Mellanox OFED GPUDirect RDMA

Overview

The latest advancement in GPU-GPU communications is GPUDirect RDMA. This new technology provides a direct P2P (Peer-to-Peer) data path between the GPU Memory directly to/from the Mellanox HCA devices. This provides a significant decrease in GPU-GPU communication latency and completely offloads the CPU, removing it from all GPU-GPU communications across the network.

  • Avoid unnecessary system memory copies and CPU overhead by copying data directly to/from pinned GPU memory
  • Peer-To-Peer Transfers Between GPU device and Mellanox RDMA devices
  • Use high-speed DMA transfers to copy data between P2P devices
  • Eliminate CPU bandwidth and latency bottlenecks using direct memory access (DMA)
  • With GPUDirect RDMA, GPU memory can be used for Remote Direct Memory Access (RDMA) resulting in more efficient applications
  • Boost Message Passing Interface (MPI) Applications with zero-copy support
Driver Platform Systems Requirements
nvidia_peer_memory-1.0-0.tar.gz HCAs
Software/Plugins