RTX4090 GPUDirect P2P Unlocked!

If you want see the test results directly, please jump to the Test the unlocked performance section. What is P2P? From NVIDIA: GPUDirect Peer to Peer enables GPU-to-GPU copies as well as loads and stores directly over the memory fabric (PCIe, NVLink). GPUDirect Peer to Peer is supported natively by the CUDA Driver. As you can see, GPUDirect P2P allows for direct memory access between GPUs,…