[PATCH] config/x86: config support for AMD EPYC processors

[Ferruh Yigit]

On 10/17/2023 10:45 AM, Kevin Traynor wrote:
> On 16/10/2023 06:20, Tummala, Sivaprasad wrote:
>> [AMD Official Use Only - General]
>>
>> Hi DPDK Techboard,
>>
>> Request to add this topic for discussion in the next techboard meeting.
>>
> 
> Hi Sivaprasad,
> 
> Are you or a representative (Ferruh?) able to attend the techboard
> meeting (3pm UTC Wednesday) to discuss this item?
> 

Hi Kevin,

I confirmed with Siva that both me and Siva will join the meeting.

Thanks,
ferruh

> thanks,
> Kevin.
> 
>> Thanks & Regards,
>> Sivaprasad
>>
>>> -----Original Message-----
>>> From: Tummala, Sivaprasad <Sivaprasad.Tummala at amd.com>
>>> Sent: Monday, October 16, 2023 10:44 AM
>>> To: David Marchand <david.marchand at redhat.com>
>>> Cc: bruce.richardson at intel.com; konstantin.v.ananyev at yandex.ru;
>>> dev at dpdk.org;
>>> dpdk-techboard <techboard at dpdk.org>; Thomas Monjalon
>>> <thomas at monjalon.net>
>>> Subject: RE: [PATCH] config/x86: config support for AMD EPYC processors
>>>
>>> [AMD Official Use Only - General]
>>>
>>> Caution: This message originated from an External Source. Use proper
>>> caution
>>> when opening attachments, clicking links, or responding.
>>>
>>>
>>> [AMD Official Use Only - General]
>>>
>>>> -----Original Message-----
>>>> From: David Marchand <david.marchand at redhat.com>
>>>> Sent: Friday, October 6, 2023 1:21 PM
>>>> To: Tummala, Sivaprasad <Sivaprasad.Tummala at amd.com>
>>>> Cc: bruce.richardson at intel.com; konstantin.v.ananyev at yandex.ru;
>>>> dev at dpdk.org; dpdk-techboard <techboard at dpdk.org>; Thomas Monjalon
>>>> <thomas at monjalon.net>
>>>> Subject: Re: [PATCH] config/x86: config support for AMD EPYC
>>>> processors
>>>>
>>>> Caution: This message originated from an External Source. Use proper
>>>> caution when opening attachments, clicking links, or responding.
>>>>
>>>>
>>>> On Mon, Sep 25, 2023 at 5:11 PM Sivaprasad Tummala
>>>> <sivaprasad.tummala at amd.com> wrote:
>>>>>
>>>>> From: Sivaprasad Tummala <Sivaprasad.Tummala at amd.com>
>>>>>
>>>>> By default, max lcores are limited to 128 for x86 platforms.
>>>>> On AMD EPYC processors, this limit needs to be increased to leverage
>>>>> all the cores.
>>>>>
>>>>> The patch adjusts the limit specifically for native compilation on
>>>>> AMD EPYC CPUs.
>>>>>
>>>>> Signed-off-by: Sivaprasad Tummala <Sivaprasad.Tummala at amd.com>
>>>>
>>>> This patch is a revamp of
>>>>
>>> http://inbox.dpdk.org/dev/BY5PR12MB3681C3FC6676BC03F0B42CCC96789@BY5PR
>>>> 12MB3681.namprd12.prod.outlook.com/
>>>> for which a discussion at techboard is supposed to have taken place.
>>>> But I didn't find a trace of it.
>>>>
>>>> One option that had been discussed in the previous thread was to
>>>> increase the max number of cores for x86.
>>>> I am unclear if this option has been properly evaluated/debatted.
>>>>
>>>> Can the topic be brought again at techboard?
>>>
>>> Hi David,
>>>
>>> The patch is intended to detect AMD platforms and enable all CPU
>>> cores by default
>>> on native builds.
>>>
>>> As an optimization for memory footprint, users can override this by
>>> specifying "-
>>> Dmax_lcores" option based on DPDK lcores required for their usecases.
>>>
>>> Sure, will request to add this topic for discussion at techboard.
>>>>
>>>> Thanks.
>>>>
>>>> -- 
>>>> David Marchand
>>
>