MNHACK25: 7th MareNostrum Hackathon

MNHack is an opportunity for HPC application developers and users to deploy, test, port, and optimize their codes on cutting-edge platforms provided by the Barcelona Supercomputing Center (BSC). Unlike traditional competitive hackathons, MNHack is a non-competitive, hands-on event designed to help users improve their applications with the support of world-class mentors. This edition introduces two specialized non-simultaneous tracks, allowing participants to choose the environment that best suits their goals (or both):

Track 1: MN5. from 13 to 15 October, 2025

Participants will gain access to Europe’s newest pre-exascale supercomputer, Marenostrum 5, including both general-purpose and accelerated computing resources. This track is ideal for those looking to:

• Deploy and scale up HPC applications
• Optimize performance on cutting-edge CPU/GPU hardware
• Analyze behavior using BSC tools such as Extrae, Paraver, and Dimemas
• Leverage programming models like MPI, OpenMP, CUDA, OpenACC, and HIP

Track 2: RISC-V, from 16 to 17 October, 2025

This track is dedicated to exploring and optimizing HPC applications on RISC-V-based platforms, offering a hands-on experience with an open hardware architecture that is gaining traction in the HPC space. Participants can:

• Port and test their applications on RISC-V hardware
• Explore low-level performance tuning opportunities
• Experiment with custom toolchains and runtime systems
• Collaborate on open-source ecosystem development

Participants in both tracks will receive help based on their needs, including programming models, tools, hardware platforms, and dev-ops. Experts from BSC will be available to provide guidance throughout the hackathon. You can participate individually or in a team of up to 4 people. You just need an HPC application and to be ready to have a whale of a time.

Important Information

• Registration deadline: 23 September 2025
• Notification of acceptance: The week after your submission. Upon acceptance, participants have to confirm their attendance within the next 10 days, if not, the application will be dismissed.
• Date and place:
  • MN5 Track:
    • 13/Oct/2025 Time: 09:00 - 15/Oct/2025 Time: 18:00
    • BSC-Repsol building, Auditorium (S1-2-1 room).
    • Up to 54 people.
  • RISC-V Track:
    • 16/Oct/2025 Time: 09:00 - 17/Oct/2025 Time: 18:00
    • Capella building, Severo Ochoa room.
    • Up to 24 people.
• Teams: Up to four people.
• Experts: Provided by BSC and third-party institutions.
• Cost: Free of charge.
• Contact: mnhack[at]bsc.es.

Technical talks