Fwd: Re: [openib-general] static LID computationwithTS_HOST_DRIVER

[Roland Dreier]

    Yaron> While I agree that other SM's in a recovery/merge phase
    Yaron> should try and preserve the LID's I think a CA shouldn't
    Yaron> just like it is not supposed to change its own P_Key table,

I don't think the P_Key table is a good analogy.  There is a very
clear statement in the IB spec for what values should be in the P_Key
table before the SM sets it.  I don't know of any such statement for
PortInfo:LID.

    Yaron> But any way out of curiosity how do you generate a unique
    Yaron> LID (locally by the host) for every node in the fabric in a
    Yaron> large fabric when the ports are down and the nodes don't
    Yaron> talk to each other ? (I hope not through Ethernet :))

    Yaron> Or how do you anticipate the LMC value (LID spacing)?

If the application cares about this, the administrator has to set
things up so that it can work.

Of course there are scenarios where this breaks.  It's up to the user
to avoid them if it matters.

 - Roland