Scalability - Smart Use of HPC Resources
online
The training focuses on running and analyzing the scalability tests.
Scalability tests allow to tune the amount of resources for the job being run. During this training you will learn what scalability tests are and how to interpret their results. Then how to apply that knowledge to your calculations.
Level
Target audience
Training is intended for users who started running their own calculations and need to learn how to give the right amount of resources to the job at ACC Cyfronet AGH.
Agenda
- Intranode and perfect scaling, and how it is unattainable in real calculations,
- Multinode scaling and parallelization overhead,
- Hands-on scaling tests,
- CPU vs GPU power and multiple GPU scaling,
- Real life case: specific Ares to Athena transfer issue analyzed
Requirements
We recommend doing this training after familiarizing with the contents of Running Calculations the HPC way training provided at ACC Cyfronet AGH.
Technical prerequisites:
- PLGrid account at https://portal.plgrid.pl/
- specify your PLGrid login in the registration form,
- if you don't have it please follow our guide: https://guide.plgrid.pl/en/portal-for-science/profile;
- an active affiliation at https://portal.plgrid.pl/users/affiliations;
- accepting the invitation to the training in PLGrid Portal at https://portal.plgrid.pl/training_invitations once it is sent by the Training Team, for security reasons, the invitation will be sent no sooner than a couple of days before the training;
- SSH connection through Windows Terminal or other means (see below);
- attending the dry-run (see below).
In case of no active affiliation or PLGrid account, please contact the organisers at training@cyfronet.pl.
Participants' computers should be equipped with software that allows SSH connections. On Windows, it is recommended to use Windows Terminal (not to be confused with Powershell after checking if OpenSSH is installed (run ssh -V in the terminal). We advise against using Putty.
At 10:00 am on 17th August 2026, a dry-run will be held - participation in the dry-run is a prerequisite to join the training, attendance will be marked based on Zoom participant list.. Participants will learn how to log in to the Ares supercomputer before the training and resolve any problems with the Training Team. In case you cannot come to the dry-run, please inform us directly at training@cyfronet.pl, otherwise your registration will be cancelled. Please attend the dry-run even if your affiliation is not active.
Venue
The workshop will be conducted online on the Zoom platform. The meeting link will be sent to registered participants.
Language
English
Duration
3 hours
Registration
The Registration and the Waiting list close automatically after 14th August 2026. The Registration may close prematurely if the limit number of participants is hit beforehand, but the Waiting List will be available until the deadline above.
Acknowledgements
This event is partially funded by the EuroCC 2 project.
The project has received funding from the European High-Performance Computing Joint Undertaking (JU) under grant agreement No 101101903. The JU receives support from the Digital Europe Programme and Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, and Türkiye.
ACC Cyfronet AGH