"...As we started to work on building the min-clusters, Jesse
mentioned that he purchased two Intel GigE NICs for each node so we
could play with some of the driver parameters and see how they
compared to the on-board NVidia NICS. Simple enough, we’ll
just set the node Intel NICs to PXE boot and be on our way. As the
nodes booted we waited for the Intel BIOS message to appear so we
could set PXE booting. It never showed up. Checking the BIOS boot
options, there was no indication the card was even present."