Compaq W8000 Hyper-Threading Technology, New Feature of Intel Xeon Processor
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- Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 1
: New refreshes of Compaq Evo Workstations W6000 and W8000 will feature the leading edge Intel Xeon processor with Hyper Threading technology. This new processor is fabricated with the latest .13µ (micron) technology, 512KB-L2 cache, and the ability to support frequencies ranging from 1.8 GHz - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 2
compliance with any federal, state or local requirements. Compaq and Evo are trademarks of Compaq Information Technologies Group, L.P. in the U.S. and/or Compaq Information Technologies Group, L.P. Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper prepared by Workstations - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 3
versus disabled in Compaq Evo Workstations W6000 and W8000. The performance of the system is directly related to Instructions Per Clock (IPC). The two ways to increase system performance today are the following. • The operating system (OS) of multi-processor (MP) system configurations, such as - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 4
workstation applications that use a lot of memory power the system bus instructions corresponding to two threads. Instead, the Central Processing Unit (CPU support multiple threads application today. However, before another thread can begin, the current thread's state must be saved in the memory - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 5
Paper 5 Using Hyper-Threading technology, Instruction-Level Parallelism can boost performance from system can only execute one thread at a time. The MP system has more than one processor that the OS can use to launch TLP, so the T1 thread runs on one CPU and dispatches the T2 thread to another CPU - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 6
. A thread is initialized by the OS in the same way as in a MP system. There is no distinction in the OS between a logical processor and a true physical processor. The two active threads are interleaved at the instruction fetch and issue stages of the pipeline. (These are the first six blocks on the - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 7
Additionally, some multi-threaded applications that are not specifically optimized for HyperThreading technology might also show negative or advantage of the new 142 SSE2 new instructions. These new instructions reduce the overall number of instructions required to execute a particular program task - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 8
, including performance advantages, can be found in the Compaq white paper [6] 1527-0501A-WWEN (April 2001) Architectural Comparison of Compaq Evo Workstation W6000/W8000 with Compaq Workstation AP550/SP750. Compaq Evo Workstations systems arrive with Hyper-Threading technology disabled. This is - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 9
Compaq Workstation W6000 and Workstation W8000: 1. Reboot the system. 2. When the screen appears with the red COMPAQ logo and the F10 prompt at the bottom of the screen appears, press F10 to enter the setup mode. Once the system completes Power Windows XP, any physical CPU will be seen by the - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 10
of two processors. The OS can only recognize two CPUs, even-though the system has two physical CPUs that support Hyper-Threading and have Hyper-Threading enabled. The OS does not recognize the case of one physical CPU with Hyper-threading enabled versus the case of two physical CPUs, regardless of - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 11
, independent testing labs, PC hardware manufacturers, semiconductor manufacturers, and software publishers. SYSmark 2001 is a tool that measures system performance on popular business-oriented applications in using the Microsoft Windows operating environment. SYSmark 2001 contains fourteen - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 12
since the application thread now is shared and competing with the OS threads for the same processor resources. That does not happen with a true multiprocessor system since each of the processors has its own resources. See Figure 10. SYSmark 2001 on Windows XP 250 200 200 188 222 212 180 167 - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 13
• Microsoft PowerPoint 2000 • Microsoft Project 98 • Microsoft Word 2000 • Netscape Communicator 4.73 Content Creation Winstone 2001 Content Creation Winstone is a system-level, application-based benchmark that measures a PC's overall performance when it is running under a 32-bit OS, such as Windows - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 14
69 71 Figure 11 Pro/ENGINEER 2001i² The Standard Performance Evaluation Corporation (SPEC) SPEC/GPC Application Performance Characterization (SPECapc) project group offers performance results and free downloads for a benchmark based on Pro/ENGINEER 2000i² (ProE 2000i²). However, the results - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 15
and surface curvature display. The last test is an aggregate of all time not accounted for by the previous 16 tests, and is a mix of CPU and graphics operations. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 16
an overall composite score for graphics and CPU operations. Start-up and initiation time workstation's network must be configured as documented in the Pro/ installation guide memory latency that forces the execution unit to use the X86 instruction The result is that the system has twice as large a - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 17
represents typical user operations that are valuable in evaluating the performance of systems running Solid Edge. The new benchmark runs on Microsoft Windows NT All active-a combination of active, inactive, and hidden parts o CPU-exercises real-time VHL representation and re-computing an assembly • - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 18
so they have been given equal weightings when calculating the geometric mean. Analysis From this benchmark, the results show that the SolidEdge V10 CPU and graphics tests are computation intensive and will benefit from the Hyper-Threading technology. The file I/O test again has to share and compete - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 19
tasks that run at the same time. Each task simulates the same reset sequence of a memory controller. The VCS benchmark is very memory intensive. Analysis This VCS application is multi-tasked as well as memory intensive. A task requires about 20MB of data for simulation. The data cache is shared - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 20
of processors (instruction-level parallelism) that is targeted for servers and high-performance workstations. One of the principal benefits of Hyper-Threading technology is that it enables the processor to use on-die resources that may otherwise be idle. Although existing operating system and - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 21
uses a spin lock without pause instruction. Multi-threaded applications that are optimized for MP systems also need to consider resource contention processor without Hyper-Threading technology. For workstation applications that are more multi-tasked and more memory intensive, there is more benefit to - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 22
left corner at the boot screen. Download the latest ROMPAQ at the Compaq website http://www.compaq.com To enable or disable the Hyper-Threading technology on the Compaq Evo Workstations W6000 and W8000, follow these steps: Figure 17: 1. When you power-up the system, you see the screen shown in - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 23
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 23 Figure 18: Figure 19: 3. Use the Right arrow key to select the Advanced tab. See Figure 20. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 24
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 24 Figure 20: 4. Use either the Up or Down arrow key to select Device Options. See Figure 20. 5. Press the Enter key to open the Device Options setting window. See Figure 21. Figure 21: 6. Use the Up or Down arrow key to - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 25
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 25 Figure 22: 7. Use the Left or Right arrow key to toggle between Enable or Disable Hyper-Threading, depending on the option that you choose. See Figures 23 and 24. Figure 23: 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 26
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 26 Figure 24: 8. Press F10 to close the Device Options window. 9. Press F10 to select Save Changes and Exit. See Figure 25. Figure 25: 10. Press Enter to save any changes. Press F10 again. See Figure 26. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 27
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 27 Figure 26: 11. Your system saves the configuration and is ready for reboot. See Figure 27. Figure 27: 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 28
describe how to verify which version of the HAL has been installed on your system and how to switch to 'ACPI Multiprocessor PC' HAL. The procedure is to verify which version of the HAL has been installed on your system: 1. At the Desktop screen, right click on My Computer and move the mouse to the - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 29
the Device Manager window. See Figure 30. Figure 30: 4. Double click on the Computer Icon. If you see "ACPI Multiprocessor PC" is installed, then the system is ready. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 30
30 Note: You could stop by closing all open windows and returning to the Desktop. If you see "ACPI Uniprocessor PC," then follow this procedure: 1. Right 2. Click on the Driver tab and select Update Driver button to bring up the Upgrade Device Driver Wizard window. See Figure 32. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 31
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 31 Figure 32: 3. Click Next. See Figure 33. Figure 33: 4. Select the second option to Select a Device Driver and click Next. See Figure 34. 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 32
of Intel Xeon Processor White Paper 32 Figure 34: 5. Highlight ACPI Multiprocessor PC and click Next. See Figure 35. Figure 35: 3. The Upgrade Device Driver Wizard window prompts you that the new device is ready to install; in this case, it is the ACPI Multiprocessor PC kernel. Click the Next - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 33
Xeon Processor White Paper 33 4. Click Finish to close the Upgrade Device Driver Wizard window. See Figure 36. Figure 36: 5. To close the ACPI Multiprocessor PC Properties window, click Close. See Figure 37. Figure 37: 6. At this time, the system is ready for rebooting. Click Yes to restart the - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 34
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 34 Figure 38: 167T-0202A-WWEN - Compaq W8000 | Hyper-Threading Technology, New Feature of Intel Xeon Processor - Page 35
D., Cummings D., Koblenz B., Porterfield A., Smith J.N. (1990) The Tera Computer System [6] -0501A-WWEN (April 2001) Architectural Comparison of Compaq Evo Workstation W6000/W8000 with Compaq Workstation AP550/SP750 [7] Tullsen D.M., Eggers S.J., Levy H.M. (1995) Simultaneous Multi-threading
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White Paper
February 2002
167T-0202A-WWEN
Prepared by:
Workstations Division
Compaq Computer Corporation
Contents
Introduction
.................................
3
Hyper-Threading Technology
....
3
Advantages
...............................
3
Overview
...................................
4
Compaq Evo Workstations
W6000 and W8000
.......................
8
Enabling/Disabling Hyper-
Threading
..................................
8
Hyper-Threading and
Microsoft Windows XP
..............
9
Hyper-Threading and
Microsoft Windows 2000
.........
10
Performance Analyses
.............
11
SYSmark 2001
........................
11
Winstone
.................................
13
Pro/ENGINEER 2001i²
............
14
Excel Benchmark
....................
16
Solid Edge V10
.......................
17
Montecarlo Benchmark
...........
18
Verilog Compiled Simulation
Benchmark
..............................
19
Summary
...................................
20
Appendix A —
Enable/Disable Hyper-
Threading
..................................
22
Appendix B — Verify HAL
Version
......................................
28
References
................................
35
Hyper-Threading Technology,
New Feature of Intel Xeon
Processor
Abstract:
New refreshes of Compaq Evo Workstations W6000 and
W8000 will feature the leading edge Intel Xeon processor with
Hyper Threading technology. This new processor is fabricated with
the latest .13μ
(micron)
technology, 512KB-L2 cache, and the ability
to support frequencies ranging from 1.8 GHz to greater than 2.6
GHz. This processor also includes support for multi-threaded
execution, known as Hyper-Threading technology.
The purpose of this paper is to provide an overview of Hyper-
Threading technology, to analyze and study the performance impacts
of the system with Hyper-Threading technology, enabled as well as
disabled, and to provide the technical information and benefits of
this feature.