| [an error occurred while processing this directive] |
 |
|
HP has discovered some issues regarding Intel and AMD dual core processors and Linux. These issues are not ProLiant specific. HP is working with Red Hat and Novell to get these issues corrected as soon as possible.
For the purpose of this document, a dual core processor is considered two logical processors and a hyperthreaded processor is considered two logical processors. This means a dual core, hyperthreaded processor is considered four processors.
If a server's processor configuration creates more logical processors than a Linux OS supports, HP recommends to disable hyperthreading in the ROM-Based Setup Utility (RBSU).
Please click on a version below for specific details regarding processor support and that version of Linux.
|
Red Hat Enterprise Linux 4 Update 3 (AMD64/EM64T) supports 64 logical processors. To enable greater than eight processors, use the largesmp kernel.
Red Hat Enterprise Linux 4 Update 3 and greater (x86) support 32 logical processors. No extra steps are required to enable these processors.
Red Hat Enterprise Linux 4 Update 2 (AMD64/EM64T) supports 8 logical processors. No extra steps are required to enable these processors. HP and Red Hat are working to enable the use of additional logical processors in the future.
Red Hat Enterprise Linux 4 Update 1 and Update 2 (x86) support 32 logical processors. To enable more than 8 logical processors, the boot parameter "apic=bigsmp" must be used. To add this boot parameter permanently, perform the following steps:
- vi /etc/grub.conf
- Add the text "apic=bigsmp" at the end of the kernel line you want the system to boot.
Red Hat Enterprise Linux 4 Update 1 (AMD64/EM64T) supports 8 logical processors. No extra steps are required to enable these processors.
Red Hat Enterprise Linux 3 (x86) supports 16 logical processors. No extra steps are required to enable these processors.
Red Hat Enterprise Linux 3 (AMD64/EM64T) supports 8 logical processors. No extra steps are required to enable these processors. No additional logical processors will be supported in the future.
SUSE LINUX Enterprise Server 9 SP3 (x86) supports 128 logical processors. No extra steps are required to enable these processors.
SUSE LINUX Enterprise Server 9 SP2 (x86) supports 128 logical processors. To enable more than 8 logical processors, the boot parameter "apic=bigsmp" must be used. To add this boot parameter permanently, perform the following steps:
- vi /boot/grub/menu.lst
- Add the text "apic=bigsmp" at the end of the kernel line you want the system to boot.
SUSE LINUX Enterprise Server 9 SP2 (AMD64/EM64T) supports 512 logical processors. No extra steps are required to enable these processors.
SUSE LINUX Enterprise Server 9 SP1 does not support Intel dual core processors.
SUSE LINUX Enterprise Server 9 SP1 (x86) supports 128 logical processors. To enable more than 8 logical processors, the boot parameter "apic=bigsmp" must be used. To add this boot parameter permanently, perform the following steps:
- vi /boot/grub/menu.lst
- Add the text "apic=bigsmp" at the end of the kernel line you want the system to boot.
SUSE LINUX Enterprise Server 9 SP1 does not support Intel dual core processors.
SUSE LINUX Enterprise Server 9 SP1 (AMD64/EM64T) supports 512 logical processors. No extra steps are required to enable these processors.
|
Printable version
