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Debugging

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Axel Huebl edited this page May 16, 2014 · 36 revisions

You are here: Home > Developer Documentation > Debugging

This page collects some useful hints about how to debug a hybrid (CUDA + device) parallel (MPI) application.

MPI + Valgrind

Use the OpenMPI supressions list

mpiexec <mpi flags> valgrind --suppressions=$MPI_ROOT/share/openmpi/openmpi-valgrind.supp picongpu ...

MPI + GDB

Login into an interactive shell/batch session with X-forwarding ssh -X. Launch PIConGPU with gdb and trigger start and back trace automatically:

mpiexec <mpi flags> xterm -e gdb -ex r -ex tb --args picongpu ...

CUDA + Valgrind

Check this thread (cuda 2.0) and cudagrind (-> cuda-memcheck)

All wiki entries describe the dev branch. Features may be different in the current master branch.

Before you start please read our README!

PIConGPU is a scientific project. If you present and/or publish scientific results that used PIConGPU, you should set a reference to show your support. Our according up-to-date publication at the time of your publication should be inquired from:

The documentation in this wiki is still not complete and we need your help keeping it up to date. Feel free to help improving this wiki!

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