Hi Raymond, Unfortunately I have very little experience with Windows in general, and no experience at all with Win 7. Can't give you any advice on disconnected displays.
Stefan has experience with Windows, maybe he can say something. I only know that on the XP WGL_NV_gpu_affinity extension should be supported in order to use multiple GPUs (only Quadro FX cards support this, also some soft-modded GT 8800 might), here is a tool to check the extension: http://www.equalizergraphics.com/downloads/tools.html Best regards, Maxim Makhinya On Apr 14, 2010, at 10:59 , Raymond de Vries wrote: > Hi Maxim, > > Thanks again! I was just going to write a message saying that pbuffer > does not work either... I am using the svn HEAD so I probably hit the > pbuffer bug. Using fbo works indeed. > > Sounds like a reasonable thing to automatically create a config and > use > it on other machines. And also, I needed to specify the actual > viewport > sizes. > > What do you think about using the same strategy on Windows (7)? I > wonder > if I can configure windows so that the 2nd GPU can be addressed > while no > monitor is attached... > > Thanks, > Raymond > > > Maxim Makhinya wrote: >> Hi Raymond, >> >> I have Ubuntu 9.04. >> >> You should configure your X server. Here is what glxinfo shows on our >> machines: >> >> $ glxinfo | grep display >> name of display: 0:0.0 >> display: 0:0 screen: 0 >> display: 0:0 screen: 1 >> display: 0:0 screen: 2 >> display: 0:0 screen: 3 >> >> We have 2 GeForce 9800 GX2 here, they are shown as 4 devices. >> (I just connected all 4 displays once to get proper xorg.conf :) >> and then saved it to other machines). >> >> When actual displays are not connected driver thinks that some >> analog display with low resolution is connected (that's why you >> need to specify viewports' sizes if you are using full screen mode). >> >> Also, recently a bug with p-buffers on linux was discovered: >> >> https://sourceforge.net/tracker/?func=detail&aid=2934387&group_id=170962&atid=856209 >> >> I'm not sure if you will have it as well, try FBOs otherwise. >> >> Older versions don't have this problem (I'm using quite old rev. 3335 >> in my tests). >> >> Best regards, >> >> Maxim Makhinya >> >> >> >> On Apr 14, 2010, at 10:22 , Raymond de Vries wrote: >> >> >>> Hi Maxim, >>> >>> Thnx, using the pbuffer config makes sense. Do I still need to >>> configure >>> the X server to use the second GPU? When running eqServer with >>> 2-pipe.2D.PBuffer.eqc eqPly still exits with this error (and hence >>> eqServer is quit): >>> "OS Pipe initialization failed: Can't open display: :0.1" >>> >>> On what platform are you btw? Eventually I want to use Windows (now >>> using Kubuntu for testing). >>> >>> thanks >>> Raymond >>> >>> >>> Maxim Makhinya wrote: >>> >>>> Hi Raymond, >>>> >>>> You need to use P-Buffer or FBO as a rendering target on your >>>> second >>>> GPU. >>>> >>>> Check 2-pipe.2D.PBuffer.eqc in examples/configs. >>>> >>>> Also you might need to set also a viewport for your second GPU to >>>> cover >>>> your area. Here is an example from one of my configs: >>>> >>>> global >>>> { >>>> EQ_WINDOW_IATTR_HINT_FULLSCREEN ON >>>> EQ_WINDOW_IATTR_HINT_DOUBLEBUFFER OFF >>>> EQ_WINDOW_IATTR_HINT_DRAWABLE pbuffer >>>> EQ_WINDOW_IATTR_PLANES_STENCIL ON >>>> EQ_CHANNEL_IATTR_HINT_SENDTOKEN ON >>>> } >>>> server >>>> { >>>> config >>>> { >>>> appNode >>>> { >>>> pipe >>>> { >>>> name "pipe0n0" >>>> device 0 >>>> window >>>> { >>>> name "window0" >>>> attributes >>>> { >>>> hint_drawable window >>>> hint_doublebuffer ON >>>> } >>>> viewport [ 0 0 2560 1600 ] >>>> channel { name "channel0" } >>>> } >>>> } >>>> pipe >>>> { >>>> name "pipe0n1" >>>> device 1 >>>> window >>>> { >>>> name "window1" >>>> viewport [ 0 0 2560 1600 ] >>>> channel { name "channel1" } >>>> } >>>> } >>>> } >>>> compound >>>> { >>>> ... >>>> } >>>> } >>>> } >>>> >>>> >>>> Best regards, >>>> >>>> Maxim Makhinya >>>> >>>> >>>> >>>> On Apr 14, 2010, at 09:50 , Raymond de Vries wrote: >>>> >>>> >>>> >>>>> Hi, >>>>> >>>>> I'm sorry to ask but it is still unclear how I can use multiple >>>>> GPUs >>>>> while still using 1 monitor. I can succesfully use 2-pipe.2D.eqc >>>>> to >>>>> use >>>>> my 2 GPUs for 1 window (on Kubuntu, crashes on Windows 7) when I >>>>> use 2 >>>>> monitors. But when I use only 1 screen, I cannot use 2-pipe. >>>>> 2D.eqc, >>>>> the >>>>> server aborts ('unreachable code...'). >>>>> >>>>> Thanks a lot for your tips & hints. >>>>> >>>>> Regards >>>>> Raymond >>>>> >>>>> >>>>> _______________________________________________ >>>>> eq-dev mailing list >>>>> [email protected] >>>>> http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev >>>>> http://www.equalizergraphics.com >>>>> >>>>> >>>>> >>>> _______________________________________________ >>>> eq-dev mailing list >>>> [email protected] >>>> http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev >>>> http://www.equalizergraphics.com >>>> >>>> >>> _______________________________________________ >>> eq-dev mailing list >>> [email protected] >>> http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev >>> http://www.equalizergraphics.com >>> >>> >> >> >> _______________________________________________ >> eq-dev mailing list >> [email protected] >> http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev >> http://www.equalizergraphics.com >> > > > _______________________________________________ > eq-dev mailing list > [email protected] > http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev > http://www.equalizergraphics.com > _______________________________________________ eq-dev mailing list [email protected] http://www.equalizergraphics.com/cgi-bin/mailman/listinfo/eq-dev http://www.equalizergraphics.com
