Scenario: I have two machines, a client and a server, connected with Infiniband. The server machine has an NVIDIA Fermi GPU, but the client machine has no GPU. I have an application running on the...

Is there any utility like tcpdump in Linux for capturing the traffic which is going over RDMA channel? (Infiniband/RoCE/iWARP)

I'm trying to build and run the RDMA examples here. But because I'm just exploring, I don't have any hardware capable of managing RDMA. I get errors like this when I try to run the example code. ...

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...

I have a cluster with a high performance network (InfiniBand). However when I set up my Dask scheduler and workers, performance doesn't seem to be as fast as I would expect. How can I tell Dask to ...

I have basic understanding of both JSOR and jVerbs. Both handle limitations of JNI and use fast path to reduce latency. Both of them use user Verbs RDMA interface for avoiding context switch and p...

I am writing an RDMA (InfiniBand) kernel module. Up to now I have been successful creating the protection domain, completion queues for send and receive queues. But whenever I try to create the Q...

I like InfiniBand promise of 40Gbit/s network. My needs do not map onto the MPI model with one core node + slaves, and if possible I would prefer not to use MPI at all. I need simple connect/send/r...

I'm writing a multi-threaded OpenMPI application, using MPI_Isend and MPI_Irecv from several threads to exchange hundreds of messages per second between ranks over InfiniBand RDMA. Transfers are i...

I've just started getting familiar with infiniband and I'm wanting to understand the methods you can use to address the infiniband nodes. Based on the code is the example from: RDMA read and write...

Debugging my program on big counts of kernels, I faced with very strange error of insufficient virtual memory. My investigations lead to peace of code, where master sends small messages to each sla...

I have a few multi-core computers connected by Infiniband network. I would like to have some low-latency computation on a pool of shared memory, with remote atomic operations. I know RDMA is the wa...

Can someone explain the concepts of IPoIB and TCP over InfiniBand? I understand the overall concept and data rates provided by native InfiniBand, but don't quite understand how TCP and IPoIB fit in...