Viz Roll: Users Guide: 
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Table 2-1. Tile Appliance
| Name | Type | Default |
| cuda | bool | false |
| viz_nvidia_driver_options | string | --no-network -s |
| viz_nvidia_driver | string | /opt/viz/drivers/nvidia.run |
| viz_tile_bottom_bezel | int | 80 |
| viz_tile_left_bezel | int | 100 |
| viz_tile_resolution | string | 1920x1200 |
| viz_tile_right_bezel | int | 100 |
| viz_tile_top_bezel | int | 80 |
| x11 | bool | true |
If set to True all host with this attribute will have the CUDA toolkit included int the packages installed on the machine. If the host is already installed this will take affect on the next re-installation. Enabling this does not automatically set the nVidia driver to be the CUDA driver, and may required the viz_nvidia_driver attribute to also be changed.
The command line arguments passed to the nVidia driver installation script. The default values work for all drivers included in the Viz Roll, and the attribute should not be modified unless needed.
The full pathname of the nVidia driver installation script. The Viz Roll installs both the production nVidia driver and beta-CUDA driver installation script. This attribute is used to select which driver is installed on first boot after a tile node is first installed (or re-installed).
The size in pixels of the tile's bottom edge bezel (mullion).
The size in pixels of the tile's left edge bezel (mullion).
The pixel resolution of the tile in the standard X11 format of COLxROW.
The size in pixels of the tile's right edge bezel (mullion).
The size in pixels of the tile's top edge bezel (mullion).
If True one of more X11 displays are configured on the tile machine. This attribute is from the Rocks base and should not be changed.