[gpfsug-discuss] verbsPortsOutOfOrder

[Tomer Perry]

Simon,

I believe that adaptive routing might also introduce out of order packets 
- but I would ask Mellanox as to when they recommend to use it.

Regards,

Tomer Perry
Scalable I/O Development (Spectrum Scale)
email: tomp at il.ibm.com
1 Azrieli Center, Tel Aviv 67021, Israel
Global Tel:    +1 720 3422758
Israel Tel:      +972 3 9188625
Mobile:         +972 52 2554625




From:   Simon Thompson <S.J.Thompson at bham.ac.uk>
To:     gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:   03/10/2019 12:14
Subject:        [EXTERNAL] Re: [gpfsug-discuss] verbsPortsOutOfOrder
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Thanks Tomer.
 
That makes sense, also not something I think we need to worry about ? I 
assume that relates to hypercube or dragonfly or some such though the 
Mellanox docs only say ?some topologies?
 
Simon
 
From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of 
"TOMP at il.ibm.com" <TOMP at il.ibm.com>
Reply-To: "gpfsug-discuss at spectrumscale.org" 
<gpfsug-discuss at spectrumscale.org>
Date: Wednesday, 2 October 2019 at 11:54
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] verbsPortsOutOfOrder
 
Simon,

It looks like its setting the Out Of Order MLX5 environmental parameter:
https://docs.mellanox.com/display/MLNXOFEDv451010/Out-of-Order+%28OOO%29+Data+Placement+Experimental+Verbs




Regards,

Tomer Perry
Scalable I/O Development (Spectrum Scale)
email: tomp at il.ibm.com
1 Azrieli Center, Tel Aviv 67021, Israel
Global Tel:    +1 720 3422758
Israel Tel:      +972 3 9188625
Mobile:         +972 52 2554625




From:        Simon Thompson <S.J.Thompson at bham.ac.uk>
To:        "gpfsug-discuss at spectrumscale.org" 
<gpfsug-discuss at spectrumscale.org>
Date:        01/10/2019 18:17
Subject:        [EXTERNAL] [gpfsug-discuss] verbsPortsOutOfOrder
Sent by:        gpfsug-discuss-bounces at spectrumscale.org




Hi,
 
In mmdiag --config, we see ?verbsPortsOutOfOrder? as an unset option. 
Could anyone comment on what that might do and if it relates to the 
ordering that ?verbsPorts? are set?
 
Thanks
 
Simon_______________________________________________
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