Starting the debugger when an error occurs
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Enter
mpirun ... a.out -mpedbg(requires mpich built with -mpedbg option; do -mpiversion and look for -mpedbg option).
![](/sites/default/files/docs/mpich/userguide/previous.jpg)
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Up: Debugging MPI programs Next: Attaching debugger to a running program Previous: Starting jobs with a debugger