Now I have two GeForce 9600 GT on my workstation, with the Bus ID 1:0:0 and 2:0:0. I create two X-Windows on these 2 GPUs respectively, and create two VdpDevices which associate with these 2 GPUs. However, I am not able to create two presentation queues on them!
What is the problem? Can only one presentation queue be supported on the current driver even if we have two independent graphic cards?