Page 1: Table Of Contents
Compaq Computer Corporation Processor Contents Introduction......... 3 Hyper-Threading Technology ..3 Abstract: New refreshes of Compaq Evo Workstations W6000 and Advantages ....... 3 Overview ........4 W8000 will feature the leading edge Intel Xeon processor with Compaq Evo Workstations Hyper Threading technology. This new processor is fabricated with W6000 and W8000.......
Page 2: February
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 are trademarks of Microsoft Corporation in the U.S. and/or other countries.
Page 3: Introduction
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Introduction The Compaq Evo Workstations W6000 and W8000 incorporate the new leading-edge Intel Xeon Multi-processor (MP) processor and the Intel i860 chipset to achieve the next level of system performance. The purpose of this paper is to explain the impacts on processor performance with the new Intel Hyper-Threading (HT) technology enabled versus disabled in Compaq Evo Workstations W6000 and W8000.
Page 4: Overview
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper For workstation applications that use a lot of memory intensive, multi-tasked or resource bound tasks, there seems to be no apparent benefit to using Hyper-Threading technology. This will be evident from the results of some benchmarks in this paper. There seems to be more benefit running two physical processors as opposed to running a single processor with Hyper-Threading enabled.
Page 5 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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 units: A, B, and C, and only two threads: T1 and T2. In a single processor system, usually the T2 thread has to wait until the T1 thread is finished since the system can only execute one thread at a time.
Page 6 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 3 Figure 4 shows the micro-architecture block diagram of the Intel Pentium 4 processor. 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.
Page 7 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 4: In a Hyper-Threaded processor, the processor resources are shared so that each thread uses a different resource during each clock cycle. The goal is that the additional thread will fill the voids in the pipeline and take over processor resources when one thread is stalled, while waiting on a cache miss to be filled.
Page 8: Compaq Evo Workstations W6000 And W8000
Hyper-Threading technology. 2. Flash the system with the firmware version v01.15 or the latest available on the Web. IMPORTANT: If you are not familiar with the Compaq ROM-based setup, refer to Appendix A for detailed procedures.
Page 9: Hyper-Threading And Microsoft Windows Xp
Threading 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 enter the setup mode. Once the system completes Power On Self Test (POST), your system will go into setup mode.
Page 10: Hyper-Threading And Microsoft Windows 2000
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 5: Figure 6: Figure 7 shows the 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 physical CPUs that support Hyper-Threading and have Hyper-Threading enabled.
Page 11: Performance Analyses
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 8 Figure 9: Performance Analyses Applications generally need to be tuned and recompiled to gain the maximum performance with Hyper-Threading technology. Most of the benchmarks that are used to collect the performance data in this paper are horizontal and single threaded.
Page 12 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper • 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 •...
Page 13: Winstone
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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 Microsoft Windows 98 SE, Windows NT 4.0 (SP6 or later), Windows 2000, Windows Me or Windows XP.
Page 14: Pro/Engineer 2001I²
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Analysis The Winstone test results are the same as the results for SYSmark 2001. No performance loss or gain is seen with Hyper-threading enabled. See Figure 11. Winstone Benchmark on Windows XP 49.5 49.4 Business...
Page 15 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper ProE2001i2 4.61 4.69 4.27 4.18 4.11 4.26 4.09 4.21 3.96 3.81 Composite Wireframe Shaded Sub Assembly Other Score Composite Composite Composite Composite 4.09 3.81 4.69 4.21 4.26 Enable 4.11 3.96 4.61 4.27 4.18...
Page 16: Excel Benchmark
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Scores are generated for all 17 tests. Composite numbers are provided for each set of graphics tests (shaded, sub-assembly, wire-frame, and other) and there is an overall composite score for graphics and CPU operations.
Page 17: Solid Edge V10
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Excel Benchmark on Windows XP 35.00 30.00 29.78 25.00 23.05 20.00 16.68 14.17 15.00 10.00 5.00 0.00 23.05 14.17 Enable 29.78 16.68 Disable Figure 13: Solid Edge V10 SPECapc for Solid Edge V10 was developed by EDS PLM Solutions in cooperation with the SPECapc group.
Page 18: Montecarlo Benchmark
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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 important in evaluating performance using Solid Edge, so they have been given equal weightings when calculating the geometric mean.
Page 19: Verilog Compiled Simulation Benchmark
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Analysis The Montecarlo application is multi-tasked as well as computationally intensive. A task could utilize all of the processor resources, which is determined by the fact that the ratio between the physical 1P (30.1) and physical 2P (15.15) is almost 2:1.
Page 20: Summary
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper VCS Benchmark on Windows XP 6.53 Disable 6.53 Enable 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.
Page 21 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper On the down side, the existing single threaded applications do not experience the benefit of Hyper-Threading technology. In fact, there can sometimes be disruption by the alternative thread, such as the thread that uses a spin lock without pause instruction. Multi-threaded applications that are optimized for MP systems also need to consider resource contention that destroys the effectiveness of hand-tuned highly optimized code (games and streaming media applications).
Page 22: Appendix A - Enable/Disable Hyper-Threading
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Appendix A — Enable/Disable Hyper-Threading IMPORTANT: Check and verify that your system was flashed with the latest Compaq ROMPAQ version v01.15 or later, as shown in the lower left corner at the boot screen. Download the latest ROMPAQ at the Compaq website http://www.compaq.com...
Page 23 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 18: Figure 19: 3. Use the Right arrow key to select the Advanced tab. See Figure 20. 167T-0202A-WWEN...
Page 24 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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: Use the Up or Down arrow key to move the white arrow cursor to select Hyper-Threading.
Page 25 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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...
Page 26 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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...
Page 27 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 26: 11. Your system saves the configuration and is ready for reboot. See Figure 27. Figure 27: 167T-0202A-WWEN...
Page 28: Appendix B - Verify Hal Version
Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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.
Page 29 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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.
Page 30 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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 click on ACPI Uniprocessor PC and click on the Properties bar to bring up the ACPI Uniprocessor PC Properties window.
Page 31 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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...
Page 32 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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;...
Page 33 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 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: At this time, the system is ready for rebooting.
Page 34 Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper Figure 38: 167T-0202A-WWEN...
Page 35: References
[5] Alverson R., Callahan 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: Maximizing On...

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Evo workstation w8000

Compaq Evo Workstation w6000 White Paper

Introduction

Hyper-Threading Technology

Compaq Evo Workstations W6000 and W8000

Performance Analyses

Summary

Appendix A - Enable/Disable Hyper-Threading

Appendix B - Verify HAL Version

References

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