I was seeing a similar (perhaps the same) problem a while back. I was
also trying to build a database without imagery (just DTED only). I got
sidetracked with other tasks so I wasn't able to chase down the problem.

I was running an older version of OSG (2.9.8 I believe) and VPB on a
Fedora core 13 machine. Resources were not a problem with this machine
(12GB RAM, 16T disk space, Nvidia 9800 GTX card) so I doubt that was the
problem.

I too would be interested to find out what's causing the build failure
you're seeing...

-Shayne

-----Original Message-----
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Torben
Dannhauer
Sent: Sunday, October 09, 2011 5:12 AM
To: osg-users@lists.openscenegraph.org
Subject: [osg-users] [vpb] Large VPB Database build fails without

Hi,

I try to build a database with DEM but without textures. 
After 317 tasks it fails and has still 1595182 tasks pending. After the
fail it blacklists the one machine and so finishes the run.

The log file of one of these tasks is the following:

Code:

0.129        : Adding terrainTile 
5.253        : getTaskName(5,33,0) no nest, 6 12
5.253        : DataSet::_run() 6 12
17.588       : started DataSet::createDestination(13)
17.637       : Time for after_reproject 0.049001
17.686       : local_extents = xMin() -180.000000 180.000000
17.686       :                 yMin() -60.000000 60.000000
17.686       : AR=3.000000 C1=3 R1=1
17.686       : createNewDestinationGraph
17.926       : Time for
_destinationGraph->computeMaximumSourceResolution() = 0.000000
17.926       : Time for createDestinationGraph 0.240480
17.926       : Time for after_computeNeighbours 0.000010
17.926       : completed DataSet::createDestination(13)
17.926       : Error: no destination graph built, cannot proceed with
build.
17.926       : Time to write out DatabaseRevision::FileList - FilesAdded
terrain_subtile_L5_X33_Y0/terrain_L5_X33_Y0.osgb.task.0.added, 0
17.926       : Time to write out DatabaseRevision::FileList -
FilesRemoved
terrain_subtile_L5_X33_Y0/terrain_L5_X33_Y0.osgb.task.0.removed, 0
17.926       : Time to write out DatabaseRevision::FileList -
FilesModified
terrain_subtile_L5_X33_Y0/terrain_L5_X33_Y0.osgb.task.0.modified, 0
17.926       : Elapsed time = 17.926306




The situation is the same if i resume the build with 

Code:

vpbmaster --tasks build_master.tasks 



It reloads all tasks from file and than again fails on the identical
tasks.

I don't know why osgdem complains about the missing destination graph
with

Code:

Error: no destination graph built, cannot proceed with build.




Any idea why it fails?

my system is:
Kubuntu 10.04  64 bit.
Kernel 2.6.38-11-generic 
12GB RAM
OSG and VPB from trunk last week.



Thank you for your help,
Torben

------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=43278#43278





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