Can anybody explain what is InfiniBand? What is the key differences in comparison with Ethernet, how these differences allow for it to be faster than Ethernet? In the official description from mel...

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 …

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 …

Is it possible to use RDMA over native InfiniBand without IPoIB (using just guid or lid)? I have checked Infiniband addressing - host names to IB address without IBoIP and in RDMA …

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 …

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/

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 …

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 …

Jul 2, 2022 · All libibverbs APIs are thread-safe, so having multiple threads post to a single QP is obviously not a safety issue. That said, the concurrency is being handled somewhere along …

I'm not sure there's a deterministic and portable way to answer your question. In some devices, the device pose a limit on the work queue size, rather than the number of entries (e.g., …