Compaq Evo Workstation w8000 Hyper-Threading Technology, New Feature of Intel
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- Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 1
Introduction 3 Hyper-Threading Technology .... 3 Advantages 3 Overview 4 Compaq Evo Workstations W6000 and W8000 8 Enabling/Disabling HyperThreading 8 Hyper-Threading and Microsoft Windows XP 9 Hyper-Threading and Microsoft Windows 2000 ......... 10 Performance Analyses 11 SYSmark 2001 11 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 2
. Compaq and Evo are trademarks of Compaq Information Technologies Group, L.P. in the U.S. and/or other countries. Microsoft, Windows, and Windows NT Compaq Information Technologies Group, L.P. Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper prepared by Workstations - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 3
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 Microsoft Windows support - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 9
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 Right-click on the task bar, and select Task Manager to bring up the Windows Task Manager. 3. Under the Performance tab, you will see four CPUs in the - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 10
Task Manager on 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 11
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 application workloads that are divided into the following two categories: Office Productivity - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 12
Encoder 7 Analysis SYSmark 2001 is a horizontal benchmark and runs only one application at a time. Therefore only the application thread is running for any given window time. To run the same benchmark on the true MP system does not yield any performance gain or degradation since most of the time the - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 13
benchmark that measures the overall performance of a PC when running today's top-selling Windows-based 32-bit applications on Microsoft Windows 98 SE, Windows NT 4.0 (SP6 or later), Windows 2000, Windows Me or Windows XP. Business Winstone 2001 does not mimic what these packages do. It runs real - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 14
gain is seen with Hyper-threading enabled. See Figure 11. Winstone Benchmark on Windows XP Higher is better 80 70 60 50 40 30 20 10 0 Enable Pro/ENGINEER 2001i² The Standard Performance Evaluation Corporation (SPEC) SPEC/GPC Application Performance Characterization (SPECapc) project group - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 16
, the workstation's network must be configured as documented in the Pro/ installation guide. Analysis results in a memory latency that forces the execution unit to use the X86 instruction deFRGHU LQVWHDG ascending and descending order. The fourth Excel window sorts the amount of data in ascending and - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 17
typical user operations that are valuable in evaluating the performance of systems running Solid Edge. The new benchmark runs on Microsoft Windows NT and Windows 2000. Two Solid Edge models are used for the benchmark: • A well-head assembly with 1,320 parts • A 1.3-million polygons and a 64-part - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 18
threads, including the OS threads that require file I/O operations and thus performs poorly. See Figure 14. SolidEdge V10 Benchmark on Windows XP 5 4.5 4.68 4 Lower is better 3.5 3.14 3 2.5 2.16 2 1.82 1.5 1 1.92 1.64 1.381.32 0.5 0 Enable Disable Overall 1.82 2.16 CPU 1.64 1.92 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 19
benchmark is resource bound. See Figure 15. Lower is better Montecarlo Benchmark on Windows XP 35.00 30.00 25.00 20.00 15.00 10.00 5. 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 24
: 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 move the white arrow cursor to select Hyper-Threading. See Figure 22 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 28
installed on your system and how to switch to 'ACPI Multiprocessor PC' HAL. The procedure is for Windows 2000. Note: The procedure for Windows XP is not included here since it is similar to the Windows 2000 procedure. Follow these steps to verify which version of the HAL has been installed on your - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 29
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, then the system is ready. 167T - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 30
: 1. Right click on ACPI Uniprocessor PC and click on the Properties bar to bring up 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 - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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 Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 33
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 this time, the system is ready for - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - Page 34
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 34 Figure 38: 167T-0202A-WWEN - Compaq Evo Workstation w8000 | Hyper-Threading Technology, New Feature of Intel - 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.