Hi Bruce, We've tested the same code I posted (the Main.cpp) without modifications. About the cards, we're using 2 NVidia GTX 285, with the latest drivers from the NVidia website.
Cheers, On Sat, Apr 10, 2010 at 10:34 PM, Bruce Wheaton <br...@spearmorgan.com>wrote: > Thanks for reporting back Serge - glad that's working for you. Sorry I > didn't have time to test on my Linux rig. > > Was the technique the same as your Main.cpp example, as posted, or did you > have to do any extra tricks? > > Also, what graphics cards and drivers are you using? That makes a big > difference in Linux. > > Regards, > > Bruce Wheaton > > > On Mar 29, 2010, at 5:17 AM, Serge Lages wrote: > > Hi all, > > Some news on this topic, we've tested on Linux : same hardware (2 GTX285 > and 4 screens), same video, same code, an ubuntu 9.04 configured with 4 > screens, with VSync enabled we've got a solid 60fps... Without VSync it goes > between 150 and 300fps. > > So we've got our solution, we'll make our setup on Linux. Multi-screen > support in OpenGL is really crappy on Windows... :/ > > Cheers, > > On Thu, Mar 25, 2010 at 2:44 PM, Serge Lages <serge.la...@gmail.com>wrote: > >> Hi JP, >> >> Thanks for your reply, we've tested to share the contexts but it wasn't >> much better. >> >> Cheers, >> >> >> On Thu, Mar 25, 2010 at 9:24 AM, J.P. Delport <jpdelp...@csir.co.za>wrote: >> >>> Hi Serge, >>> >>> Serge Lages wrote: >>> >>>> Hi all, >>>> >>>> Still having problems playing my big video. Here is our current state : >>>> >>>> - On a single screen setup (with only one GT 220 GeForce), with a >>>> composite viewer and 4 windows (450x800 each window), it plays smoothly at >>>> 60 fps with a fluid video, no problem here. >>>> - On the destination setup : Intel QuadCore + 2 GeForce GTX 285 + 4 >>>> screens in 1360x768 (2 screens per cards), a composite viewer with one view >>>> per screen, it plays between 10 and 20 fps... We've made our tests on WinXP >>>> and Win7 with the same result. >>>> >>>> The technique we're currently using is the one from Robert, having a big >>>> osg::Image updated by ffmpeg, and having 4 images for the textures pointing >>>> at the correct location on the large one. The video's size is 768x6532. >>>> >>> >>> Have you tried sharing the context for the two views per card? Also, you >>> are now uploading twice the data needed to each GPU, because each one is >>> only viewing half the data. I'm sorry I can't help further currently, I >>> would love to test on Linux, but don't have time... >>> >>> jp >>> >>> >>>> You can find attached the current code, any idea on what can be better ? >>>> Or any other idea on how to handle this problem ? And any chance for >>>> someone >>>> to test on Linux ? >>>> You can also find the test video here : >>>> http://labs.tharsis-software.com/outv.mp4 >>>> >>>> Thanks ! >>>> >>>> On Thu, Mar 11, 2010 at 9:53 AM, Serge Lages <serge.la...@gmail.com<mailto: >>>> serge.la...@gmail.com>> wrote: >>>> >>>> Hi all, >>>> >>>> Thanks for your advices. About the current setup, we're using only >>>> one screen with a 9800GT card (and 4 windows) for our tests, but the >>>> final setup will be composed of 2 9800GT cards and 4 screens. >>>> >>>> I'll let you know how our tests goes. >>>> Cheers, >>>> >>>> >>>> On Thu, Mar 11, 2010 at 8:28 AM, J.P. Delport <jpdelp...@csir.co.za >>>> <mailto:jpdelp...@csir.co.za>> wrote: >>>> >>>> Hi, >>>> >>>> >>>> Serge Lages wrote: >>>> >>>> Hi JP, >>>> >>>> Thanks for your answer, and we don't need sound. By a "fast >>>> disk", what do you recommend ? >>>> >>>> >>>> We have a raid0 setup that can sustain 150MB/s. >>>> >>>> >>>> Your ffmpeg reader is based on the current OSG plugin or is >>>> it a custom one ? >>>> >>>> >>>> It's a custom one, but not complicated. It basically pops the >>>> output of ffmpeg decompress into an osg::Image, set's PBO on >>>> that and lets OSG upload it. We are using only monochrome images >>>> though (GL_LUMINANCE). >>>> >>>> >>>> >>>> About our file, with some codecs and adjustments on the >>>> bitrate, we're able to play it with VLC without problems, so >>>> I think the reading part can be handled by the ffmpeg plugin >>>> with only one file, but then we need to dispatch this image >>>> on 4 textures. We're currently trying to do some tests. >>>> >>>> >>>> I'm still not sure where your problem area is. If it's not >>>> decoding it can only be upload to GPU or final rendering. You >>>> should be able to check this by varying the complexity of the >>>> rendering. >>>> >>>> jp >>>> >>>> >>>> Cheers, >>>> >>>> >>>> On Wed, Mar 10, 2010 at 4:53 PM, J.P. Delport >>>> <jpdelp...@csir.co.za <mailto:jpdelp...@csir.co.za> >>>> <mailto:jpdelp...@csir.co.za <mailto:jpdelp...@csir.co.za >>>> >>> >>>> >>>> wrote: >>>> >>>> Hi Serge, >>>> >>>> >>>> >>>> >>>> Serge Lages wrote: >>>> >>>> Hi all, >>>> >>>> We currently need to play a big video (approximately >>>> 5500*800) >>>> on 4 screens within an OSG application (we use a >>>> composite >>>> viewer), so we've tried : >>>> >>>> - Cut the video in 4 parts, but it seems really hard >>>> to >>>> synchronize the 4 streams. >>>> - Decode directly the big file, resulting with a very >>>> big >>>> texture split on 4 quads (with appropriate texture >>>> coords), but >>>> even with a powerful computer, it's very slow. >>>> >>>> Any idea on what's the best approach for this problem >>>> ? We're >>>> currently making our tests using the ffmpeg plugin, >>>> but maybe >>>> another plugin would be more appropriate ? >>>> Thanks in advance for your help. >>>> >>>> >>>> some ideas/questions. We do something similar - stitch >>>> four high-res >>>> camera videos into large texture. We have custom ffmpeg >>>> reader that >>>> just reads from 4 video files and we step them manually >>>> (and in >>>> sync) one frame at a time. We use raw video (no >>>> compression) to >>>> avoid cpu decompress, but now one needs fast disks. We >>>> don't have >>>> sound, do you need sound? For large sizes one needs to >>>> avoid copying >>>> around data in cpu mem as much as possible. There is >>>> still one copy >>>> in ffmpeg raw read that I need to get rid of. >>>> >>>> rgds >>>> jp >>>> >>>> >>>> Cheers, >>>> >>>> -- Serge Lages >>>> http://www.tharsis-software.com >>>> >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org> >>>> <mailto:osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org>> >>>> >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>>> >>>> -- This message is subject to the CSIR's copyright >>>> terms and >>>> conditions, e-mail legal notice, and implemented Open >>>> Document >>>> Format (ODF) standard. The full disclaimer details can be >>>> found at >>>> http://www.csir.co.za/disclaimer.html. >>>> >>>> This message has been scanned for viruses and dangerous >>>> content by >>>> MailScanner, and is believed to be clean. MailScanner >>>> thanks >>>> Transtec Computers for their support. >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org> >>>> <mailto:osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org>> >>>> >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>>> >>>> >>>> >>>> -- Serge Lages >>>> http://www.tharsis-software.com >>>> >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org> >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>>> >>>> -- This message is subject to the CSIR's copyright terms >>>> and >>>> conditions, e-mail legal notice, and implemented Open Document >>>> Format (ODF) standard. The full disclaimer details can be found >>>> at http://www.csir.co.za/disclaimer.html. >>>> >>>> This message has been scanned for viruses and dangerous content >>>> by MailScanner, and is believed to be clean. MailScanner thanks >>>> Transtec Computers for their support. >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> <mailto:osg-users@lists.openscenegraph.org> >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>>> >>>> >>>> >>>> -- Serge Lages >>>> http://www.tharsis-software.com >>>> >>>> >>>> >>>> >>>> -- >>>> Serge Lages >>>> http://www.tharsis-software.com >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>> >>> -- >>> This message is subject to the CSIR's copyright terms and conditions, >>> e-mail legal notice, and implemented Open Document Format (ODF) standard. >>> The full disclaimer details can be found at >>> http://www.csir.co.za/disclaimer.html. >>> >>> This message has been scanned for viruses and dangerous content by >>> MailScanner, and is believed to be clean. MailScanner thanks Transtec >>> Computers for their support. >>> >>> _______________________________________________ >>> osg-users mailing list >>> osg-users@lists.openscenegraph.org >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> >> >> >> >> -- >> Serge Lages >> http://www.tharsis-software.com >> > > > > -- > Serge Lages > http://www.tharsis-software.com > _______________________________________________ > 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 > > -- Serge Lages http://www.tharsis-software.com
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