Hi Sherman, >> This is sort of off-topic but I'm sure interesting to the community none the >> less. I was on the phone with a fellow OSG developer earlier today >> complaining how slow the builds are on Windows and how I have this quad core >> sitting here not being fully utilized by my compiler.
strangely enough I also discovered this blog post for 2005 two weeks ago after poking around the 2008 documentation and changes. Like Gordon we also get some manifest "mt.exe" odd problems, but in general I can live with them given the 8x speed-up in compilation ;) I don't generally see too many of these problems to make it painful. I guess it depends how often it happens and for how many libraries and I personally never see it unless doing a Solution build from the top where there are loads of project interdependencies happening. From my perspective the problems do not produce a bad or incorrect build, just the odd library now and then failing to link which you can manually re-link. Obviously if you miss the error then you'll get a bad build or old library lying around although adding a pre build event to remove the old version before the build can negate this. We have one particular "legacy" library that contains 150 source files and this /MT cuts full rebuild time from 80 to 11 minutes on my dual quad-core. Perhaps adding it to the cmake as an optional flag would let people try it for themselves and decide on whether it works for them. Gordon: > Now back in the good old days on good SGI 32 processor monster > parallel build work like a charm and screamed along ...... Yup it's only taken 10 years for me to have 1/4 of the build power on Windows of that humming beast of an SGI towel dryer in the basement ;) Colin. sherman wilcox wrote: > Gordon, the issues you encountered - were they obvious issues as in > linker errors or were they more subtle like random crashes and the > like? > > On Wed, Apr 9, 2008 at 4:04 PM, Gordon Tomlinson > <[EMAIL PROTECTED]> wrote: >> Hi >> >> We avoid using this feature at work on our projects as we have found the VS >> linker and compiler do not always see eye to eye when using parallel builds >> and also find a lot of manifest issue, but that's our experience >> >> Now back in the good old days on good SGI 32 processor monster parallel >> build work like a charm and screamed along ...... >> >> Regards >> Gordon >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of sherman >> wilcox >> Sent: Wednesday, April 09, 2008 4:34 PM >> To: OpenSceneGraph Users >> Subject: [osg-users] faster builds on multiproc systems - Visual Studio >> 2005& 2008 >> >> This is sort of off-topic but I'm sure interesting to the community none the >> less. I was on the phone with a fellow OSG developer earlier today >> complaining how slow the builds are on Windows and how I have this quad core >> sitting here not being fully utilized by my compiler. >> He touted how his Mac could perform parallel builds and how much faster it >> was. So off I went to see if there's a way to do this with my compiler, >> Visual Studio 2005. Lo and behold I found an undocumented way to enable >> multi-processor builds using VS 2005. I couldn't believe it. It was like >> someone gave me a gift. >> >> >> http://blog.280z28.org/archives/2007/10/17/ >> >> http://lahsiv.net/blog/?p=40 >> >> So, could some of you guys try this as well and let me know how you get on? >> _______________________________________________ >> 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 >> > _______________________________________________ > 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
