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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?4RHFJ+XCkdTuGL6aLRS1jyoO58QB8oh2U9RlrNKIipkLntCWcc9+3lhB2pK+?= =?us-ascii?Q?XHt7DN9ELmvKCtNfUVb0xK5btLSqjtpod7t+NdBexH/T9s185Uk1XTifi+jg?= =?us-ascii?Q?47TlGuZSsTpu7U1mKbdGsJNk4l/uvttDCYjwLjLs9A73g10uuGUnRb9v4ax3?= =?us-ascii?Q?vanZxgPPshxT8oXtagnUYDt0veXI6BLV6xzBoRcFiZnfDxtL+3t9Ff6drpXk?= =?us-ascii?Q?tZ3R2raW6Rp0vMSqypS+NMCAjjpMtIwlJup9thrt/TVj8CEsEYrMzPxFyIEc?= =?us-ascii?Q?yVFLVRFf0VkYgxLRv09LKsa0Mc2JejTXwiVL5Ip0XADwJSz/siaP0r6vC2mL?= =?us-ascii?Q?V8IjdvqfSPynjkoyj9IjW6q0Pn+T1Vh+u5gejwgqHEhSvLhbS5oL2S7y09uS?= =?us-ascii?Q?Cp1vZtp5beSs6GoHP5NvBvDxY7rf8RirpJKoWLuChEdagPgZkMKyCMQotOXz?= =?us-ascii?Q?VbUgRuULAIr9tboQKWQc6i0vI/pAMZDz19JlSljimlkixPtPHrxeUv0l7HhE?= =?us-ascii?Q?dJRvsvX1/Qggp+AJdLLLNp96j0SH+Jp3LkbADZZQiZDjD9uuF/LC61XuDe7F?= =?us-ascii?Q?Mn4AvM/v/O207tGiU6Gjsb6HxYoc5P/RuVzdLcCU0RseFSdhr0N7JpgJVhwC?= =?us-ascii?Q?xXNW+UYbshjoU77UlZfyj8Qrl0f8jr8UoLeNQMmLV3+25f6f04oSala7AD5D?= =?us-ascii?Q?WMLbbnlOfOcz7qsNDrbAR8Y81FmmrdWOvbpPgtB3/YIjelgFrb0QnnD/hwA/?= =?us-ascii?Q?YUmb/YghBJBGiP8ZRJ5nc9NWxDzW88lxXsZTtkPOq8cj3UajrW/S8SXW4Dbh?= =?us-ascii?Q?BzavA7jC4RKTANpg71eImw/OHIHNHkTZ7swBO97U2Wn1DWhcWxTXf0HCRsgQ?= =?us-ascii?Q?yvirHCgiXPE2ijG4LxFFkVhJ9rO9JfVL38dsv5VejxBpxOldNgFaORmrYVZJ?= =?us-ascii?Q?5MusKTbXXpSLDNo5lJpNbbon9nMmd50nzIWQ8Voc8lnX0O9dEr9UpT58qUgo?= =?us-ascii?Q?RnXPjqdsYEtRBVFPMxMGVf+esDMtXr0/3nPPcUUUjqk4wB9N67WRtt+DpRC5?= =?us-ascii?Q?ioWGJk9Z/DBOB31DyVIBnUJ+Cw5Pff9L9a6lcc0MX1T6qcX8LlcES/0QTZvp?= =?us-ascii?Q?07ZZg7RozX+CIPcG5dBLmmIHyP7mmmqHij2Tlq1MA5dSPgK6pszwINUmIDIl?= =?us-ascii?Q?8AgrR6TLVxN0w33eJS/nKRY4/8BovHfC+ci7R9tqM7i5NQCQ6XkR6IQKDTHy?= =?us-ascii?Q?8pkhWsA9vEEBnQthf4wasMKSy9vXnMYZFHATXS9ZL/UzEzG7gVFk2M5Z0bKk?= =?us-ascii?Q?oeenBZZaMbMmQrpbmvNGW9Z/c+LPZrobcJVZ5A6ZdRwi0bxpWYDxX1SX2s/T?= =?us-ascii?Q?5JSAxBmRZ0XyNrSSTxuARr5leGbSKhIJA/p6fl5pId+cXqteTN1QIUwaUKje?= =?us-ascii?Q?0PhNbLFjgnOcc1FMEq7uHY6qJEZoV4/sHzqIBQxlB9fayUsw7JjkcHx9iwen?= =?us-ascii?Q?LINsaqnwAr3cYi8Yh5FGcoi5iNxG/u+SCZAWVGP1JrBocqTCDwfz2f4zJ3v6?= =?us-ascii?Q?jgitmd6J8KCepGQWig8=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9ad8534f-71da-40f8-47e7-08dd6c7e5b43 X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB8659.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Mar 2025 15:53:31.1048 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: W08S2Sc7ZtbglHndi4CtJn2cXtgFUy0ipJs2T7h5A9yy4qDoNw1XJ4ZeP69xq9Se X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8314 On Wed, Mar 26, 2025 at 03:29:01PM +0000, Sean Hefty wrote: > > > > If I understand UEC's job semantics correctly, then the local scope > > > > of a job may span multiple local ports from multiple local devices. > > > > It would of course translate into device specific reservations. > > > > > > Agreed. I should have said job id/address has a network address > > > scope. For example, job 3 at 10.0.0.1 _may_ be a different logical > > > job than job 3 at 10.0.0.2. Or they could also belong to the same > > > logical job. Or the same logical job may use different job id values > > > for different network addresses. > > > > > > A device-centric model is more aligned with the RDMA stack. IMO, > > > higher-level SW would then be responsible for configuring and managing > > > the logical job. For example, maybe it needs to assign and configure > > > non-RDMA resources as well. For that reason, I would push the logical > > > job management outside the kernel subsystem. > > > > Like I said already, I think Job needs to be a first class RDMA object that is used > > by all transports that have job semantics. > > How do you handle or expose device specific resource allocations or > restrictions, which may be needed? Should a kernel 'RDMA job > manager' abstract device level resources? > > Consider a situation where a MR or MW should only be accessible by a > specific job. When the MR is created, the device specific job > resource may be needed. Should drivers need to query the job > manager to map some global object to a device specific resource? I imagine for cases like that the job would be linked to the PD and then MR -> PD -> Job. The kernel side would create any HW object for the job when the PD is created for a specific HW device. The PD security semantic for the MR would be a little bit different in that the PD is more like a shared PD. Jason