If it is such a general bug in the PGI compiler it might be worthwhile to get it PGI fixed fast and distribute that to the users affected. Usually they are pretty responsive.
> On Jun 13, 2007, at 8:47 PM, Julian Cummings wrote: > > > I did some quick tests with my little hello example that indicate that > > the application code only needs to be *linked* with -fpic, not > > compiled > > with it. The -fpic flag on the mpicxx link line points the linker > > to a > > PGI "libso" subdirectory that contains dynamic versions of the > > compiler > > libraries. In this case, probably libC.so is most important. Anyway, > > at least you do not have to potentially degrade the performance of the > > application code by compiling all of it with -fpic. I would recommend > > that the OpenMPI configuration be modified to insert this flag (or > > some > > equivalent) as an LCXXFLAGS or even an LDFLAGS component in the > > compiler > > driver scripts whenever PGI is used. > > We've had debates about this internally. There was pushabck from > some of the developers that we don't want to handle every single > compiler bug that's out there (there are many). It can be a never- > ending battle. This is a big enough compiler bug, however (it spans > the 6.2 and 7.0 PGI series) that if someone contributes a patch, we > might be able to make a big enough case to fix it. The functionality > I'd like to see in such a patch is: > > - in the C++ section of configure, try to compile and run a simple C+ > + (non-MPI) program > - if it works, fine > - if it doesn't work, try again but link it with -fpic > - if that works, then add -fpic to the C++ compiler wrapper flags > > All with appropriate comments describing why this check is there (so > that someone doesn't look at it in 6 months and wonder why the heck > we're checking for that). > > FWIW, you can easily modify the wrapper scripts to automatically put > this flag in after Open MPI is installed (see http://www.open-mpi.org/ > faq/?category=mpi-apps#override-wrappers-after-v1.0). > > -- > Jeff Squyres > Cisco Systems > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- \\\\\\ (-0^0-) --------------------------oOO--(_)--OOo----------------------------- Luis Kornblueh Tel. : +49-40-41173289 Max-Planck-Institute for Meteorology Fax. : +49-40-41173298 Bundesstr. 53 D-20146 Hamburg Email: luis.kornbl...@zmaw.de Federal Republic of Germany
