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From: David Marchand <david.marchand@redhat.com>
To: Aman Kumar <aman.kumar@vvdntech.in>
Cc: dev <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
	 "Song, Keesang" <keesang.song@amd.com>
Subject: Re: [dpdk-dev] [PATCH] config/x86: add support for AMD platform
Date: Tue, 2 Nov 2021 19:45:11 +0100	[thread overview]
Message-ID: <CAJFAV8z5vVuCALNcQG9PnTkGViyocfKNxXcR4tCYVTdbo+enSA@mail.gmail.com> (raw)
In-Reply-To: <20211102145253.413467-1-aman.kumar@vvdntech.in>

On Tue, Nov 2, 2021 at 3:53 PM Aman Kumar <aman.kumar@vvdntech.in> wrote:
>
> -Dcpu_instruction_set=znverX meson option can be used
> to build dpdk for AMD platforms. Supported options are
> znver1, znver2 and znver3.
>
> Signed-off-by: Aman Kumar <aman.kumar@vvdntech.in>
> ---
>  config/x86/meson.build              | 9 +++++++++
>  doc/guides/linux_gsg/build_dpdk.rst | 2 +-
>  2 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/config/x86/meson.build b/config/x86/meson.build
> index 29f3dea181..21cda6fd33 100644
> --- a/config/x86/meson.build
> +++ b/config/x86/meson.build
> @@ -72,3 +72,12 @@ endif
>  dpdk_conf.set('RTE_CACHE_LINE_SIZE', 64)
>  dpdk_conf.set('RTE_MAX_LCORE', 128)
>  dpdk_conf.set('RTE_MAX_NUMA_NODES', 32)
> +
> +# AMD platform support
> +if get_option('cpu_instruction_set') == 'znver1'
> +    dpdk_conf.set('RTE_MAX_LCORE', 256)
> +elif get_option('cpu_instruction_set') == 'znver2'
> +    dpdk_conf.set('RTE_MAX_LCORE', 512)
> +elif get_option('cpu_instruction_set') == 'znver3'
> +    dpdk_conf.set('RTE_MAX_LCORE', 512)
> +endif

I already replied to a similar patch earlier in this release.
https://inbox.dpdk.org/dev/CAJFAV8z-5amvEnr3mazkTqH-7SZX_C6EqCua6UdMXXHgrcmT6g@mail.gmail.com/

So repeating the same: do you actually _need_ more than 128 lcores in
a single DPDK application?


-- 
David Marchand


  parent reply	other threads:[~2021-11-02 18:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-02 14:52 [dpdk-dev] [PATCH] config/x86: add support for AMD platform Aman Kumar
2021-11-02 15:18 ` Thomas Monjalon
2021-11-02 15:56   ` Song, Keesang
2021-11-02 18:45 ` David Marchand [this message]
2021-11-02 19:04   ` Thomas Monjalon
2021-11-18 12:25     ` Thomas Monjalon
2021-11-18 13:52       ` Bruce Richardson
2021-11-18 14:05         ` Thomas Monjalon
2021-11-24 12:36           ` Thomas Monjalon
2021-12-17 20:12             ` Song, Keesang

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