Most HPC systems are clusters of shared memory nodes. To use such systems efficiently both memory consumption and communication time has to be optimized. Therefore, hybrid programming may combine the distributed memory parallelization on the node interconnect (e.g., with MPI) with the shared memory parallelization inside of each node (e.g., with OpenMP or MPI-3.0 shared memory).
This course analyzes the strengths and weaknesses of several parallel programming models on clusters of SMP nodes. Multi-socket-multi-core systems in highly parallel environments are given special consideration. MPI-3.0 has introduced a new shared memory programming interface, which can be combined with inter-node MPI communication. It can be used for direct neighbor accesses similar to OpenMP or for direct halo copies, and enables new hybrid programming models. These models are compared with various hybrid MPI+OpenMP approaches and pure MPI.
Numerous case studies and micro-benchmarks demonstrate the performance-related aspects of hybrid programming. Hands-on sessions are included on all days. Tools for hybrid programming such as thread/process placement support and performance analysis are presented in a "how-to" section.
This course provides scientific training in Computational Science and, in addition, the scientific exchange of the participants among themselves.
This course is a joint training event of SIDE and EuroCC-Austria, the German and Austrian National Competence Centres for High-Performance Computing. It is organized by the HLRS in cooperation with the VSC Research Center, TU Wien and NHR@FAU.
This hybrid event will take place online and atHLRS, University of StuttgartNobelstraße 1970569 Stuttgart, GermanyRoom 0.439 / Rühle SaalLocation and nearby accommodations
Feb 10, 2026 08:45
Feb 12, 2026 16:30
Hybrid, Stuttgart
English
Advanced
Hardware Accelerators
Parallel Programming
Programming Languages for Scientific Computing
MPI
MPI+OpenMP
OpenMP
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Learn more about course curricula and content levels.
Claudia Blaas-Schenner (VSC Research Center, Vienna University of Technology and EuroCC-Austria),Georg Hager (NHR@FAU, University of Erlangen-Nuremberg),Tobias Haas (HLRS, University of Stuttgart)
This course provides scientific training in Computational Science, focusing on hybrid programming techniques to efficiently optimize memory usage and communication on multi-core, multi-socket HPC systems.
The skill tree provided by the HPC Certification Forum provides
The presentation times listed in the agenda are tentative.----------- PRELIMINARY AGENDA -----------
1st day – Tuesday, 10 February 2026
08:45 Join in09:00 Welcome09:10 Hunter's hardware architecture and its programming models Dr. Christian Simmendinger (HPE) and Igor Pasichnyk (AMD), and Johanna Potyka (AMD)10:00 Break10:15 Introduction to Hybrid Programming in HPC – MPI+X10:45 Programming Models10:50 - MPI + OpenMP11:45 Practical (how to compile and start)12:30 Lunch14:00 - continue: MPI + OpenMP14:45 Break15:00 - continue: MPI + OpenMP15:45 Practical (how to do pinning)16:15 Q & A16:30 End of first day
2nd day – Wednesday, 11 February 2026
08:45 Join in09:00 - continue: MPI + OpenMP09:00 - Case study: Simple 2D stencil smoother09:30 Practical (hybrid through OpenMP parallelization)10:45 Break11:00 - Overlapping Communication and Computation11:30 Practical (taskloops)12:15 - MPI + OpenMP Conclusions12:30 Lunch14:00 - MPI + Accelerators15:00 Break15:15 - MPI + Accelerators (continued)16:15 Q & A16:30 End of second day
3rd day – Thursday, 12 February 2026
08:45 Join in09:00 Programming Models (continued)09:05 - MPI + MPI-3.0 Shared Memory10:00 Break10:15 - MPI Memory Models and Synchronization11:00 Break11:15 - Optimized node to node communication11:35 - Recap - MPI Virtual Topologies12:05 Lunch13:35 - Topology Optimization14:15 Conclusions14:30 Break14:45 Practical (replicated data)16:00 Q & A, Feedback16:30 End of third day (course)
A link to the course material (slides and exercises) will be available at course start
Register via the button at the top of this page.This course will be hybrid, i.e. it will take place at HLRS on-site but it will also be possible to attend online. Participants, online as well as on-site, have to be aware and agree that they might appear in the live video stream taken by a camera in the back of the lecture room or by a webcam on laptops. We strongly recommend to attend this course on-site since on-site attendance is much more effective and efficient in our experience. Therefore we might give priority to on-site over online participants during registration.
Please be aware that the Zoom session will be recorded. You declare that you are aware of and consent to the recording by registering.
Registration closes on Sunday, 1 February 2026.Late registrations after the registration phase are still possible according to the course capacity. We cannot guarantee a cluster account for the hands-on sessions for late registrations.
Students without Master's degree or equivalent. Participants from EU or EuroCC countries only: 0 EURPhD students or employees at a German university or public research institute: 0 EURPhD students or employees at a university or public research institute in an EU or EuroCC country other than Germany: 0 EUR.Other participants, e.g., from industry, other public service providers, or government. Participants from EU or EuroCC countries only: 0 EUR
Our course fee includes coffee breaks (in classroom courses only).
For lists of EU and EuroCC countries have a look at the Horizon Europe and EuroCC website.
Only participants from institutions belonging to these countries can take part in this course.
Tobias Haas phone 0711 685 87223, training(at)hlrs.de
HLRS is part of the Gauss Centre for Supercomputing (GCS), together with JSC in Jülich and LRZ in Garching near Munich. EuroCC@GCS is the German National Competence Centre (NCC) for High-Performance Computing. HLRS is also a member of the Baden-Württemberg initiative bwHPC. Since 2025, HLRS coordinates HammerHAI.
This course is provided within the framework of EuroCC2 and the bwHPC training program.
This is a joint training event of EuroCC@GCS and EuroCC-Austria.
Within the scope of the EuroCC2 project this training is offered free of charge. By participating in a training free of charge, companies receive state-aid corresponding to the regular market-prices listed in the service portfolio. Please note state-aid regulations in Germany.
EuroCC 2 and EuroCC4SEE have received funding from the European High-Performance Computing Joint Undertaking (JU) under grant agreement No 101101903 and No 101191697. The JU receives support from the European Union’s Digital Europe Programme and Germany, Bulgaria, Austria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Greece, Hungary, Ireland, Italy, Lithuania, Latvia, Poland, Portugal, Romania, Slovenia, Spain, Sweden, France, Netherlands, Belgium, Luxembourg, Slovakia, Norway, Türkiye, Republic of North Macedonia, Iceland, Montenegro, Serbia, Bosnia and Herzegovina.
Besides the content of the training itself, an important aspect of this event is the scientific exchange among the participants. We try to facilitate such communication by
See the training overview and the Supercomputing Academy pages.See also information about the HLRS training department and staff.
Oct 13 - 17, 2025
Stuttgart
Oct 21 - 22, 2025
Online
Nov 03 - Dec 05, 2025
Online (flexible)
Nov 20 - Dec 05, 2025
Dec 01 - 04, 2025
