InfiniBand explained - Stack Overflow
InfiniBand is a high-performance interconnect mainly used in HPC and AI clusters. Compared with Ethernet, it is designed from the ground up for low latency, high throughput, and lossless RDMA …
What is the difference between IPoIB and TCP over InfiniBand?
Dec 28, 2023 · IPoIB (IP-over-InfiniBand) is a protocol that defines how to send IP packets over IB; and for example Linux has an "ib_ipoib" driver that implements this protocol. This driver creates a …
infiniband - OpenMPI 4.1.1 There was an error initializing an ...
Sep 20, 2022 · Similar to the discussion at MPI hello_world to test infiniband, we are using OpenMPI 4.1.1 on RHEL 8 with 5e:00.0 Infiniband controller [0207]: Mellanox Technologies MT28908 Family …
tcpdump - Packet capture in RDMA? - Stack Overflow
Sep 26, 2012 · For Infiniband there is ibdump, however, depending on the Infiniband software you are using (open-source OFED vs. the proprietary Mellanox OFED) and the host channel adapter (HCA) …
infiniband - How to know which RDMA device/port/gid to use? - Stack ...
Feb 19, 2024 · I have two hosts that are connected through RDMA (one is a SmartNIC, the other is the server). How can I know which pair of device/port/gid to use, if for example I want to run ib_send_bw …
infiniband - What is the difference between OFED, MLNX OFED and the ...
Oct 30, 2019 · I'm setting up Infiniband networks, and I do not fully get the difference between the different software stacks. OFED https://www.openfabrics.org/ofed-for-linux/
rdma - Infiniband transport Layer - Stack Overflow
InfiniBand architecture offers a significant improvement for the transport layer over other technologies such as Ethernet: all functions are implemented in the hardware. Is there a way to find out the basic …
infiniband - RDMA access flags validation - Stack Overflow
Jun 19, 2024 · Are you mixing C and C++ languages? I highly recommend you avoid mixing them. The C++ language allows overloading of functions and operators, and the C language doesn't. This …
Rdma infiniband cannot open hosts (iberror: discovery failed) Port ...
Jun 15, 2022 · I am facing an issue while configuring rdma and Infiniband on my two nodes. Both of these two nodes are connected and I have installed the recommended software libraries and …
linux - MPI hello_world to test infiniband - Stack Overflow
Feb 5, 2022 · FWIW, btl/openib is a legacy component, and you should really use UCX. The logs indicate that Open MPI fails to use Infiniband via btl/openib and mtl/ofi (aka libfabric). Though that …