DDT

Allinea DDT helps developers fix bugs quickly - from the desktop to the largest supercomputer. The most scalable parallel debugger for debugging MPI and multi-threaded codes, DDT leads the world in performance and usability.

Developer: Allinea Platforms: NEC Nehalem Cluster Category: Debugger License: Commercial Website: Allinea homepage

Usage

DDT is available through modules

module load debugger/ddt

Note: Do not forget to compile your application with debugging info (-g option)

Examples

starting the application from inside DDT

Set up the environment

module load debugger/ddt module load mpi/openmpi

Compile your application

mpicc -g your_app.c -o your_app

Start DDT:

ddt your_app

Select the right MPI Implementation in the Options and run your program.

Nec Nehalem Cluster special

If you want to debug a parallel Program using Open MPI with DDT on the NEC Nehalem Cluster select 'OpenMPI (Compatibility)' as the desired MPI Implementation.

See also

• Software Development Tools, Compilers & Libraries

External links

• Allinea homepage
• DDT Demos
• DDT User Guide