User manual SONY VAIO VPC-EA22FX/G

[. . . ] 8 Enabling/Disabling HyperThreading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Hyper-Threading and Microsoft Windows XP . . . . . . . . . . . . . . 9 Hyper-Threading and Microsoft Windows 2000 . . . . . . . . . 11 SYSmark 2001 . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Press F10, press Enter, press F10 to save changes, and Exit. The system saves your configuration and reboots. Hyper-Threading and Microsoft Windows XP If the Hyper-Threading technology option is enabled, verify that the change was made. With Hyper-Threading enabled under Microsoft Windows XP, any physical CPU will be seen by the OS as two logical CPUs. Right-click on the task bar, and select Task Manager to bring up the Windows Task Manager. Under the Performance tab, you will see four CPUs in the Task Manager if your system has two Physical CPUs and Hyper-Threading is enabled. Figure 5 shows the Task Manager of a system that has two physical Processors with HyperThreading enabled. Figure 6 shows the Task Manager of a system that has either one physical processor with Hyper-Threading enabled or a system that has two physical processors with Hyper-Threading disabled. 167T-0202A-WWEN Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 10 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. The OS does not recognize the case of one physical CPU with Hyper-threading enabled versus the case of two physical CPUs, regardless of Hyper-Threading enabled or disabled. The Task Manager in Figure 8 reflects these three cases. The first case with two logical CPUs will have less performance than the other two cases. However, the results for SPECapc for Pro/E 2000i² cannot be compared to those of previous versions of the benchmark. The model used in the benchmark is a realistic rendering of a complete photocopy machine consisting of approximately 370, 000 triangles. See Figure 12. 167T-0202A-WWEN Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper 15 ProE2001i2 5 4. 69 4. 61 4. 27 4. 18 4. 26 4. 5 4. 09 4. 11 3. 96 3. 81 4. 21 4 3. 5 3 2. 5 2 1. 5 1 0. 5 0 Lower is better Composite Score 4. 09 4. 11 Wireframe Composite 3. 81 3. 96 Shaded Composite 4. 69 4. 61 Sub Assembly Composite 4. 21 4. 27 Other Composite 4. 26 4. 18 Enable Disable Figure 12 The benchmark is comprised of 17 tests. Startup and initialization time is measured, but given no weight (0. 0) within the composite score for the benchmark. There are 16 graphics tests, each of which measures a different rendering mode or feature. The first three graphics tests measure wireframe 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 transformations to provide a direct comparison of different rendering modes. The next four tests use a sub-assembly, and compare the two FASTHLR modes, the default shading mode, and shading with edges. These tests also execute a common sequence of 3D transformations. The last five graphics tests use two different instances of the model--the first three without its outer skins (to illustrate the effect of FASTHLR and level-of-detail operations), and the last two to illustrate complex lighting modes and surface curvature display. [. . . ] See Figure 26. 167T-0202A-WWEN 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 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. Note: The procedure for Windows XP is not included here since it is similar to the Windows 2000 procedure. [. . . ]