Hi Massimo, Are you saying you have 73 separate databases? Or 73 files within the same database?
If you have 73 separate databases then it's time to rebuild them into a single databases, as your are destroying the ability of LOD's to properly manage complexity with so many separate subgraphs. As for the sizes involved 400G is large, but not enormous. VPB has generated databases 20 times that size, and runtime performance hits 60Hz just fine on these databases. So if you use the tools as intended then things will scale just fine. As for using Windows to do visualization then it's possible, but it's memory management, file system and threading capability all hamper best performance. Linux should give you much better runtime stability and performance stability. This doesn't change the fact that you probably need to improve the way you manage your database. Robert. On Sun, Sep 20, 2009 at 10:32 AM, Massimo Tarantini <[email protected]>wrote: > Hi, > i have just completed to make 3D Terrains for the whole Italy > in ive format with osgdem. The data base includes 73 ive files > 100km x 100km each (and each one is the merge (using osgconv) > of 400 ive files 5km x 5km each), and the total size is about 400G > > I have no problem to view a single ive file under Windows XP, > with good fps (when zooming... it's slow when zoomout), but of course > osgviewer fails to load ALL the 73 ive files (osgconv fails too, when > trying to create a single big file) > > osgviewer crash where allocated phisical ram raise about 2.5G: i reckon > it is not a virtual memory problem, but an addressable RAM question > under Windows. > > My questions are: > . can i expect to be succesfull to load ALL the 73 files under Linux? > . osg/vpb can effectively manage such big databases with a Desktop PC? > . could i estimate the HW resources (RAM, CPU, Video...) to manage > decently such terrain? > > Thank you! > > Cheers, > Massimo > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=17509#17509 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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