From: Francesco Pietra (chiendarret_at_gmail.com)
Date: Mon Jul 04 2011 - 02:19:02 CDT

Minor problems suddenly arising with VMD-cuda.

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OS: Debian amd64 wheezy

GNOME 2-30

nvidia driver 275.09.07.-1 (compiled within the OS)

VMD 1.9 CUDA

Gigabyte GA 890FXAUD5

AMD PhenomII 1075T

2 x GTX 470
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The first time VMD is started from a gnome terminal window, it works
nicely. If the terminal window is closed, then another one opened, and
VMD commanded, the same phrase "creating
CUDA..." appears, while VMD does not start, and the computer hangs.
**************

That there is something wrong with my system is also indicated by
having to launch NAMD-CUDA from within a gnome terminal window (after
command "nvidia-smi -L" to activate the two GTX 470). Whereby NAMD
works perfectly.This procedure does not work from the linux prompt,
without X-server and gnome. It was not so initially, a few days ago,
when NAMD could be launched without X-server/gnome, after 'nvidia-smi
-L". In between the two periods, I had carried out a Debian upgrading
from nvidia driver 270.41.19-1 to 275.09.07-1, but I have no firm
grounds to attribute present issues to such upgrading.

I wonder whether there is a command to 'stop' the GTX 470, just the
reverse of 'nvidia-smi -L' that should (or 'could', in my case) be
issued at the end of a VMD or NAMD session.

Thanks

francesco pietra