DKRZ Tech Talks

Debugging with DDT

Name: Debugging with DDT
Start: 2021-03-16T15:15:00+01:00
End: 2021-03-16T16:15:00+01:00
Location: No location set

by Suyash Sharma (ARM)

Tuesday 16 Mar 2021, 15:15 → 16:15 Europe/Berlin

Description

Recording on Youtube (external site)

This talk will provide an introduction to the use of DDT for debugging parallel applications on the mistral supercomputer.

Debugging parallel climate models can be a daunting task, but it becomes much easier once you can study the state of all model variables at the moment of the crash, or any other unexpected behavior. On Mistral, ARM DDT provides a user-friendly GUI for debugging simulations with up to 1000 MPI threads, and on Levante, we will keep providing DDT. In this Tech Talk, Suyash Sharma of ARM will introduce the basic concepts of using a debugger and demonstrate how DDT can provide insights into a real-world ICON crash.