NERSCPowering Scientific Discovery for 50 Years

OLCF Crusher User Experiences, Dec 2022

December 1, 2022


This two-session Crusher User Experience event is part of the OLCF’s Preparing for Frontier training series, and is open to NERSC users. 

  • Session 1: Lessons & Tips from OLCF’s Crusher Hackathons, 11 am - 12 pm (Pacific time), Thursday, December 1
  • Session 2: Crusher User-Experience Talks, 11 am -12:30 pm (Pacific Time), Friday, December 9


Crusher is the OLCF’s 192-node test-and-development system with identical node architecture as Frontier. It serves as the main development platform for the Frontier Center for Accelerated Application Readiness (CAAR) and Exascale Computing Project (ECP) teams as they prepare their applications and software for Frontier.

As part of the training program for these early-access users, the OLCF, HPE, AMD, and ECP held Crusher hackathons to help these teams with porting, profiling, optimizing, and debugging along the way. In Session 1, we will cover some of the lessons learned and tips from our experiences at these hackathons. 

In Session 2, we will hear from 3 of these application teams, who will share their experiences porting their applications from OLCF Summit to Crusher, optimizing for the platform, and giving some helpful tips to future users of the Frontier system. 

  • Cholla – GPU-based hydrodynamics code
  • NuCCOR – Nuclear physics application for deciphering the structure and reactions of atomic nuclei
  • Lattice QCD – Nuclear physics application used to calculate interactions of sub-nuclear elementary particles – quarks & gluons.


Registration is required for session 1 and session 2 individually for remote participation.  

Presentation Materials