[osg-users] Performance Windows (Visual Studio) compared to MAC OS/X
Hi all, same code, allways default project settings, release, same CPU/RAM/... windows native and os/x native dual boot what you think about this results are equal, but computing time MAC OS/X XCode Ray Trace Time = 2.97638s Rays = 787307 (264K Rays/s) Nodes Checks= 24939199 Bounding Checks= 49512447 Triangles Checks= 16703960 Visual Studio 2003 Ray Trace Time = 3.77131s Rays= 786152 (208K/s) Nodes Checks= 24806690 Bounding Checks = 49252143 Triangles Checks= 16609007 Visual Studio 2005 Ray Trace Time = 4.62109s Rays= 786152 (170K/s) Nodes Checks= 24806705 Bounding Checks = 49252212 Triangles Checks= 16608961 -- Adrian Egli ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Performance Windows (Visual Studio) compared to MAC OS/X
Adrian Egli wrote: Hi all, same code, allways default project settings, release, same CPU/RAM/... windows native and os/x native dual boot what you think about this results are equal, but computing time With results I assume you mean the image output? As the number of tree nodes checked and triangles intersected is obviously not equal. Which should explain at least some of the differences. Are the Kd-trees equal among the different platforms? Paul MAC OS/X XCode Ray Trace Time = 2.97638s Rays = 787307 (264K Rays/s) Nodes Checks= 24939199 Bounding Checks= 49512447 Triangles Checks= 16703960 Visual Studio 2003 Ray Trace Time = 3.77131s Rays= 786152 (208K/s) Nodes Checks= 24806690 Bounding Checks = 49252143 Triangles Checks= 16609007 Visual Studio 2005 Ray Trace Time = 4.62109s Rays= 786152 (170K/s) Nodes Checks= 24806705 Bounding Checks = 49252212 Triangles Checks= 16608961 -- Adrian Egli ___ 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
Re: [osg-users] Performance Windows (Visual Studio) compared to MAC OS/X
Yes, Paul: equals is the image output. ... and the kd-tree should be equal, i summed up for each node the depth and also for the leaves. everything is equal. /but the perf not ... i working with float for all values. i don't understand why it's not at all equal the nbr of tests. but the performance difference isn't not only that, because the difference of the nbr of test done and the performance difference are not similar. * Visual Studio 2003 * KD-Tree...[23348:20] KD-Tree Build Time = 0.248399s + ObjList= 23348 + Nodes = 14139 + depth sum = 13724 + Leaves = 8049 + depth sum = 7657 Intersection Time = 0.000254502s Rays= 1 Nodes Checks= 79 Bounding Checks = 122 Triangles Checks= 49 Linehits= 6 Intersection Time osg = 0.0215715s Linehits= 6 SpeedUp = 84.7596 Ray Trace Time = 3.94728s Rays= 786152 (199K/s) Nodes Checks= 24806690 Bounding Checks = 49252143 Triangles Checks= 16609007 Viewer... Scaling image from (600,800) to (512,1024) * Visual Studio 2005 * KD-Tree...[23348:20] KD-Tree Build Time = 0.256906s + ObjList= 23348 + Nodes = 14139 + depth sum = 13724 + Leaves = 8049 + depth sum = 7657 Intersection Time = 0.000297803s Rays= 1 Nodes Checks= 79 Bounding Checks = 122 Triangles Checks= 49 Linehits= 6 Intersection Time osg = 0.0203945s Linehits= 6 SpeedUp = 68.4831 Ray Trace Time = 4.59982s Rays= 786152 (170K/s) Nodes Checks= 24806705 Bounding Checks = 49252212 Triangles Checks= 16608961 Viewer... Scaling image from (600,800) to (512,1024) 2007/10/15, Paul Melis [EMAIL PROTECTED]: Adrian Egli wrote: Hi all, same code, allways default project settings, release, same CPU/RAM/... windows native and os/x native dual boot what you think about this results are equal, but computing time With results I assume you mean the image output? As the number of tree nodes checked and triangles intersected is obviously not equal. Which should explain at least some of the differences. Are the Kd-trees equal among the different platforms? yes i still check out the issue, and i don't understand why the kd-trees may is Paul MAC OS/X XCode Ray Trace Time = 2.97638s Rays = 787307 (264K Rays/s) Nodes Checks= 24939199 Bounding Checks= 49512447 Triangles Checks= 16703960 Visual Studio 2003 Ray Trace Time = 3.77131s Rays= 786152 (208K/s) Nodes Checks= 24806690 Bounding Checks = 49252143 Triangles Checks= 16609007 Visual Studio 2005 Ray Trace Time = 4.62109s Rays= 786152 (170K/s) Nodes Checks= 24806705 Bounding Checks = 49252212 Triangles Checks= 16608961 -- Adrian Egli ___ 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 -- Adrian Egli ___ osg-users mailing list osg-users@lists.openscenegraph.org
Re: [osg-users] Performance Windows (Visual Studio) compared to MAC OS/X
Ummmthis looks suspicious. Same hardware yet different times on the Windows platform? What about checked iterators under 2005? Are you disabling those? Checked iterators: http://msdn2.microsoft.com/en-us/library/aa985965(VS.80).aspx With checked iterators, you'd need to disable them for the OSG libs as well. Do you have access to a Intel compiler for Windows? I'd encourage you to try that as well. On 10/15/07, Adrian Egli [EMAIL PROTECTED] wrote: Hi all, same code, allways default project settings, release, same CPU/RAM/... windows native and os/x native dual boot what you think about this results are equal, but computing time MAC OS/X XCode Ray Trace Time = 2.97638s Rays = 787307 (264K Rays/s) Nodes Checks= 24939199 Bounding Checks= 49512447 Triangles Checks= 16703960 Visual Studio 2003 Ray Trace Time = 3.77131s Rays= 786152 (208K/s) Nodes Checks= 24806690 Bounding Checks = 49252143 Triangles Checks= 16609007 Visual Studio 2005 Ray Trace Time = 4.62109s Rays= 786152 (170K/s) Nodes Checks= 24806705 Bounding Checks = 49252212 Triangles Checks= 16608961 -- Adrian Egli ___ 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
