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* [dpdk-users] Queue pairs in C626 QAT Card
@ 2020-12-01 10:45 Joshi, Venkatesh
  2020-12-02  9:33 ` Trahe, Fiona
  0 siblings, 1 reply; 2+ messages in thread
From: Joshi, Venkatesh @ 2020-12-01 10:45 UTC (permalink / raw)
  To: users

Hi,

What is the maximum number of queue pairs in C626 QAT card?

From rte_cryptodev_info_get(), it seems that the maximum number is 2. Is this correct?

Can it be increased via configuration or is this set in hardware?

I have a DPDK application running 5 instances on 5 CPUs. I need the QAT VF 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. 

Regards,
Venkatesh



^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [dpdk-users] Queue pairs in C626 QAT Card
  2020-12-01 10:45 [dpdk-users] Queue pairs in C626 QAT Card Joshi, Venkatesh
@ 2020-12-02  9:33 ` Trahe, Fiona
  0 siblings, 0 replies; 2+ messages in thread
From: Trahe, Fiona @ 2020-12-02  9:33 UTC (permalink / raw)
  To: Joshi, Venkatesh, users; +Cc: Trahe, Fiona



> -----Original Message-----
> From: users <users-bounces@dpdk.org> 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
> 
> Hi,
> 
> 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 device.
> 
> From rte_cryptodev_info_get(), it seems that the maximum number is 2. Is this correct?
[Fiona] Yes - this is a hardware limitation.
> 
> Can it be increased via configuration or is this set in hardware?
> 
> I have a DPDK application running 5 instances on 5 CPUs. I need the QAT VF 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.

> 
> Regards,
> Venkatesh
> 


^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2020-12-02  9:33 UTC | newest]

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2020-12-01 10:45 [dpdk-users] Queue pairs in C626 QAT Card Joshi, Venkatesh
2020-12-02  9:33 ` Trahe, Fiona

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