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Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 

35 

 

167T-0202A-WWEN 

References 

[1] Introduction to Hyper-Threading Technology, Intel Document Number: 250008-002 

[2] Laudon J., Gupta A., Horowitz M. (1994) Interleaving: A Multi-threading Technique 
Targeting Multi-processors and Workstations 

[3] Smith B. J. (1985) The Architecture of HEP 

[4] Thistle M., Smith B.J. (1988) A Processor Architecture for Horizon 

[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 
Chip Parallelism 

[8] AP-949 Using Spin-loops on Intel Pentium 4 Processor and Xeon Processor 

Summary of Contents for Evo Workstation w6000

Page 1: ...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 Inte...

Page 2: ...urther or additional warranty This publication does not constitute an endorsement of the product or products that were tested The configuration or configurations tested or described may or may not be...

Page 3: ...in binary compatibility with the Intel Architecture IA known as the IA 32 Instruction set Hyper Threading Technology Intel has developed a new feature called Hyper Threading technology for the IA 32 a...

Page 4: ...order to minimize the complexity of the technology the Intel Hyper Threading technology does not attempt to simultaneously fetch decode instructions corresponding to two threads Instead the Central Pr...

Page 5: ...and dispatches the T2 thread to another CPU Hyper Threading technology can allow up to two active threads in the pipeline Since it shares the same rapid execution engine each thread will need to arbit...

Page 6: ...exception the instructions from only that thread are flushed The rapid execution engine the Scheduler Floating Point FP RF Integer RF and arithmetic logic unit ALU stages is competitively shared betwe...

Page 7: ...imized for Hyper Threading technology might also show negative or no benefit For example the interleaved thread will contend for resources and destroy the effectiveness of the tight code optimizations...

Page 8: ...00 Professional Version and dual physical processors cannot take advantage of Hyper Threading technology since the Professional version only supports up to two CPUs Only the server version of Windows...

Page 9: ...option is selected press F10 to save that option and exit that window 7 Press F10 press Enter press F10 to save changes and Exit The system saves your configuration and reboots Hyper Threading and Mi...

Page 10: ...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 p...

Page 11: ...l as the latest business usage models to reflect platform productivity performance SYSmark 2001 is a suite of application software and associated benchmark workloads developed by the Business Applicat...

Page 12: ...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 other processor is idle In this case when the Hyper Threading technol...

Page 13: ...pplications in its tests Norton Antivirus 2000 from Symantec WinZip 7 0 Microsoft FrontPage 2000 Lotus Notes R5 Microsoft Access 2000 Microsoft Excel 2000 Microsoft PowerPoint 2000 Microsoft Project 9...

Page 14: ...Disable 49 5 71 Business Content Creation Figure 11 Pro ENGINEER 2001i The Standard Performance Evaluation Corporation SPEC SPEC GPC Application Performance Characterization SPECapc project group offe...

Page 15: ...ure wire frame performance using the entire model The next four measure different aspects of shaded performance using the same model Each of these tests executes exactly the same sequence of 3D transf...

Page 16: ...nt of data A lower score indicates better system performance The Excel benchmark includes four tasks Each task will have roughly about 40MB of data Excel benchmark will run four tasks at the same time...

Page 17: ...Edge models are used for the benchmark A well head assembly with 1 320 parts A 1 3 million polygons and a 64 part hydraulic jack assembly with 66 000 polygons Solid Edge V10 measures the following fou...

Page 18: ...s tests are computation intensive and will benefit from the Hyper Threading technology The file I O test again has to share and compete for resources with the alternate threads including the OS thread...

Page 19: ...ion VCS benchmark script includes four independent 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 Analysi...

Page 20: ...ng technology to obtain performance gain some relatively simple code modifications are needed to get the optimum benefit from Hyper Threading technology To refrain from wasting resources with the idle...

Page 21: ...ion that destroys the effectiveness of hand tuned highly optimized code games and streaming media applications Hyper Threading technology can provide a performance gain of up to 30 when executing unde...

Page 22: ...nload 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...

Page 23: ...Hyper Threading Technology New Feature of Intel Xeon Processor White Paper 23 167T 0202A WWEN Figure 18 Figure 19 3 Use the Right arrow key to select the Advanced tab See Figure 20...

Page 24: ...02A WWEN 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...

Page 25: ...Feature of Intel Xeon Processor White Paper 25 167T 0202A WWEN 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 S...

Page 26: ...Intel Xeon Processor White Paper 26 167T 0202A WWEN 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...

Page 27: ...Hyper Threading Technology New Feature of Intel Xeon Processor White Paper 27 167T 0202A WWEN Figure 26 11 Your system saves the configuration and is ready for reboot See Figure 27 Figure 27...

Page 28: ...ltiprocessor 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 versio...

Page 29: ...hite Paper 29 167T 0202A WWEN 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 s...

Page 30: ...ning 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 win...

Page 31: ...ding Technology New Feature of Intel Xeon Processor White Paper 31 167T 0202A WWEN Figure 32 3 Click Next See Figure 33 Figure 33 4 Select the second option to Select a Device Driver and click Next Se...

Page 32: ...67T 0202A WWEN 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...

Page 33: ...202A WWEN 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...

Page 34: ...Hyper Threading Technology New Feature of Intel Xeon Processor White Paper 34 167T 0202A WWEN Figure 38...

Page 35: ...s 3 Smith B J 1985 The Architecture of HEP 4 Thistle M Smith B J 1988 A Processor Architecture for Horizon 5 Alverson R Callahan D Cummings D Koblenz B Porterfield A Smith J N 1990 The Tera Computer S...

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