Optional Second Microprocessor - HP Kayak XU Technical Reference Manual

1.
Configuring Setup for
Multi-Processing
NOTE
2 System Board
Devices on the Processor-Local Bus

Optional Second Microprocessor

The HP Kayak XU PC Workstation has dual processing capability.
However, not all operating systems support a second processor, and of those
that do, not all result in an increase in system performance. Installing a
second processor is only advantageous when the software can make use of
parallel activity. In particular, you need to be running a multi-threaded
operating system that supports multiprocessing (one that is MPS-ready),
such as Windows NT. The Windows NT operating system makes best use of
the Pentium II's 32-bit architecture (though other operating systems will
also show some benefit if 32-bit application programs are run). The
following table summarizes the supported operating systems:
Multi-threaded
MPS-ready
32-bit operating system
32-bit applications available
32-bit operation at the outermost levels, but only 16-bit working internally
The two processors must be operating at the same processor speed. Both
processors must either, support the processor internal ECC functionality, or
not.
The HP Kayak XU PC Workstation supports Symmetric Multi-Processing
(SMP). When adding a second processor, it must be made sure that: (a) the
choice "multi-processing" has been made in the system Setup; (b) the
operating system supports multi processors.
In the case of Windows NT, it might be necessary to perform an upgrade
from the MPS uniprocessor to the MPS multi-processor version.
The system Setup allows to choose between "mono or multi-processing"
operations. The "mono-processing" mode has been implemented in order to
support operating systems that rely on the "legacy" interrupt controller
82C59 and are not aware of I/O APIC controller 820093AA operation. Refer
to page 57 for further details.
18
Windows NT 4.0
Windows 95
(or greater)
Yes
Yes
Yes Partial
Yes
Yes
No
1
Yes