Hi,Disabling optimization parameters (i.e. setting graphOpSeq to NULL in the SceneFileHandler::read() function) makes loading of OSB data faster in OpenSG.However I made some observations regarding data loading in Optimizer ( with opviewer) and OpenSG : o If loading some dataset (in CSB format) in opviewer for the first time takes X secs then subsequent loading of the same data takes about X/10 seconds i.e. loading the same data second time onwards is considerably faster. o Loading same dataset (converted to OSB) in osg application takes around same time always i.e. first and second time loading times don't differ.[ The datasets I tried were "Dragon" and "Happy Buddha" from http://www-static.cc.gatech.edu/projects/large_models/converted to CSB and OSB for loading into opviewer and OpenSG application respectively. ]Does anybody has any clue about this behaviour with opviewer ? Thanks,- Vaibhav>That said, OSB in general loads very fast. The only thing I can think of>that might slow things down is that by default some basic optimizations>(striping etc.) are run on every loaded model. You can deactivate (or>change) that by giving an optional parameter to>SceneFileHandler::read(). That parameter is the GraphOpSequence to be>run after loaded, or NULL.>How much of a difference are we talking here anyway? 10% or a factor of>10?>Hope it helps>Dirk
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