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Intel Overhauls & Replaces Its RDMA Linux Driver

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  • Intel Overhauls & Replaces Its RDMA Linux Driver

    Phoronix: Intel Overhauls & Replaces Its RDMA Linux Driver

    Intel has wrapped up a 3+ year effort to overhaul and replace its existing RDMA (Remote Direct Memory Access) driver. With Linux 5.14 is their shiny new "IRDMA" driver while their former driver is being immediately removed...

    https://www.phoronix.com/scan.php?pa...placement-5.14

  • #2
    Can anyone list some higher-level protocols or popular services that are built atop RDMA?

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    • #3
      I believe that both samba and nfs4 can be configured to take advantage advantage of RDMA. I think MPI (used in some HPC applications) can also use this.

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      • #4
        Originally posted by coder View Post
        Can anyone list some higher-level protocols or popular services that are built atop RDMA?
        It's Infiniband class hardware and the altered Ethernet drivers to use it are 10GbE+ NICs. Anything that uses Ethernet or any other hardware they adapt to use Infiniband are theoretically capable of running on top of that fabric. This isn't something you're going to find outside of datacenters like NOCs, datawarehouses, etc.

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        • #5
          Originally posted by coder View Post
          Can anyone list some higher-level protocols or popular services that are built atop RDMA?
          ZFS (over nfs etc) over RDMA is one use case

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          • #6
            Originally posted by coder View Post
            Can anyone list some higher-level protocols or popular services that are built atop RDMA?
            Off the top of my head:

            NFS can run over RDMA instead of IP.
            NVMe over Fabrics runs over RDMA.
            SMB Direct runs over RDMA instead of IP.
            MPI can run over RDMA, IIRC.

            I think websockets can run over RDNA but I wouldn't swear to it.

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