dglenn wrote: > > Jason Daly wrote: > > On 05/18/2011 05:14 AM, Fred Smith wrote: > > > > > Hi, > > > > > > The only problem that I personally heard about is about the slow transfer > > > speed to/from GPU memory on Fermi cards. DMA transfers are said to be > > > slower than on GTX 2xx hardware. I haven't seen anything related to > > > computing. > > > > > > > I think it's specifically GPU->host memory transfers that are slow. The > > other direction is OK, as is the computation speed. The thread on the > > OpenGL forums has the details, and someone posted a small program that > > does timing tests and illustrates the issue pretty well. > > > > http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=284065&page=1 > > > > --"J" > > > > > I looked at the link you gave and downloaded the program that was the (the > 4th revision of it) and tried on my GTX 460 and an old 8800 GT and compared > it to the results that was posted and something does not add up with the test > program!
Most people there compare GTX2xx hardware and Fermi hardware. You are comparing G80 and Fermi hardware. ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=39527#39527 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
