here:

Course organiser / contact:

Claudia Blaas-Schenner and Ulrike Faltin:


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