Hi Robert, I have cmake-2.6.0. I had it before Intrepid; downloaded from cmake.org and it has the proper CMAKE_CXX_FLAGS_RELEASE (-O3 -NDEBUG). This suggests that the ubuntu archives might be the source of your problem. I - like you - also have cmake-2.6.2 installed with proper CMAKE_CXX_FLAGS_RELEASE. This too downloaded manually from cmake.org
cheers Mattias On Wed, Dec 3, 2008 at 5:09 PM, Robert Osfield <[EMAIL PROTECTED]> wrote: > HI All, > > I've been testing my newly built Intel Core i7/X58/Kubuntu 8.10 system > and found that OSG performance was around 1/3rd of what I expected, > and have traced the cause of this down to the cmake-2.6.0 (2.6 patch > 0) that I installed from the Ubuntu repositories. The specific > problem is that Cmake is defaulting to a blank entry for > CMAKE_CXX_FLAGS_RELEASE, something that normally reads "-O3 -DNDEBUG", > to see the value run ccmake . and then press 't' to get the advanced > options. > > Manually setting CMAKE_CXX_FLAGS_RELEASE to -O3 -DNDEBUG fixed the > performance problem with the Release build. I have also pulled down > cmake 2.6.2 from the cmake website, built and installed it and this > version of Cmake sets up the expect value for CMAKE_CXX_FLAGS_RELEASE > so they have fixed this bug. > > I don't know whether this bug is just specific to my process > architecture, or whether its just an issue with the Ubuntu > repositories version of CMake 2.6.0, but there is a good chance that > the problem affects more platforms and Cmake versions. Could users > check their CMAKE_CXX_FLAGS_RELEASE value and report this value along > with cmake version, source of your cmake version and platform details. > > Once we have a pattern of what is cmake versions/platforms this > problem we can post an advisory on the wiki, and perhaps see if we can > get the repositories updated. > > Thanks, > Robert. > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
