Dear Roy, On Thu, 26 Mar 2009, Roy Stogner wrote:
> I needed "#include <stdlib.h>" to get test2 to work; g++ is getting > more and more nitpicky about standards compliance. Oops... at which line does your g++ complain if you don't include stdlib.h? > I can reproduce the non-reproducibility... but not to any level that > I'd worry about. > Alternatively, maybe I *haven't* reproduced what you're seeing. IIRC > you were talking about residual differences in the 6th place, not the > 16th, so maybe there's something more at work there. Well, as far as I understood this right now, the observed residual differences originate from these small matrix differences. (Of course, my matrix is much larger, and a larger number of coefficients differ between different runs.) This non-reproducibility complicates the check whether the ghosted vectors change the code behaviour a lot, because it is no longer clear what "change the behaviour" means. Perhaps I should just run both the ghosted and the non-ghosted version of my application two times each and look whether the final results between ghosted/non-ghosted differ consderably more than within these groups. Not really convincing, but the best thing I can think of. (Unfortunately, I deleted the results that I had from the runs some days ago since I thought of a bug...) Best Regards, Tim -- Dr. Tim Kroeger tim.kroe...@mevis.fraunhofer.de Phone +49-421-218-7710 tim.kroe...@cevis.uni-bremen.de Fax +49-421-218-4236 Fraunhofer MEVIS, Institute for Medical Image Computing Universitaetsallee 29, 28359 Bremen, Germany ------------------------------------------------------------------------------ _______________________________________________ Libmesh-devel mailing list Libmesh-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-devel
