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Tentative schedule

DAY 1 - 9 November 2026
09:00 CET
10:00 EET 		Welcome and Introduction
09:15 CET
10:15 EET 		LUMI Architecture
Some insight in the hardware of LUMI is necessary to understand what LUMI can do and what it cannot do, and to understand how an application can be mapped upon the machine for optimal performance.
10:10 CET
11:10 EET 		HPE Cray Programming Environment
As Linux itself is not a complete supercomputer operating system, many components that are essential for the proper functioning of a supercomputer are separate packages (such as the Slurm scheduler discussed on day 2) or part of programming environments. It is important to understand the consequences of this, even if all you want is to simply run a program.
11:15 CET
12:15 EET 		Break and networking (20 minutes)
11:35 CET
12:35 EET 		Getting Access to LUMI
We discuss the options to log on to LUMI and to transfer data.
12:05 CET
13:05 EET 		Exercises (session #1)
12:30 CET
13:30 EET 		Lunch break (60 minutes)
13:30 CET
14:30 EET 		Modules on LUMI
LUMI uses Lmod, but as Lmod can be configured in different ways, even an experienced Lmod user can learn from this presentation how we use modules on LUMI and how modules can be found.
14:15 CET
15:15 EET 		Exercises (session #2)
14:45 CET
15:45 EET 		Break and networking (20 minutes)
15:05 CET
16:05 EET 		LUMI Software Stacks
In this presentation we discuss how application software is made available to users of LUMI. For users of smaller Tier-2 clusters with large support teams compared to the user base of the machine, the approach taken on LUMI may be a bit unusual...
16:05 CET
17:05 EET 		Exercises (session #3)
16:30 CET
17:30 EET 		LUMI Support and Documentation
Where can I find documentation or get training, and which support services are available for what problems? And how can I formulate a support ticket so that I can get a quick answer without much back-and-forth mailing?
16:55 CET
17:55 EET 		Wrap-up of the day
17:00 CET
18:00 EET 		Free Q&A
17:30 CET
18:30 EET 		End of day 1
DAY 2 - 10 mNovember 2026
09:00 CET
10:00 EET 		Short welcome, recap and plan for the day
09:15 CET
10:15 EET 		Slurm on LUMI
Slurm is the batch job scheduler used on LUMI. As no two Slurm configurations are identical, even an experienced Slurm user should have a quick look at the notes of this talk to understand the particular configuration on LUMI.
10:45 CET
11:45 EET 		Break and networking (20 minutes)
11:05 CET
12:05 EET 		Process and Thread Distribution and Binding
To get good performance on hardware with a strong hierarchy as AMD EPYC processors and GPUs, it is important to map processes and threads properly on the hardware. This talk discusses the various mechanisms available on LUMI for this.
12:05 CET
13:05 EET 		Exercises (session #4)
12:30 CET
13:30 EET 		Lunch break (60 minutes)
13:30 CET
14:30 EET 		Using Lustre
Lustre is a parallel file system and the main file system on LUMI. It is important to realise what the strengths and weaknesses of Lustre at the scale of a machine as LUMI are and how to use it properly and not disturb the work of other users.
14:05 CET
15:05 EET 		Using object storage
LUMI also has an object storage system. It is useful as a staging location to transfer data to LUMI, but some programs may also benefit from accessing the object storage directly.
14:50 CET
15:50 EET 		Exercises (session #5)
15:20 CET
16:20 EET 		Break
15:40 CET
16:40 EET 		Containers on LUMI-C and LUMI-G
Presenter: Kurt Lust
Containers are a way on LUMI to deal with the too-many-small-files software installations on LUMI, e.g., large Python or Conda installations. They are also a way to install software that is hard to compile, e.g., because no source code is available or because there are simply too many dependencies.
16:45 CET
17:45 EET 		What Else? A brief discussion about what else LUST offers, what is not covered in this course, and how you can learn about it.
17:00 CET
18:00 EET 		Free Q&A
17:30 CET
18:30 EET 		End of day 2