ONLINE COURSE: Hawk Porting and Optimization Workshop

Research & Science Enterprises & SME Optimization & Scalability
ONLINE COURSE: Hawk Porting and Optimization Workshop


Due to the Covid-19 pandemic, course will no longer be held on March 30 - April 3, but instead it will be offered online (via Zoom) on April 27 - 30.

In this workshop, users can port their applications to HLRS' new AMD-based HPE Apollo supercomputer "Hawk" as well as optimize it with respect to node-level performance and scaling. In doing so, users will be assisted by HLRS, HPE and AMD specialists. By optimizing their codes, users can raise the volume as well as quality of their scientific findings while the costs (in terms of core hours) remain constant.

This edition of our optimization workshop series is dedicated to small and mid-sized projects with a granted budget of up to 50M Core-H on Hazel Hen, in particular those using applications without touching the code themselves (community codes, ISV codes, etc.).

Target audience: small and mid-sized projects already running on Hazel Hen.


By means of this workshop, you can tweak compiler flags, environment settings, etc. in order to make your code run faster. According to our experience gathered in prior workshops, these “low-hanging fruits” can give you a significant speedup but require only little effort.

Every attending group will be supported during the entire workshop by a dedicated member of the HLRS user support group. In addition, HPE and AMD specialists will be available to help with issues specific to e.g. MPI and the processor.

Due to the Covid-19 pandemic, we decided to provide this workshop in an online fashion. In order to do so, we will setup Zoom video conferences which enable participants to communicate as well as share screens and remote control applications with support staff, hence providing the same options of interaction as meeting in person. If this concept turns out to be successful, we will provide it in addition to our regular support actions in the future.

Daily schedule:

(it's possible to merely book individual days)

all days:

            09:00 - 17:00 Workshop


In order to attend the workshop, you should already have an account on Hawk. Furthermore, we require that you bring your application including a test case that adheres to the following guideline:

    • number of cores:
      • In order to be representative, the test case should be in size comparable to your current and maybe future production runs.
      • In order to save valuable resources, it should however be as small as possible.
      • So take into account to reduce the size of your test case as long as the profile stays almost constant. This can often be achieved by reducing the simulated domain and keeping the computational load per core constant ("weak down scaling").
    •  wall time:
      • In order to allow for a productive as well as effective workflow, the wall time should be a few minutes only.
      • At the same time, it should cover all important parts of the code, including I/O.
      • So take into account to reduce the number of simulated time steps.

German (in English, if required).

Course material
Course material

Slides and recordings of prior talks on the processor, network, module environment and batch system of Hawk are available via


HLRS, HPE and AMD user support staff


via online registration form

Extended Deadline

for registration is April 24, 2020 (extended deadline)

Late registrations after the deadline are still possible.


Students without Diploma/Master: 0 EUR
Students with Diploma/Master (PhD students) at German universities: 0 EUR
Members of German universities and public research institutes: 0 EUR
Members of universities and public research institutes within EU or PRACE member countries: 0 EUR.
Members of other universities and public research institutes: 120 EUR
Others: 400 EUR

(includes coffee breaks)


Travel Information and Accommodation

see our How to find us page.


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-C5.
This course is provided within the framework of the bwHPC-C5 user support. This course is not part of the PATC curriculum and is not sponsored by the PATC program.

Local Organizer

Rolf Rabenseifner phone 0711 685 65530,
Björn Dick phone 0711 685 87189, dick
Khatuna Kakhiani phone 0711 685 65796,

Shortcut-URL & Course Number