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Difference between revisions of "DDT"

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=== starting the application from inside DDT ===
 
=== starting the application from inside DDT ===
  
Set up the environment
+
Get an interactive job and set up the environment within
 
{{Command| command =
 
{{Command| command =
 
module load debugger/forge<br>
 
module load debugger/forge<br>

Revision as of 13:18, 31 October 2018

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

Get an interactive job and set up the environment within

module load debugger/forge
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.

Hazel Hen special

To debug a program with ddt on Hazel Hen you have to use the Reverse Connection feature. Therefore first launch ddt on a login node:

module load forge
ddt


Load the forge module in your job script or interactive job and modify your aprun command line therein

module load forge
ddt --connect aprun ...


See also

External links