[Users] opensm params

[Hal Rosenstock]

Hi,

If you want to disable fdr10, there is fdr10 option in opensm.conf which
should be set to 0:

# FDR10 on ports on devices that support FDR10
# Values are:
#    0: don't use fdr10 (no MLNX ExtendedPortInfo MADs)
#    Default 1: enable fdr10 when supported
#    2: disable fdr10 when supported
fdr10 0

You may need to bounce the links which are at fdr10 but the link would've
come up at FDR over FDR10 if that negotiation was successful so I don't
think changing fdr10 option will have an effect. Are your cables good for
FDR ?

I have no idea what is causing bad Qkey traps to the SM in your
configuration.

-- Hal

On Mon, Jun 5, 2017 at 10:15 AM, Michael Di Domenico <mdidomenico4 at gmail.com
> wrote:

> i'm having trouble getting a fabric tuned up, and i've not done IB
> tuning in many years
>
> assume we're starting with a default opensm and no partitions.conf file
>
> host hca's are mellanox connectx-3 qdr
> storage hca's are mellanox connectx-4 fdr
> single fat core switch (no edges), mellanox fdr
>
> what would be the ideal knobs to turn in opensm and partitions.conf to
> get the fabric up full speed.
>
> currently, i'm not able to get the connectx-4 fdr cards to switch from
> FDR10 to FDR mode and when the nodes register it's throwing "Bad_QKey"
> errors in the opensm logs.  ibstat, shows "Rate: 40 (FDR10)"
>
> yes, i know this is a bit of a loaded question...
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