Oracle^® X5 Series Servers Administration Guide

Configure Elastic Computing (BIOS Setup Utility)

Use this task to activate or deactivate cores using the BIOS Setup Utility.

• If a core is deactivated in BIOS, it cannot be activated in the OS.

• When you activate or deactivate cores in BIOS, it applies the change to all sockets in the server equally.

• The BIOS Setup Utility provides the ability to select how many cores are active (1 through 18). It does not allow you to select individual cores or ranges of cores.

Before You Begin

Elastic computing requires Intel Speed Step, which can be enabled or disabled in the Advanced - CPU Power Management Configuration screen. This setting is enabled by default.

1. Start the BIOS Setup Utility.
2. Select Advanced > Processor Configuration.
3. Use the Active Processor Cores pull-down menu to select the number of cores you want to be active.
   1. Highlight the desired number of active cores in the list.
   2. Press the Enter key.

      The Active Processor Cores dialog exits and the selected number of cores appears on the Advanced -> Processor Configuration screen.

4. Check Advanced > CPU Power Management Configuration and verify that Intel Speed Step is enabled.
5. After you are finished, select F10 to save your work and exit the BIOS Setup Utility.

See Also

• Understanding Elastic Computing