Debugging with GDB
compile programme with -g -o0 (or ./configure --enable-debug)
For serial programme (or MPI running with 1 process)
To debug MPI application in parallel add this line to somewhere in the code:
if (!rank) getc(stdin); MPI_Barrier(MPI_COMM_WORLD);
Then run the code and it will hang on that line.
If you get the gdb error:
fupermod_....c: No such file or directory.
Run the following command to add to gdb's source directories to be searched: