The RISC2 project is organizing a webinar series about “HPC System & Tools”.
In each webinar, it will be presented the state-of-the-art in methods
and tools for setting-up and maintaining HPC hardware and software
infrastructures.

The webinar* “Improving energy-efficiency of High-Performance Computing
clusters” *will take place on *April 26, 2023 | 3 PM. (UTC+1).*

*Summary:* High-Performance Computing centers consume megawatts of
electrical power, which is a limiting factor in building bigger systems
on the path to exascale and post-exascale clusters. Such high power
consumption leads to several challenges including robust power supply
and its network, enormous energy bills, or significant CO2 emissions. To
increase power efficiency, vendors accommodate various heterogeneous
hardware that must be fully utilized by users’ applications, to be used
efficiently. Such requirements may be hard to fulfill, which open a
possibility of limiting the available resources for additional power and
energy savings with no or small performance penalty. The talk will
present best practices on how to grant rights to control hardware
parameters, how to measure the energy consumption of the hardware, and
what can be expected from performing energy-saving activities based on
hardware tuning.

**About the speakers**:

*Lubomir Riha*, Ph.D. is the Head of the Infrastructure Research Lab at
IT4Innovations National Supercomputing Center. Previously he was a
research scientist in the High-Performance Computing Lab at George
Washington University, ECE Department. He received his Ph.D. degree in
Electrical Engineering from the Czech Technical University in Prague,
Czech Republic, and a Ph.D. degree in Computer Science from Bowie State
University, USA. Currently, he is a local principal investigator of two
EuroHPC Centers of Excellence: MAX and SPACE, and two EuroHPC projects:
SCALABLE and EUPEX (designs a prototype of the European Exascale
machine). Previously he was a local PI of the H2020 Center of Excellence
POP2 and H2020-FET HPC READEX projects. His research interests are
optimization of HPC applications, energy-efficient computing,
acceleration of scientific and engineering applications using GPU and
many-core accelerators, and parallel and distributed rendering.

*Ondrej Vysocky* is a Ph.D. candidate at VSB – Technical University of
Ostrava, Czech Republic and at the same time he works at IT4Innovations
in Infrastructure Research Lab. His research is focused on energy
efficiency in high-performance computing. He was an investigator of the
Horizon 2020 READEX project which dealt with the energy efficiency of
parallel applications using dynamic tuning. Since that time, he develops
a MERIC library, a runtime system for energy measurement and hardware
parameters tuning during a parallel application run. Using the library
he is an investigator of several H2020 projects including Performance
Optimisation and Productivity (POP2), or European Pilot for Exascale
(EUPEX). He is also a member of the PowerStack initiative, which works
on a holistic, extensible, and scalable approach of power management.

The registrations are now open:
https://survey.inesctec.pt/index.php/955192?lang=en