[ptp-user] SDM: is gdb version > 6.3 required for Fortran debugging?

[Brian Bonnlander <bonnland@xxxxxxxx>]

Hi, 

On Dec 2, 2011, at 1:51 PM, Brian Bonnlander wrote:

Hello PTP Developers,

I have just started using PTP, so it's certain possible that I'm missing something, but I'm having some problems using the SDM debugger.   I've managed to compile the MPI-Fortran "Hello World" example locally on my OSX machine using the PGI compiler:

mpif90 -f90=pgf90 -g -o bin/mpi_fortran src/mpi_fortran.f90

I compiled SDM for my machine and got my Resource Manager to start successfully.   But when I try to create a breakpoint, I get 

Is it possible to debug a program compiled with the PGI compiler using gdb? The SDM uses gdb for debugging, so this needs to be supported for it to work properly.

I don't know how to test whether a parallel program can run using gdb; as far as I know it can debug only single-process programs.   However, I may be using an old version of gdb that does not completely support fortran. The Snow Leopard installed version is 6.3.50-20050815.    Any idea if this version is too old?  

For completeness, I will just mention that when I type "gdb mpi_fortran" on my HelloWorld executable and then "run" I get the same output as when I run the executable without going through "mpirun": 

$ gdb mpi_fortran 

GNU gdb 6.3.50-20050815 (Apple version gdb-1515) (Sat Jan 15 08:33:48 UTC 2011)

Copyright 2004 Free Software Foundation, Inc.

GDB is free software, covered by the GNU General Public License, and you are

welcome to change it and/or distribute copies of it under certain conditions.

Type "show copying" to see the conditions.

There is absolutely no warranty for GDB.  Type "show warranty" for details.

This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries .. done

(gdb) run

Starting program: /users/bonnland/src/eclipseProjects/mpi_fortran/bin/mpi_fortran 

Reading symbols for shared libraries +. done

Error from ioctl = 6

 Error is: : Device not configured

 Hello MPI World From process 0: Num processes:             1

FORTRAN STOP

Program exited normally.

(gdb) 

The only other "strange" thing I've noticed in trying to configure the Resource Manager is:   Each time I start Eclipse, I get the following error dialog:

<PastedGraphic-3.tiff>

The reason appears to be that Eclipse never stores the chosen installation location is for the MPICH2 commands.   That is, the following dialog always starts with a blank Installation Location, even when I change it, click "Finish", and return to this dialog in the same session.   

I have to browse to the same directory each time I start Eclipse, after which the problem appears to go away.     Strangely, though this field in the dialog box is blank each time I bring it up, the resource manager continues to start up correctly after I browse to the MPICH2 directory the first time.   If I quit Eclipse, however, the error dialog returns.  

This sounds the resource manager configuration is not being  saved correctly. Please open a bug against the RM.MPICH2 component.

OK, I will submit a bug within the next few days.  In the meantime I will try a temporary workaround, where I explicitly spell out the path to all MPI scripts for the Resource Manager,.

Thanks for your help,

--Brian

Regards,
Greg