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Configuring the Server BIOS

Recommended BIOS Configurations for Kunpeng Servers

For details about how to access the BIOS of Kunpeng servers and the menu and parameters on the BIOS screen, see the BIOS Parameter Reference (Kunpeng 920 Processor).

Configuration Item

Value Description

Recommended Configuration

Reason

Power Policy

Sets the energy efficiency mode.

  • Efficiency: indicates the energy-saving mode, which supports Collaborative Processor Performance Control (CPPC) dynamic frequency modulation (FM).
  • Performance: indicates the performance mode. In this mode, no dynamic FM is available, and the operating frequency is fixed at the nominal frequency.

Performance

In the performance mode, no dynamic frequency modulation (FM) is available, and the operating frequency is fixed at the nominal frequency.

Custom Refresh Rate

Sets the memory refresh rate.

Auto

The memory refresh rate is automatically configured.

NUMA

Determines whether to enable non-uniform memory access (NUMA).

Enable (default value)

In most cases, enabling this feature improves the performance of some workloads. Disabling this feature requires that all nodes have the same memory size.

Die Interleaving

Determines whether to enable DIE interleaving. When the DIE interleaving is enabled, the DDR bandwidth can be fully used and the bandwidth of each DDR channel can be balanced to improve the DDR usage efficiency.

Disable (default value)

Retain the default value. After the DIE interleaving is enabled, the memory access may be slow and the performance may deteriorate.

Rank Interleaving

Sets the rank interleaving mode.

4-way Interleave (default value)

Retain the default value.

One Numa Per Socket

Determines whether each CPU has a NUMA node. If you need to set multiple NUMA nodes for each CPU, disable One Numa Per Socket and Die Interleaving.

Disabled (default value)

Retain the default value. If this feature is enabled, the memory access may be slow and the performance may deteriorate.

CPU Prefetching Configuration

Enables CPU prefetching.

Enabled (default value)

In HPC scenarios, data is centralized. Enabling prefetching can effectively improve performance.

Setting the Energy Efficiency Mode to Performance

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Performance Config > Power Policy, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set Power Policy to Performance.
  5. Press F10 to save the BIOS setting.

Setting the Memory Refresh Rate to Auto

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Memory Config > Custom Refresh Rate, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set Custom Refresh Rate to Auto.
  5. Press F10 to save the BIOS setting.

Enabling NUMA

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Memory Config > NUMA, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set NUMA to Enable.
  5. Press F10 to save the BIOS setting.

Disabling DIE Interleaving

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Memory Config > Die Interleaving, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set Die Interleaving to Disable.
  5. Press F10 to save the BIOS setting.

Setting Rank Interleaving to 4-way Interleave

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Memory Config > Rank Interleaving, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set Rank Interleaving to 4-way Interleave.
  5. Press F10 to save the BIOS setting.

Disabling One NUMA Per Socket

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > Memory Config > One NUMA Per Socket, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set One NUMA Per Socket to Disabled.
  5. Press F10 to save the BIOS setting.

Enable CPU Prefetching

  1. Restart the server and access the BIOS.
  2. Enter the BIOS password as prompted. The BIOS setting screen is displayed.
  3. Press the up and down arrow keys to choose Advanced > MISC Config > CPU Prefetching Configuration, and press Enter. The setting page is displayed, as shown in the following figure.

  4. Set CPU Prefetching Configuration to Enabled.
  5. Press F10 to save the BIOS setting.
Parent topic: Hardware Baseline Tuning