VMware View 5.3 and NVIDIA GRID K2 cards

Any help appreciated

I am running a VMware View 5.3 POC

Vsphere 5.5

NVIDIA-VMWare ESXi 5.5 319.65xxxxxx.vib

View 5.3

SL250s

nVidia GRID K2

Issue

1.

SSH the the host

VT-d (virtual Technology for Directed I/O is enabled in the bios, if i run esxcfg-module -| grep vtddmar, this does not appear as a module.

Am I missing something or ?

2.

This may relate to the above as I am trying to use NVIDIA GRID K2 cards (2 GPU's)  for GPU pass-through, if I enable the PCI on the Hardware settings on the ESXi host for both GPU the card stops working and you can no longer see this by running /etc/init.d/xorg status and or gpuvm. If I click 1 GPU on the PCI devices this comes up with the xorg and gpuvm.

Any help in getting these cards working would be appreciated.

Regards

Paul