[ofa-general] Default value of LocalAckTimeout for a new QP

[Amir Vadai]

Hal Hi,
 
Assuming I  am using OpenSM - how can I tell  it to do  it?
 
Thanks,
Amir

________________________________

From: Hal Rosenstock [mailto:hal.rosenstock at gmail.com]
Sent: Thu 21-May-09 4:20 PM
To: Amir Vadai
Cc: Sean Hefty; Nimrod Gindi; OpenIB
Subject: Re: [ofa-general] Default value of LocalAckTimeout for a new QP



On Thu, May 21, 2009 at 7:58 AM, Amir Vadai <amirv at mellanox.co.il> wrote:
> Sean Hi,
>
> I need to know how is the LocalAckTimeout for a new QP is calculated (for an
> SDP QP).

It's a function of the packet life time on the path from source to
destination and the local CA ack delay.

> Is there a way to change it through a module parameter?
> If not, what is the right way to change it?

It depends on the SM being used. OpenSM has a way to change the path
PLT returned/used.

-- Hal

> Thanks,
> Amir
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