Pgdbg/en: Difference between revisions

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PGDBG is a powerful and simple tool for debugging both MPI-parallel and OpenMP thread-parallel Linux applications. It is included in the PGI compiler package and configured for OpenMP thread-parallel debugging.

For the most of the C, C++, or Fortran 77 codes one can use a regular GNU debugger such as GDB. However, the Fortran 90/95 programs are not handled very well by the GDB. The Portland Group has developed a debugger called [https://www.pgroup.com/products/tools.htm/pgdbg.htm pgdbg]  which is more suited for such codes. Pgdbg is provided in two modes: a graphical mode with the enabled X11 forwarding or a text mode.  

Using PGDBG usually consists of two steps:

# '''Compilation''': Compile the code with the debugging enabled

{{Command|pgcc -g program.c -o program}}

Once your code is compiled with the proper options, you can run the PGDBG for the analysis. The debugger's default user interface is a graphical user interface or GUI. However, if for some reasons you don't want to run in GUI or don't have X11 forwarding, you can run pgdbg in a text mode by adding an extra option "-text" :

{{Command|pgdbg -text program arg1 arg2}}

=== Debug information tab ===

Debug information tabs take up the lower half of the debugger GUI. Each of these tabs provides a particular function or view of debug information. The following sections discuss the tabs as they appear from left-to-right in the GUI’s default configuration.