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DDT: Difference between revisions

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(Added simple example and special for DDT + Open MPI on Nehalem Cluster)
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==== Cray XT5m special ====
If your program does IO take care to start an interactive session from the correct directory.





Revision as of 11:54, 31 May 2010

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.


Cray XT5m special

If your program does IO take care to start an interactive session from the correct directory.


See also

External links