[libfabric-users] netdir / verbs interop
sean.hefty at intel.com
Thu Nov 12 14:49:07 PST 2020
> >>> Interopt between Linux and Windows has never been tested. It should be able to be
> made to work, but likely requires work.
> I stumbled across one interop issue already. netdir supports up to 256 bytes of
> CM_DATA, verbs only supports 56 bytes (VRB_CM_DATA_SIZE), and verbs sets the first byte
> to the length of the data. fi_setopt isn't implemented for either provider. Is there
> any other way to change this? Again, I suspect not, just want to confirm.
The cm data size is limited by the underlying RoCE/InfiniBand protocol. 56 bytes will be the real limit.
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