Iterative Linear Solvers and Parallelization

This course will be provided On-site. Please refer to our Covid rules.

This course is planned to take place at HLRS but might be cancelled or provided as a reduced ONLINE course (using Zoom) if necessary by pandemic rules.

The focus is on iterative and parallel solvers, the parallel programming models MPI and OpenMP, and the parallel middleware PETSc. Thereby, different modern Krylov Subspace Methods (CG, GMRES, BiCGSTAB, ...) as well as highly efficient preconditioning techniques are presented in the context of real life applications. Hands-on sessions (in C, Fortran and Python) will allow users to immediately test and understand the basic constructs of iterative solvers, the Message Passing Interface (MPI) and the shared memory directives of OpenMP (in C and Fortran). This course provides scientific training in Computational Science, and in addition, the scientific exchange of the participants among themselves. It is organized by HLRS, IAG, Uni. Kassel, and SFB/TRR30.


HLRS, University of Stuttgart
Nobelstraße 19
70569 Stuttgart, Germany
Room 0.439 / Rühle Saal
Location and nearby accommodations

Start date

Mar 20, 2023

End date

Mar 24, 2023



Entry level


Course subject areas

Programming Languages for Scientific Computing



Numerical Methods

Back to list

Prerequisites and content levels

  • Monday+Tuesday: Unix / C or Fortran (MPI: or Python)
  • Wednesday+Thursday: Basics of linear algebra / MATLAB or GNU Octave
  • Friday: Unix / C or Fortran
Content levels:
  • Basic: 11 hours 30 minutes
  • Intermediate: 5 hours
  • Advanced: 1 hour 30 minutes
  • Community: 17 hours

Learn more about course curricula and content levels.



See link to detailed program.

On the evening of the first day of the course there will be a social event with a tour of Stuttgart followed by a visit to a restaurant (dinner must be paid for by you).


Each participant will get a pdf of the slides.

Registration information

Register via the button at the top of this page.
We encourage you to register to the waiting list if the course is full. Places might become available.

Registration closes on March 5, 2023 (extended deadline).

Late registrations after the deadline are still possible according to the course capacity.


  • Students without master’s degree or equivalent: 40 Euro
  • PhD students or employees at a German university or public research institute: 90 Euro
  • PhD students or employees at a university or public research institute in an EU, EU-associated or PRACE country other than Germany: 180 Euro
  • PhD students or employees at a university or public research institute outside of EU, EU-associated or PRACE countries: 360 Euro
  • Other participants, e.g., from industry, other public service providers, or government: 960 Euro

Link to the EU and EU-associated (Horizon Europe), and PRACE countries.

Our course fees include coffee breaks (in classroom courses only).

On-site course & COVID rules

Besides the content of the training itself, another important aspect of this event is the scientific exchange among the participants. We try to facilitate such communication by

  • a social event on the evening of the first course day,
  • offering common coffee and lunch breaks and
  • working together in groups of two during the exercises (if desired by the individual participants and permitted by the COVID-19 rules).

By registering you agree to adhere to the COVID-19 regulations of the University of Stuttgart that are in effect at the time of the course. For more information, see  the COVID-19 informations and the Hygiene Concept of the University of Stuttgart.

We 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 as an online course.


Lucienne Dettki phone 0711 685 63894, dettki(at)


HLRS is part of the Gauss Centre for Supercomputing (GCS), which is one of the six PRACE Advanced Training Centres (PATCs) that started in Feb. 2012.

HLRS is also member of the Baden-Württemberg initiative bwHPC.

This course is also provided within the framework of the bwHPC training program. This course is not part of the PATC curriculum and is not sponsored by the PATC program.

Further courses

See the training overview and the Supercomputing Academy pages.

Related training

All training

September 16 - 20, 2024

Stuttgart, Germany

September 17 - 18, 2024

Garching near Munich, Germany

October 14 - 18, 2024

Stuttgart, Germany

December 02 - 05, 2024

Online by JSC