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    DDT

    Arm DDT is a parallel debugger with a graphical user interface (GUI).

    Available

    Puhti

    License

    Usage is possible for both academic and commercial purposes.

    Usage

    Set up the debugger environment

    module load ddt

    Compile the application to be debugged, for example a Fortran, C or C++ program, with the compiler option -g to enable generation of debug information.

    Here are a few examples of debug sessions (MPI debug sessions). The first requests 40 processes in a single node and the second 40 processes divided into two nodes:

    salloc --nodes=1 --ntasks-per-node=40 --time=00:30:00 --partition=small --account=<project_id> ddt srun ./debug_enabled_code
salloc --nodes=2 --ntasks-per-node=20 --time=00:30:00 --partition=large --account=<project_id> ddt srun ./debug_enabled_code

    Documentation

    Last edited Fri Jul 31 2020