|
Nvidia Optimus is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware. A typical platform includes both a lower-performance integrated unit by Intel and a high-performance one by Nvidia. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. The technology mainly targets mobile PCs such as notebooks.〔http://www.nvidia.com/object/optimus_technology.html〕 When the GPU power is off, the driver redirects graphics commands to the integrated graphics chip. The switching is designed to be completely seamless and to happen "behind the scenes". Of operating systems, Windows and Linux are officially supported by Nvidia. A project called Bumblebee〔(Bumblebee )〕 brings open source support of Optimus to Linux.〔("Bumblebee version 3.0 'Tumbleweed'" release" ), ', January 20, 2012, accessed January 20, 2012.〕 == Operation == When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable. Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU. By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types: * DX Calls: Any 3D game engine or DirectX application will trigger these calls * DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration) * CUDA Calls: CUDA applications will trigger these calls Predefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel. Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「'''Nvidia Optimus''' is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware.A typical platform includes both a lower-performance integrated unit by Intel and a high-performance one by Nvidia. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. The technology mainly targets mobile PCs such as notebooks.http://www.nvidia.com/object/optimus_technology.html When the GPU power is off, the driver redirects graphics commands to the integrated graphics chip. The switching is designed to be completely seamless and to happen "behind the scenes".Of operating systems, Windows and Linux are officially supported by Nvidia. A project called Bumblebee(Bumblebee ) brings open source support of Optimus to Linux.("Bumblebee version 3.0 'Tumbleweed'" release" ), '''', January 20, 2012, accessed January 20, 2012.== Operation ==When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable.Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU.By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types:* DX Calls: Any 3D game engine or DirectX application will trigger these calls* DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration)* CUDA Calls: CUDA applications will trigger these callsPredefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel.Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP.」の詳細全文を読む Nvidia Optimus is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware. A typical platform includes both a lower-performance integrated unit by Intel and a high-performance one by Nvidia. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. The technology mainly targets mobile PCs such as notebooks.〔http://www.nvidia.com/object/optimus_technology.html〕 When the GPU power is off, the driver redirects graphics commands to the integrated graphics chip. The switching is designed to be completely seamless and to happen "behind the scenes". Of operating systems, Windows and Linux are officially supported by Nvidia. A project called Bumblebee〔(Bumblebee )〕 brings open source support of Optimus to Linux.〔("Bumblebee version 3.0 'Tumbleweed'" release" ), ', January 20, 2012, accessed January 20, 2012.〕 == Operation == When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable. Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU. By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types: * DX Calls: Any 3D game engine or DirectX application will trigger these calls * DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration) * CUDA Calls: CUDA applications will trigger these calls Predefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel. Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP. 抄文引用元・出典: フリー百科事典『 ', January 20, 2012, accessed January 20, 2012.== Operation ==When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable.Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU.By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types:* DX Calls: Any 3D game engine or DirectX application will trigger these calls* DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration)* CUDA Calls: CUDA applications will trigger these callsPredefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel.Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP.">ウィキペディア（Wikipedia）』 ■ウィキペディアで「'''Nvidia Optimus''' is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware.A typical platform includes both a lower-performance integrated unit by Intel and a high-performance one by Nvidia. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. The technology mainly targets mobile PCs such as notebooks.http://www.nvidia.com/object/optimus_technology.html When the GPU power is off, the driver redirects graphics commands to the integrated graphics chip. The switching is designed to be completely seamless and to happen "behind the scenes".Of operating systems, Windows and Linux are officially supported by Nvidia. A project called Bumblebee(Bumblebee ) brings open source support of Optimus to Linux.("Bumblebee version 3.0 'Tumbleweed'" release" ), '''', January 20, 2012, accessed January 20, 2012.== Operation ==When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable.Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU.By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types:* DX Calls: Any 3D game engine or DirectX application will trigger these calls* DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration)* CUDA Calls: CUDA applications will trigger these callsPredefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel.Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP.」の詳細全文を読む ■', January 20, 2012, accessed January 20, 2012.== Operation ==When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable.Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU.By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types:* DX Calls: Any 3D game engine or DirectX application will trigger these calls* DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration)* CUDA Calls: CUDA applications will trigger these callsPredefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel.Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP.">ウィキペディアで「'''Nvidia Optimus''' is a computer GPU switching technology created by Nvidia which, depending on the resource load generated by client software applications, will seamlessly switch between two graphics adapters within a computer system in order to provide either maximum performance or minimum power draw from the system's graphics rendering hardware.A typical platform includes both a lower-performance integrated unit by Intel and a high-performance one by Nvidia. Optimus saves battery life by automatically switching the power of the discrete graphics processing unit (GPU) off when it is not needed and switching it on when needed again. The technology mainly targets mobile PCs such as notebooks.http://www.nvidia.com/object/optimus_technology.html When the GPU power is off, the driver redirects graphics commands to the integrated graphics chip. The switching is designed to be completely seamless and to happen "behind the scenes".Of operating systems, Windows and Linux are officially supported by Nvidia. A project called Bumblebee(Bumblebee ) brings open source support of Optimus to Linux.("Bumblebee version 3.0 'Tumbleweed'" release" ), '''', January 20, 2012, accessed January 20, 2012.== Operation ==When a user launches an application, the graphics driver tries to determine whether the application would benefit from the discrete GPU. If so, the GPU is powered up from an idle state and is passed all rendering calls. Even in this case, though, the integrated graphics processor (IGP) is used to output the final image. When less demanding applications are used, the IGP takes sole control, allowing for longer battery life and less fan noise. Under MS-Windows the nVidia driver also provides the option to manually select the GPU in the right-click menu upon launching an executable.Within the hardware interface layer of the NVIDIA GPU driver, the Optimus Routing Layer provides intelligent graphics management. The Optimus Routing Layer also includes a kernel-level library for recognizing and managing specific classes and objects associated with different graphics devices. This NVIDIA innovation performs state and context management, allocating architectural resources as needed for each driver client (i.e., application). In this context-management scheme, each application is not aware of other applications concurrently using the GPU.By recognizing designated classes, the Optimus Routing Layer can help determine when the GPU can be utilized to improve rendering performance. Specifically, it sends a signal to power-on the GPU when it finds any of the following three call types:* DX Calls: Any 3D game engine or DirectX application will trigger these calls* DXVA Calls: Video playback will trigger these calls (DXVA = DirectX Video Acceleration)* CUDA Calls: CUDA applications will trigger these callsPredefined profiles also assist in determining whether extra graphics power is needed. These can be managed using the NVIDIA Control Panel.Optimus avoids usage of a hardware multiplexer and prevents glitches associated with changing the display driver from IGP to GPU by transferring the display surface from the GPU frame buffer over the PCI Express bus to the main memory-based framebuffer used by the IGP. The Optimus Copy Engine is a new alternative to traditional DMA transfers between the GPU framebuffer memory and main memory used by the IGP.」の詳細全文を読む スポンサード リンク
|