Nick Khamis asked: > I was wondering if any effort has been made regarding supporting infiniband >devices to support I/O Virtualization, RDMA etc..? If so, can you please direct >me to the latest documentation.
Adding RDMA support to OpenStack will be a challenge with the current software architecture. What is really needed is adding zero-copy I/O to eventlet socket I/O. Explicit RDMA semantics being visible to OpenStack code would only be possible if *every* device in a cluster supported RDMA, and that would happen so seldom that the code taking explicit advantage of RDMA would Become a maintenance liability. But refactoring the eventlet sockets I/O to use I/O virtualization when available is distinctly possible. It would be major work, but would greatly reduce the memory bandwidth consumption. What you would need to do is convince one of the high speed NIC vendors (10 GbE or InfiniBand) that it was worthwhile to invest in some Python libraries. _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
