Re: [RFC] doc/linux_gsg: add amd configuration section

["Varghese, Vipin" <vipin.varghese@amd.com>]

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Got `Superseded` is there a new version shared for `AMD tuning guide`?

On 10/10/2023 9:04 PM, Vipin Varghese wrote:
> Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
>
>
> Add AMD EPYC SoC tuning guide as new setcion of linux getting
> started guide.
>
> Signed-off-by: Vipin Varghese<vipin.varghese@amd.com>
> ---
>   doc/guides/linux_gsg/amd_platform.rst | 63 +++++++++++++++++++++++++++
>   doc/guides/linux_gsg/index.rst        |  1 +
>   2 files changed, 64 insertions(+)
>   create mode 100644 doc/guides/linux_gsg/amd_platform.rst
>
> diff --git a/doc/guides/linux_gsg/amd_platform.rst b/doc/guides/linux_gsg/amd_platform.rst
> new file mode 100644
> index 0000000000..cdb535e9c0
> --- /dev/null
> +++ b/doc/guides/linux_gsg/amd_platform.rst
> @@ -0,0 +1,63 @@
> +..  SPDX-License-Identifier: BSD-3-Clause
> +    Copyright(c) 2023 Advanced Micro Devices, Inc. All rights reserved.
> +
> +How to get best performance on AMD platform
> +===========================================
> +
> +This document shares step-by-step guide for configuring AMD EPYC SoC across various families for getting best performance for DPDK applications.
> +Various factors like BIOS, Numa Per Socket, Memory per Numa, near-far from IO device affects the overall performance.
> +
> +These are covered in various sections of tuning guides shared below.
> +
> +
> +Tuning Guide for AMD EPYC SoC
> +-----------------------------
> +
> +#. `MILAN<https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/tuning-guides/data-plane-development-kit-tuning-guide-amd-epyc7003-series-processors.pdf>`_
> +
> +#. `GENOA<https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/tuning-guides/58017-amd-epyc-9004-tg-data-plane-dpdk.pdf>`_
> +
> +#. `BERGAMO|SIENNA<https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/tuning-guides/58310_amd-epyc-8004-tg-data-plane-dpdk.pdf>`_
> +
> +
> +General Requirements
> +--------------------
> +
> +Memory
> +~~~~~~
> +
> +Refer `Memory Configuration` section for SoC specific details.
> +
> +Note: general thumb rule is to ensure that each memory channel has at least one memory DIMM populated. The ideal memory size for each is at least 8|16|32 GB ECC modules.
> +
> +
> +BIOS
> +----
> +
> +Refer `BIOS Performance` section in tuning guide for recommended settings.
> +
> +
> +Linux Grub
> +----------
> +
> +Refer `Linux OS & Kernel` in tuning guide for recommended settings.
> +
> +
> +NIC and Accelerator
> +-------------------
> +
> +AMD EPYC supports PCIe Generation of 1|2|3|4|5 depending upon SoC families. For best performance ensure the right slots are used which provides adequate bandwidth.
> +
> +Use ``lspci`` to check the speed of a PCI slot ::
> +
> +      lspci -s 41:00.0 -vv | grep LnkSta
> +
> +      LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- ...
> +      LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete+ ...
> +
> +
> +Compiler
> +-------
> +
> +Refer `Compiler Flags` for recommended version and `-march` flags.
> +
> diff --git a/doc/guides/linux_gsg/index.rst b/doc/guides/linux_gsg/index.rst
> index c3e67bf9ec..ecdaf35eec 100644
> --- a/doc/guides/linux_gsg/index.rst
> +++ b/doc/guides/linux_gsg/index.rst
> @@ -21,3 +21,4 @@ Getting Started Guide for Linux
>       linux_eal_parameters
>       enable_func
>       nic_perf_intel_platform
> +    amd_platform
> --
> 2.34.1
>

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