@IgorZablotchi-1793 Apologies for the delayed response.
H series support RDMA configuration. H-series features 56 Gb/sec Mellanox FDR InfiniBand in a non-blocking fat tree configuration for consistent RDMA performance. H-series VMs support Intel MPI 5.x and MS-MPI.
You can refer to below article for more information:
https://learn.microsoft.com/en-us/azure/virtual-machines/h-series
The role of the libibverbs library has been taken over by a new package called rdma-core and hosted on github. A multitude of different RDMA packages were pulled together to make the rdma-core package, and all of the components that went into it are not obsolete. Users should transition to the new rdma-core package to get ongoing development and support.
https://azure.microsoft.com/en-in/blog/azure-linux-rdma-hpc-available/
Please 'Accept as answer' if the provided information is helpful, so that it can help others in the community looking for help on similar topics.