它包括两个或更多的逻辑PCI到PCI的连接桥（PCI-PCI Bridge），以保持与现有PCI兼容。
GPUDirect Peer to Peer(P2P)简介 GPUDirect Peer-to-Peer(P2P) 技术主要用于单机GPU间的高速通信,它使得GPU可以通过PCI Express直接访问目标GPU的显存,避免了通过拷贝到CPU host memory作为中转,大大降低了数据交换的延迟。 以深度学习应用为例,主流的开源深度学习框架(如:TensorFlow、MXNet)都提供了对GPUDirect P2P...
3、GPUDirect Peer to Peer(P2P)简介 GPUDirect Peer-to-Peer(P2P)技术主要用于单机GPU间的高速通信,它使得GPU可以通过PCI Express直接访问目标GPU的显存,避免了通过拷贝到CPU host memory作为中转,大大降低了数据交换的延迟。 以深度学习应用为例,主流的开源深度学习框架(如:TensorFlow、MXNet)都提供了对GPUDirect ...
This is weird. Yournvidia-smi topo -mshows mlx5_0 and GPUs 0/1 to be on the same PCI switch, but the NCCL topology shows the GPU-NIC communication needs to go through the CPU, which explains why we get bad performance. It would be interesting to run again on all 8 GPUs of each...
GPUDirect Peer-to-Peer(P2P) 技术主要用于单机GPU间的高速通信,它使得GPU可以通过PCI Express直接访问目标GPU的显存,避免了通过拷贝到CPU host memory作为中转,大大降低了数据交换的延迟。 以深度学习应用为例,主流的开源深度学习框架(如:TensorFlow、MXNet)都提供了对GPUDirect P2P的支持,NVIDIA开发的NCCL(N...
An InfiniBand (IB) protocol link is used to couple the I/O unit to the computer system. In one case the computer system uses a PCI to IB bridge to couple from the processor to a corresponding IB to PCI bridge in the expansion drawer which couples to the I/O unit using a PCI link....
[AMD] Starship/Matisse PCIe Dummy Host Bridge00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]00:08.0 Host bri...
A high-speed interface used to connect storage networks and computer clusters, introduced in 1999. Using switched, point-to-point channels similar to mainframes and also like PCI Express (PCIe), InfiniBand is designed for fabric architectures that interconnect devices in local networks. ...
[AMD] Starship/Matisse PCIe Dummy Host Bridge00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)00:14.3 ISA bridge: Advanced...
PCI-X support along with DDR memory allows portions of host memory to be configured as a part of system memory using a tranparent PCI bridge allowing the host to directly place HCA related data without going over the PCI-X bus. The DDR memory allows the mapping of different queue entries ...