Infiniband network consultation & problem analysis in High Performance Computing (HPC) Environment

Very highly skilled / experienced expert assistance in analyzing and debug of NVIDIA / Mellanox INFINIBAND fabric using IPoIB in a high performance computing environment. There are current issues on the IB network significantly impacting performance, but the root causes have not been isolated. The fabric is set up in a spine/leaf configuration with 15 HDR switches. The current switches are not (and will not) be under NVIDIA support, so deep knowledge of NVIDIA/Mellanox switches is required.