I have been referred a client that has installed XenApp on bare metal and has a GRID card in the server. Their XenApp sessions are not seeing the GPU. I have relayed to them that a hypervisor needs to be underneath Windows/XenApp in order to access the GPU on the GRID cards. I know that the intended design of GRID was to have a hypervisor in place and I believe that their configuration will not work. They are intent on implementing it in its current configuration. Could you please give me some technical reasons why it will not work like that?