Allinea DDT is a powerful parallel debugger with an easy-to-use GUI. You can run it by loading its module (module load ddt/3.2) and entering “ddt”. Some introduction level information can be found in “https://pace.gatech.edu/workshop/DebuggingProfiling.pdf“.
We extended our single-user 32-procs license to multi-user 128 procs. Aside from the increased number of processors, this license allows multiple users to use the software at the same time, as long as the total number of processors do not exceed 128. E.g., two users can use the software with 64procs run each.
Happy debugging!