IBM 440 manual Description Release SMP support1 Hyper-Threading Support

additional logical processors and spawning multiple threads, which can exploit the additional processing power.

As well as considering whether the operating system you are installing supports Hyper-Threading, there may be licensing implications to consider before enabling Hyper-Threading technology.

For a more detailed discussion on Hyper-Threading technology, refer to:

http://www.intel.com/eBusiness/products/server/processor/xeon/wp020901_sum.htm

Table 3-2 lists the supported operating systems for the x440 and the level of support for Hyper-Threading technology provided by the operating system.

In the column titled Hyper-Threading Support:

￿None indicates the operating system does not recognize the logical processors that Hyper-Threading enables.

￿Yes indicates that the operating system recognizes the logical processors and can execute threads on them but is not optimized for Hyper-Threading.

￿Optimized indicates that the operating system recognizes the logical processors and the operating system code has been designed to fully take advantage of the technology.

Table 3-2 x440 operating system support

Description	Release	SMP support1	Hyper-Threading
			support
Windows 2000 Server	SP2/3	Supports up to four-way	Yes
Windows 2000 Advanced Server	SP2/3	Supports up to eight-way	Yes
Windows 2000 Datacenter Server	SP3	Supports up to 32-way 2	Yes
Windows NT Enterprise Edition	4.0	Only supports four-way on the x440	None
		Hot-plug PCI not supported
Windows .NET Server	1Q/03	Supports up to two-way	Optimized
Windows .NET Enterprise Server	1Q/03	Supports up to eight-way	Optimized
Windows .NET Datacenter Server	1Q/03	Supports up to 32-way 2	Optimized
NetWare	6.0	Supports up to 32-way 2, 3	Yes
Red Hat Linux Advanced Server	2.1	Supports up to eight-way 4	Yes
SuSE Linux Enterprise	8.0	Supports up to eight-way 4	Yes

Chapter 3. Planning 91