CSC Summer School in High-Performance Computing 2026

This is the material repository for the High-Performance Computing Summer School organized by CSC – IT Center for Science.

Practical information

The practical information is in the wiki.

Presentation slides

The slides are available in

• GitHub Pages: https://csc-training.github.io/summerschool/
• CSC Allas: https://a3s.fi/summerschool/site/index.html

Exercises

• Feel free to fork this repository to work through the exercises.
• General instructions: LUMI and Mahti
• Session-specific material linked in the schedule below

Schedule

In addition to lunch, dinner, and refreshments in the daily schedule, we have every day available next to the lecture room:

• 09:00–17:00 Coffee, tea, water
• 20:30– Evening snack

Day 1, Tue 23.6.

Time	Topic
09:00	Transport from Helsinki city
10:00	Welcome to Nuuksio
10:30	Introduction to HPC
12:00	Lunch + Hotel check-in
13:30	Introduction to HPC
15:00	Refreshments (available until 17:00)
15:30	Introduction to HPC
18:00	Dinner (available until 19:30)
19:30	Get together & Lightning talks in room Loimu

Day 2, Wed 24.6.

Time	Topic
07:45	Breakfast
09:00	MPI: Point-to-point communication I
12:00	Lunch
13:00	MPI: Point-to-point communication II
15:00	Refreshments (available until 17:00)
15:30	MPI: Nonblocking communication
16:30	Outdoor activity: Nuuksio Olympic Games (meetup at the Hotel lobby)
18:00	Dinner (available until 20:00)
19:00	Exercises (optional)
20:00	Saunas, grilling, and refreshments at the lake (sauna heater warm until 21:30)

Day 3, Thu 25.6.

Time	Topic
07:45	Breakfast
09:00	MPI: Collective communication I
12:00	Lunch
13:00	MPI: Collective communication II
15:00	Refreshments (available until 17:00)
15:30	MPI: Further topics
17:00	Outdoor activity
18:00	Dinner (available until 20:00)
19:00	Exercises (optional)
20:00	Relax

Day 4, Fri 26.6.

Time	Topic
07:45	Breakfast
09:00	OpenMP
12:00	Lunch
13:00	OpenMP
15:00	Refreshments (available until 17:00)
15:30	MPI + OpenMP
17:00	Outdoor activity
18:00	Dinner (available until 20:00)
19:00	Exercises (optional)
20:00	Saunas, grilling, and refreshments at the lake (sauna heater warm until 21:30)

Day 5, Sat 27.6.

Time	Topic
07:45	Breakfast
09:00	Parallel algorithms
10:00	Parallel I/O
12:00	Lunch
13:00	Exercises (optional)
15:00	Refreshments available as usual
15:30	Free time / Visit to beehives
18:00	Dinner (available until 20:00)
19:00	Free time
20:00	Relax

Day 6, Sun 28.6.

Time	Topic
07:45	Breakfast
09:00	GPU programming
12:00	Lunch
13:00	GPU programming
15:00	Refreshments (available until 17:00)
15:30	GPU programming
17:00	Outdoor activity
18:00	Dinner (available until 20:00)
19:00	Free time
20:00	Relax

Day 7, Mon 29.6.

Time	Topic
07:45	Breakfast
09:00	GPU programming
12:00	Lunch
13:00	GPU programming
15:00	Refreshments (available until 17:00)
15:30	GPU programming
17:00	Outdoor activity
18:00	Dinner (available until 20:00)
19:00	Exercises (optional)
20:00	Saunas, grilling, and refreshments at the lake (sauna heater warm until 21:30)

Day 8, Tue 30.6.

Time	Topic
07:45	Breakfast
09:00	OpenMP offload for GPU programming
11:00	Multi-GPU programming
12:00	Lunch
13:00	Multi-GPU programming
15:00	Refreshments (available until 17:00)
15:30	Multi-GPU programming
17:00	Outdoor activity
18:00	Dinner (available until 20:00)
19:00	Exercises (optional)
20:00	Relax

Day 9, Wed 1.7.

Time	Topic
07:45	Breakfast
09:00	HPC in AI
11:50	Group photo
12:00	Lunch
13:00	Exercises
15:00	Refreshments (available until 16:00)
15:30	Exercises
16:00	Outdoor activity: Boating at the lake (meetup at the Hotel lobby)
19:00	Special dinner and farewell party in room Hopeapaju

Day 10, Thu 2.7.

Time	Topic
07:45	Breakfast
09:00	Time to pack. Hotel check-out by 10:00 (luggage can be left in the lecture room)
09:30	Putting It All Together: HPC Applications at Scale
11:30	Closing
12:00	Lunch
13:00	Transport to Helsinki city

Previous years

Material from previous years can be found in releases.