Scalability - smart use of HPC resources

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

1. Intranode and perfect scaling, and how it is unattainable in real calculations,
2. Multinode scaling and parallelization overhead,
3. Hands-on scaling tests,
4. CPU vs GPU power and multiple GPU scaling,
5. 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/;
• an active affiliation at https://portal.plgrid.pl/users/affiliations;
• access to Ares supercomputer,
  • if a participant has the access, no further action,
  • if not, one need to apply at https://portal.plgrid.pl/services/103 and the access will be granted when joining the team (see below),
  • participants are not required to have their own grant allocations;
• access to JupyterHubHPC, apply at https://portal.plgrid.pl/services/110;
• membership in the plggtraining team - the activation link will be sent after registration.

The above prerequisites are required to actively participate in the hands-on exercises.
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 after checking if OpenSSH is installed. We advise against using Putty.

At 10:30 am on 23rd February 2026, a Dry-run will be held. Participants are invited to come to learn how to log in to Ares supercomputer before the training and resolve any problems with the Training Team.

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 17th February 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.