Hi Lily,
I think coordinated congestion control in AI clusters is a good topic for
the AIDC/HPC side meeting.

Hesham

On Sun, Oct 22, 2023, 9:10 PM Lvyunping (Lily) <lvyunping=
[email protected]> wrote:

> Hi,
>
> I’ve posted a new draft, ‘Coordinated congestion management’:
> https://datatracker.ietf.org/doc/draft-lyu-rtgwg-coordinated-cm/
>
>
>
> This is mainly for AI fabric which is sensitive to bandwidth. Adaptive
> routing is a main approach to improve path utilization and avoid path
> congestion caused by asymmetric traffic, while congestion control is
> another important mechanism in congestion management to alleviate
> congestion. Currently they work independently, that results in unnecessary
> throughput reduction. This draft talks about the issue and proposes a
> coordinated scheme for AR and CC . It identifies the causes of congestion,
> and uses ‘coordination tag’ in data packets to instruct network switches to
> perform appropriate congestion management mechanism.
>
>
>
> We encourage you to read the draft and provide your feedback and comments.
>
>
>
> Thanks!
>
> Lily
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