[VirtualGL-Users] VGL with multiple gpus and X servers

[Mike B. <mb...@bi...>]

I'm trying to configure multiple gpus for use with
VGL.  I've been using VGL with a single gpu for some
time.  The new system has 4 total gpus, and is running
both VGL and TurboVNC server.

After configuring the system to start 4 X servers, I
start TurboVNC server and client sessions as usual.  I
run my application using vglrun, making sure to set
VGL_DISPLAY to the X server I'm targeting.  However,
OpenGL graphics are only visible when targeting the
highest number X server available on the system, in my
case :3.  If I target another server, the OpenGL
graphics window is all black.

I also set vglgenkey to run for all X servers at
startup, but no luck.

Is there a configuration step that is missing?  My
xorg.conf is below.

Thanks,

Mike



xorg.conf:
# nvidia-xconfig: X configuration file generated by
nvidia-xconfig
# nvidia-xconfig:  version 1.0 
(buildmeister@builder26)  Wed Nov  1 19:48:05 PST 2006
# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "Default Layout"
	Screen      0  "Screen0" 0 0
	Screen      1  "Screen1" RightOf "Screen0"
	Screen      2  "Screen2" RightOf "Screen1"
	Screen      3  "Screen3" RightOf "Screen2"
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	Option	    "Xinerama" "off"
	Option	    "Clone" "on"
EndSection

Section "Files"

# RgbPath is the location of the RGB database.  Note,
this is the name of the 
# file minus the extension (like ".txt" or ".db"). 
There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are
concatenated together)
# By default, Red Hat 6.0 and later now use a font
server independent of
# the X server to render fonts.
	RgbPath      "/usr/X11R6/lib/X11/rgb"
	FontPath     "unix/:7100"
EndSection

Section "Module"
	Load  "dbe"
	Load  "extmod"
	Load  "fbdevhw"
	Load  "glx"
	Load  "record"
	Load  "freetype"
	Load  "type1"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled
(eg, with xset(1))
#	Option	"Xleds"		"1 2 3"
# To disable the XKEYBOARD extension, uncomment
XkbDisable.
#	Option	"XkbDisable"
# To customise the XKB settings to suit your keyboard,
modify the
# lines below (which are the defaults).  For example,
for a non-U.S.
# keyboard, you will probably want to use:
#	Option	"XkbModel"	"pc102"
# If you have a US Microsoft Natural keyboard, you can
use:
#	Option	"XkbModel"	"microsoft"
#
# Then to change the language, change the Layout
setting.
# For example, a german layout can be obtained with:
#	Option	"XkbLayout"	"de"
# or:
#	Option	"XkbLayout"	"de"
#	Option	"XkbVariant"	"nodeadkeys"
#
# If you'd like to switch the positions of your
capslock and
# control keys, use:
#	Option	"XkbOptions"	"ctrl:swapcaps"
# Or if you just want both to be control, use:
#	Option	"XkbOptions"	"ctrl:nocaps"
#
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "us"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "IMPS/2"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5"
	Option	    "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor 1280x1024"
	HorizSync    31.5 - 94.0
	VertRefresh  50.0 - 90.0
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor 1280x1024"
	HorizSync    31.5 - 94.0
	VertRefresh  50.0 - 90.0
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "Monitor2"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor 1280x1024"
	HorizSync    31.5 - 94.0
	VertRefresh  50.0 - 90.0
	Option	    "dpms"
EndSection

Section "Monitor"
	Identifier   "Monitor3"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor 1280x1024"
	HorizSync    31.5 - 94.0
	VertRefresh  50.0 - 90.0
	Option	    "dpms"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "nvidia"
	VendorName  "Videocard vendor"
	BoardName   "VESA driver (generic)"
	BusID       "PCI:26:0:0"
EndSection

Section "Device"
	Identifier  "Videocard1"
	Driver      "nvidia"
	VendorName  "Videocard vendor"
	BoardName   "VESA driver (generic)"
	BusID       "PCI:27:0:0"
EndSection

Section "Device"
	Identifier  "Videocard2"
	Driver      "nvidia"
	VendorName  "Videocard vendor"
	BoardName   "VESA driver (generic)"
	BusID       "PCI:90:0:0"
EndSection

Section "Device"
	Identifier  "Videocard3"
	Driver      "nvidia"
	VendorName  "Videocard vendor"
	BoardName   "VESA driver (generic)"
	BusID       "PCI:91:0:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes    "1280x1024" "1280x960" "1152x864"
"1024x768" "800x600" "640x480"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Videocard1"
	Monitor    "Monitor1"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes    "1280x1024" "1280x960" "1152x864"
"1024x768" "800x600" "640x480"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen2"
	Device     "Videocard2"
	Monitor    "Monitor2"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes    "1280x1024" "1280x960" "1152x864"
"1024x768" "800x600" "640x480"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen3"
	Device     "Videocard3"
	Monitor    "Monitor3"
	DefaultDepth     24
	SubSection "Display"
		Depth     24
		Modes    "1280x1024" "1280x960" "1152x864"
"1024x768" "800x600" "640x480"
	EndSubSection
EndSection



 


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