Vista x64 3D View Loading Local DEM very slow

[sanewcomb]

Hi Scott,

Getting some hours in using TF with new hardware and 64bit OS and have found a potential problem.

I have two custom local DEM files that cover the entire GCNP, broken into two files east and west. These load fine in my old system with XP. When doing the same thing in the new rig I get the brown bar, and eventually see a blue progress indicator, but it is very slow and have not yet had enough time to wait for it to complete. Very slow whether large area or small. Have tried to make sure all the 3D parameters are set the same or similar in the two systems.

These DEM files are about 77MB each.

Steve

[ScottMorris]

Hmm.  That's a strange one.

Have you tried 3D mode with auto-download DEM data?  Does that work?

[ScottMorris]

Got your crash report in climbing analysis with the same DEM files.  Seems there's definitely a problem on Vista64.

Unfortunately it's going to be hard for me to debug since I have no Vista64 machine.  I'll see what my options are for emulating or finding such a machine.

[sanewcomb]

Scott,

Don't spend too much time on it for now. At some point the bugs with x64 architecture will have to be worked out, but not much demand yet and I'm certainly not wedded to Vista x64. Mostly just playing around with it on a new machine and next up is Win 7 beta.

My guess is it has to do with how memory is allocated (or something related to memory functions) for DEM files and what happens when a lot of data is loaded.

Thanks for the quick reply,

Steve

P.S. Auto load works fine as well as loading standard DEM files. I removed the larger DEMs and put in the 10M versions and it worked as expected.