Huh. We hadn't had any reports of DDT issues. Is it failing because MPIR_Breakpoint is physically not present in the library?
On Mar 21, 2011, at 2:50 PM, Dominik Goeddeke wrote: > Hi, > > for what it's worth: Same thing happens with DDT. OpenMPI 1.2.x runs fine, > later versions (at least 1.4.x and newer) let DDT bail out with "Could not > break at function MPIR_Breakpoint". > > DDT has something like "OpenMPI (compatibility mode)" in its session launch > dialog, with this setting (instead of the default "OpenMPI") it works > flawlessly. > > Dominik > > > > On 03/21/2011 06:22 PM, Ralph Castain wrote: >> Ick - appears that got dropped a long time ago. I'll add it back in and post >> a CMR for 1.4 and 1.5 series. >> >> Thanks! >> Ralph >> >> >> On Mar 21, 2011, at 11:08 AM, David Turner wrote: >> >>> Hi, >>> >>> About a month ago, this topic was discussed with no real resolution: >>> >>> http://www.open-mpi.org/community/lists/users/2011/02/15538.php >>> >>> We noticed the same problem (TV does not display the user's MAIN >>> routine upon initial startup), and contacted the TV developers. >>> They suggested a simple OMPI code modification, which we implemented >>> and tested; it seems to work fine. Hopefully, this capability >>> can be restored in future releases. >>> >>> Here is the body of our communication with the TV developers: >>> >>> ---------------------------------------------------------------------- >>> >>> Interestingly enough, someone else asked this very same question recently >>> and I finally dug into it last week and figured out what was going on. >>> TotalView publishes a public interface which allows any MPI implementor to >>> set things up so that it should work fairly seamless with TotalView. I >>> found that one of the defines in the interface is >>> >>> MPIR_force_to_main >>> >>> and when we find this symbol defined in mpirun (or orterun in Open MPI's >>> case) then we spend a bit more effort to focus the source pane on the main >>> routine. As you may guess, this is NOT being defined in OpenMPI 1.4.2. It >>> was being defined in the 1.2.x builds though, in a routine called >>> totalview.c. OpenMPI has been re-worked significantly since then, and >>> totalview.c has been replaced by debuggers.c in orte/tools/orterun. About >>> line 130 to 140 (depending on any changes since my look at the 1.4.1 >>> sources) you should find a number of MPIR_ symbols being defined. >>> >>> struct MPIR_PROCDESC *MPIR_proctable = NULL; >>> int MPIR_proctable_size = 0; >>> int MPIR_being_debugged = 0; >>> volatile int MPIR_debug_state = 0; >>> volatile int MPIR_i_am_starter = 0; >>> volatile int MPIR_partial_attach_ok = 1; >>> >>> >>> I believe you should be able to insert the line: >>> >>> int MPIR_force_to_main = 0; >>> >>> into this section, and then the behavior you are looking for should work >>> after you rebuild OpenMPI. I haven't yet had the time to do that myself, >>> but that was all that existed in the 1.2.x sources, and I know those >>> achieved the desired effect. It's quite possible that someone realized the >>> symbol was initialized, but wasn't be used anyplace, so they just removed >>> it. Without realizing we were looking for it in the debugger. When I >>> pointed this out to the other user, he said he would try it out and pass it >>> on to the Open MPI group. I just checked on that thread, and didn't see any >>> update, so I passed on the info myself. >>> >>> ---------------------------------------------------------------------- >>> >>> -- >>> Best regards, >>> >>> David Turner >>> User Services Group email: dptur...@lbl.gov >>> NERSC Division phone: (510) 486-4027 >>> Lawrence Berkeley Lab fax: (510) 486-4316 >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > -- > Dr. Dominik Göddeke > Institut für Angewandte Mathematik > Technische Universität Dortmund > http://www.mathematik.tu-dortmund.de/~goeddeke > Tel. +49-(0)231-755-7218 Fax +49-(0)231-755-5933 > > > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
