4 Replies Latest reply on Sep 12, 2016 1:44 AM by dwaxman

    Testing MCX455A bandwidth between Dell servers

    tom.fillenwarth@dynetics.com

      I am testing MCX455A bandwidth between Dell servers using the commands:

      Server: Ib_write-bw –d mlx5_0  –i  1 –a –F
      and

      Client: Ib_write-bw –d mlx5_0  –i  1 –a –F  <server address>

      The results looks fine until # bytes = 65536

      Then I get the message:

      mlx5: usb1 : got completion with errors

      00000000 00000000 00000000 00000000

      00000000 00000000 00000000 00000000

      00000000 00000000 00000000 00000000

      00000000 00008813 08000029 40807dd3

      Problems with warm up

       

      This test used to work to completion and I don't think I've changed the configuration.  I have the same problem with multiple cards (I have 13).