Make each GPU on a Titan Z output to separate xscreen/monitor ?

I have a linux system (CentOS 6.5) with a Quadro K2200 and a GeForce GTX Titan Z in it.
I’m trying to have a separate x-screen on each GPU.
Xscreen0 is setup on GPU0 (the Quadro), but xscreen 1 & 2 are both on GPU1 with no xscreens on GPU2. I don’t see any way to make xscreen 2 be supported on GPU2 (the 2nd GPU on the Titan). I’ve tried plugging a monitor for screen 2 into a dvi connector and the displayport on the Titan card itself that didn’t change anything.

Here’s my output of nvidia-xconfig --tree:

Using x configuration file: “/etc/X11/xorg.conf”.

serverlayout “layout0”
–> screen “screen0”
–> monitor “monitor0”
–> vendorname “unknown”
–> modelname “hp la2205”
–> horizsync 24.0-83.0
–> vertrefresh 50.0-76.0
–> device “device0”
–> driver “nvidia”
–> vendorname “nvidia corporation”
–> boardname “quadro k2200”
–> busid “pci:1:0:0”
–> option “stereo” “0”
–> option “metamodes” “dvi-i-1: nvidia-auto-select +0+0, dp-0: nvidia-auto-select +1680 +0”
–> option “sli” “off”
–> option “multigpu” “off”
–> defaultcolordepth 24
–> screen “screen1”
–> monitor “monitor1”
–> vendorname “unknown”
–> modelname “hp lp1965”
–> horizsync 24.0-83.0
–> vertrefresh 48.0-76.0
–> device “device1”
–> driver “nvidia”
–> vendorname “nvidia corporation”
–> boardname “geforce GTX titan z”
–> busid “pci:5:0:0”
–> screen “0”
–> option “stereo” “0”
–> option “metamodes” “dvi-d-0: nvidia-auto-select +0+0”
–> option “sli” “off”
–> option “multigpu” “off”
–> option “basemosaic” “off”
–> defaultcolordepth 24
–> screen “screen2”
–> monitor “monitor2”
–> vendorname “unknown”
–> modelname “hp lp1965”
–> horizsync 24.0-83.0
–> vertrefresh 48.0-76.0
–> device “device2”
–> driver “nvidia”
–> vendorname “nvidia corporation”
–> boardname “geforce GTX titan z”
–> busid “pci:5:0:0”
–> screen “1”
–> option “stereo” “0”
–> option “metamodes” “dvi-i-1: nvidia-auto-select +0+0”
–> option “sli” “off”
–> option “multigpu” “off”
–> option “basemosaic” “off”
–> defaultcolordepth 24
–> inputdevice “keyboard0”
(all of the keyboard stuff…)
–> inputdevice “mouse0”
(all of the mouse stuff…)
–> option “xinerama” “0”

Can’t each GPU on a dual GPU card have its output go to a xscreen?
Basically, I’ll want to just run my dual monitors for the desktop (xscreen 0) with the Quadro and
do some separate rendering on each GPU of the Titan Z. I want the images that each GPU of the Titan Z makes go to a

separate monitor.
Please help! Thanks a lot.