HP Evo Workstation w8000 Hyper-Threading Technology, New Feature of Intel Xeon
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- HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 1
of Intel Xeon Processor Abstract: New refreshes of Compaq Evo Workstations W6000 and W8000 will feature the leading edge Intel Xeon processor , 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 3
enabled versus disabled in Compaq Evo Workstations W6000 and W8000. The performance of the system is directly related to Instructions Per Clock (IPC). system performance • Increased number of users that a platform can support (server applications) • Improved reaction and response time because tasks - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 4
For workstation applications that use a lot of memory to simultaneously fetch/decode instructions corresponding to two addressing the problem of poor execution support multiple threads application today. However, before another thread can begin, the current thread's state must be saved in the memory - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 5
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 5 Using Hyper-Threading technology, Instruction-Level Parallelism can boost performance from a processor by utilizing otherwise idle resources. (See Figure 3.) For simplicity, assume that there are only three Executing - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 6
threads are simultaneously dispatched for execution by the processor core. The processor core executes these two threads concurrently, using out-of-order instruction scheduling to keep as many of its execution units as busy as possible during each clock cycle. Reorder/retire stage again alternates - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 8
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 is possible that the CPU in the system does not have support for Hyper-Threading technology. 2. Flash the system with the - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 9
the preliminary steps, follow these steps to enable or disable the HyperThreading technology on the 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 10
a system that has only one processor with Hyper-Threading disabled. Figure 7: Hyper-Threading and Microsoft Windows 2000 Microsoft Windows 2000 Professional Edition only supports up to a maximum of two processors. The OS can only recognize two CPUs, even-though the system has two physical CPUs that - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 11
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 11 . Figure 8 Figure 9: Performance Analyses Applications generally need to be tuned and recompiled2 to gain the maximum performance with Hyper-Threading technology. Most of the benchmarks that are used to collect the - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 12
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 12 • Microsoft Outlook 2000 • Microsoft PowerPoint 2000 • Microsoft Word 2000 • Netscape Communicator 6.0 • WinZip 8.0 Internet Content Creation: • Adobe Photoshop 6.0 • Adobe Premiere 6.0 • Macromedia Dreamweaver 4 • - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 13
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 13 Winstone Business Winstone 2001 Business Winstone 2001 is a system-level, application-based benchmark that measures the overall performance of a PC when running today's top-selling Windows-based 32-bit applications on - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 14
Business 49.4 49.5 71 69 Content Creation 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 2000i - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 15
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 15 5 4.5 4.11 4.09 4 3.5 ProE2001i2 3.96 3.81 4.61 4.69 4.27 4.21 4.18 4.26 Lower is better 3 2.5 2 1.5 1 0.5 0 Enable Disable Composite Score 4.09 4.11 Wireframe Composite 3.81 3.96 Shaded Composite 4.69 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 16
a floating license is used, the workstation's network must be configured as documented in the Pro/ installation guide. Analysis ProE 2002i2 is not a . A trace cache miss results in a memory latency that forces the execution unit to use the X86 instruction deFRGHU LQVWHDG RI WKH RSV PLFUR-operation - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 17
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 17 Excel Benchmark on Windows XP 35.00 30.00 29.78 Lower is better 25.00 20.00 15.00 23.05 16.68 14.17 10.00 5.00 0.00 Enable Disable 1P 23.05 29.78 2P 14.17 16.68 Figure 13: Solid Edge V10 SPECapc for Solid - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 18
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 18 o In-place assembly activation o In-place part activation o Modification of a model o Update of all the files due to the model change Note: EDS PLM Solutions consider all four portions of the benchmark to be equally - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 20
7.2 Figure 16 Summary Hyper-Threading technology represents a new approach to improving the instruction throughput 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 21
, such as the thread that uses a spin lock without pause instruction. Multi-threaded applications that are optimized for MP systems also need 32 processor without Hyper-Threading technology. For workstation applications that are more multi-tasked and more memory intensive, there is more benefit to - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 22
in the lower 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 28
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 28 Appendix B - Verify HAL Version This section will 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 for Windows 2000. - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 29
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 29 Figure 29: 3. Click on the Hardware tab and Device Manager button to bring up the Device Manager window. See Figure 30. Figure 30: 4. Double click on the Computer Icon. If you see "ACPI Multiprocessor PC" is installed, - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 30
the ACPI Uniprocessor PC Properties window. See Figure 31. Figure 31: 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 32
, New Feature 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 33
Hyper-Threading Technology, New Feature of Intel 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 - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 34
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 34 Figure 38: 167T-0202A-WWEN - HP Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel Xeon - Page 35
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: Maximizing On Chip Parallelism
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.