Colli

On 32 bit windows your limited to around 1.83gb of addressable memory space 
with tricks and version you can get this up to around 2.2-3gb of addressable 
space
(On linux you can get a wee bit more around 3gb)

If the files you have are many then you can use a paging system to load them in 
and out like osgVPB/osgDEM uses,  ( Similar to the old Vega LADBM systems )

also you could look at doing your own paging system using  osg::PagedLOD

Even using a paging system your not going to get all that data in memory at once


Gordon
Product Manager 3d
__________________________________________________________
Gordon Tomlinson
Email  : gtomlinson @ overwatch.textron.com
__________________________________________________________


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Colli Bann
Sent: Monday, August 24, 2009 5:25 PM
To: [email protected]
Subject: [osg-users] How to read big openscenegraph files?

Hi,

i have a problem with big (> 5GigaBytes) flt Files: i can“t read them.  When i 
try to read it with the osgDB, i takes 30 minutes and then it finishes with 
"bad alloc" error, consuming more than 90% of the memory. Is there a way to 
read it, without having the whole file in memory? "convert" is not able to 
convert such a file in, say, smaller ive format.

It seems, like it is not possible to read such big databases?

Thank you!

Cheers,
Colli

------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=16658#16658





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