Displaying a bitmap RDMA'd to GPU RAM in Linux?

We have a large system with multiple K20’s and a GTX-680. The '680 is used for the system monitor.

We use RDMA to transfer data to the K20’s and then display the resulting image on the 680 via a window on the desktop. However, the update rate is quite slow and we would prefer to have a real-time or near real-time update.

It would be ideal to use RDMA the final image from one of the K20’s to the '680 and (somehow) instruct the NVidia display driver to display that image in the confines of a window display context.

Is this possible w/the GTX-680? If so, can someone suggest some possibilities?

Thanks much!