Hello Carsten and Victor, Thank you for your quick answers.
My performance problems happen all the time and not only the first few frames (which would be disturbing but not currently blocking). I can't solve it by reducing the size of textures. I don't modify the textures. For now, I don't even change the scene! I just change the position of the "user" node of my decorators (ProjectionCameraDecorator) for the head tracking. I really don't understand why it lag ! My textured object is a geometry with 3730 points and the texture is 6.3 MB. Is my geometry too big? Could my texture get more than a few minutes to load? (Because I've never waited so long) Best regards, Hannah ----- Mail original ----- > De: "Carsten Neumann" <carsten_neum...@gmx.net> > À: opensg-users@lists.sourceforge.net > Envoyé: Lundi 23 Juillet 2012 23:50:09 > Objet: Re: [Opensg-users] Bad performance in cluster with textures > > Hello Hannah, > > On 07/23/2012 12:27 PM, Hannah Carbonnier wrote: > > I wrote an application running in a CAVE cluster with head > > tracking. As > > my objects are not textured, everything works perfectly. But, once > > I > > added a texture, performance decreases dramatically and image > > judder. > > This problem does not appear when I launch my application with > > clusterserverx (found in tutorials) launched locally. > > > > Is it only because the textures are heavy to send by the network? > > Can I > > find a way to keep good performance while displaying my textures? > > textures can be slow to send across a network, but that should only > happen once during startup. Are you modifying the textures/images > each > frame? One thing to be careful about when targeting a cluster is > using > the correct access functions edit*() vs. get*(). The edit*() versions > mark the underlying data as modified, which in a cluster means it > needs > to be transmitted again. If that happens on the pixels of an Image > (which is used to back a texture) this can quickly become a large > amount > of data that needs to be sent each frame. > In general textured models should not run slower in a cluster (after > the > initial distribution) than those without textures [1]. > > Cheers, > Carsten > > [1] well, that assumes the graphics card can cope ;) > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. > Discussions > will include endpoint security, mobile security and the latest in > malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Opensg-users mailing list > Opensg-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/opensg-users > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
