[Users] opensm params

[Hal Rosenstock]

FDR port is capable of negotiating at QDR as long as it's supported and
enabled.

FDR10 is Mellanox proprietary speed and not part of IBTA standard. It's
64/66 encoded rather than 8B/10B. QDR is effective data rate around 8 Gbps
whereas FDR10 is around 10 Gbps.


On Mon, Jun 5, 2017 at 11:34 AM, Michael Di Domenico <mdidomenico4 at gmail.com
> wrote:

> On Mon, Jun 5, 2017 at 11:11 AM, Hal Rosenstock
> <hal.rosenstock at gmail.com> wrote:
> > For some port stuck at FDR10, is FDR enabled on both local port and peer
> > port ?
>
> apparently, this might be a case of works as designed.  i'm confirming
> with others now, in that we have FDR10 switch spines/leafs instead of
> FDR switch spines/leafs, therefore i suspect we cannot run FDR 56Gb
>
> what also isn't clear yet, is if we swapped the FDR10 spines/leafs
> with FDR spine/leafs whether our QDR HCA's would still work
>
> i wasn't aware FDR came in two versions, guess i have some reading up to do
>
> > What is OpenSM version string ?
>
> we're running 3.3.17, from the rhel6.9 distro
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