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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2880.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0cb72ed8-1a56-4af0-f443-08d896a54319 X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Dec 2020 09:33:01.1120 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 9H2AXIoMEaFMsLyM0JR0SQn13dtNOztKSIvGMWQcV3nAmM21xQwghVjL/jpRyyd4tX7Kl3weuES8Gj8+iXTTUA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB3022 X-OriginatorOrg: intel.com Subject: Re: [dpdk-users] Queue pairs in C626 QAT Card X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" > -----Original Message----- > From: users On Behalf Of Joshi, Venkatesh > Sent: Tuesday, December 1, 2020 10:46 AM > To: users@dpdk.org > Subject: [dpdk-users] Queue pairs in C626 QAT Card >=20 > Hi, >=20 > What is the maximum number of queue pairs in C626 QAT card? [Fiona] I'm not familiar with the card numbers but assume this has a C62X d= evice. >=20 > From rte_cryptodev_info_get(), it seems that the maximum number is 2. Is = this correct? [Fiona] Yes - this is a hardware limitation. >=20 > Can it be increased via configuration or is this set in hardware? >=20 > I have a DPDK application running 5 instances on 5 CPUs. I need the QAT V= F to be bound to each of the > CPUs. But, this limitation of 2 queue pairs means that only 2 of the CPUs= can communicate with QAT VF > at any given point. [Fiona] So you should allocate 3 VFs to the application, giving you 6 qps. >=20 > Regards, > Venkatesh >=20