Is it possible to communicate send AMD GPU data directly from Windows machine to Linux

[sen-sd]

My doubt is with libfabric can we send GPU data from Windows to Linux with out CPU copy.
In our environment we are using Mellanox ConnectX-5 for RDMA and GPU we are using Radeon WX7100.

I checked libfabric code and found that for RDMA for windows Libfabric internally using NetworkDirect.
And it is using IND2MemoryRegion::Register() function to register application allocated memory and no option found to send GPU buffer. Please help

Client - Windows -> Windows 10, Mellanox ConnectX-5 , Radeon WX7100
Server - Linux -> Mellanox ConnectX-5

[shefty]

I'm not aware of Windows having OS support to setup the PCI peer to peer transfers that are needed for a NIC to access GPU memory directly. The Linux feature for this is called dma-buf. There's no Windows OS equivalent.

[sen-sd]

Thank you for reply. So hope in Windows , Nvidia GPU also will not support DMA.
In libfabric source found CUDA support, Is this only for Linux.