netdev - RE: [RFC PATCH 00/13] Ultra Ethernet driver introduction

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Date: Mon, 31 Mar 2025 19:49:12 +0000
From: Sean Hefty <shefty@...dia.com>
To: Yunsheng Lin <linyunsheng@...wei.com>, Jason Gunthorpe <jgg@...dia.com>
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	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: RE: [RFC PATCH 00/13] Ultra Ethernet driver introduction

> Through reading this patchset, it seems the semantics of 'job' for UEC is about
> how to identify a PDC(Packet Delivery Context) instance, which is specified by
> src fep_address/pdc_id and dst fep_address/pdc_id as there seems to be more
> than one PDC instance between two nodes, so the 'job' is really about
> grouping processes from the same 'job' to use the same PDC instance and
> preventing processes from different 'job' from using the same PDC instance?

UEC targets HPC and AI workloads, so the concept of a job in this discussion represents a parallel application.  I.e. a group of processes across multiple nodes communicating.

- Sean