Abstract: One embodiment of the present invention sets forth a system and method for implementing a scalable link interface (SLI) approval policy using a database. The resource manager within a GPU driver incorporates a database, which may be used to determine whether the current computer system configuration is approved for running in SLI mode. The database of specific approved configurations may be embedded within the GPU driver or stored in a separate file, which may be modified by an authorized user. The database may be encrypted to prevent unauthorized users from modifying to the database contents. When a given computer system configuration is an approved configuration within the database, the system may be enabled to operate in SLI mode.

Abstract: A system, method, and computer program product are provided for communicating sub-device state information. In use, a plurality of sub-devices of a device is exposed to an application, utilizing a driver. A request may then be received from the application for state information associated with at least one of the sub-devices. In response to the request, the state information is provided to the application.

Abstract: Coherence of displayed images is provided for a graphics processing systems having multiple processors operating to render different portions of a current image in parallel. As each processor completes rendering of its portion of the current image, it generates a local ready event, then pauses its rendering operations. A synchronizing agent detects the local ready event and generates a global ready event after all of the graphics processors have generated local ready events. The global ready signal is transmitted to each graphics processor, which responds by resuming its rendering activity.

Abstract: A system and method for modifying the configuration of one or more graphics adapters and one or more displays without rebooting the system allows a user to quickly transition between different graphics adapter/display configurations. A single display driver interfaces between the operating system and the one or more graphics devices. The display driver reconfigures the one or more graphics devices to change the adapter/display configuration without shutting down or rebooting the system. Unlike a conventional system reboot performed by the operating system, the display driver checks that there are no memory leaks or error conditions during the reconfiguration.

Abstract: Coherence of displayed images is provided for a graphics processing systems having multiple processors operating to render different portions of a current image in parallel. As each processor completes rendering of its portion of the current image, it generates a local ready event, then pauses its rendering operations. A synchronizing agent detects the local ready event and generates a global ready event after all of the graphics processors have generated local ready events. The global ready signal is transmitted to each graphics processor, which responds by resuming its rendering activity.

Abstract: A driver program for a multiprocessor subsystem includes an interrupt servicing routine (ISR) and a deferred procedure call (DPC). The ISR, invoked in response to an interrupt, determines whether any of the co-processors in the multiprocessor subsystem generated an interrupt. If one of the co-processors generated an interrupt, the ISR schedules the DPC for execution and disables sending of further interrupts from all of the co-processors. The DPC services pending interrupts from any of co-processors, then re-enables sending of interrupts from the co-processors.

Abstract: A system, method, and computer program product are provided for communicating sub-device state information. In use, a plurality of sub-devices of a device is exposed to an application, utilizing a driver. A request may then be received from the application for state information associated with at least one of the sub-devices. In response to the request, the state information is provided to the application.

Abstract: A system and method for modifying the configuration of one or more graphics adapters and one or more displays without rebooting the system allows a user to quickly transition between different graphics adapter/display configurations. A single display driver interfaces between the operating system and the one or more graphics devices. The display driver reconfigures the one or more graphics devices to change the adapter/display configuration without shutting down or rebooting the system. Unlike a conventional system reboot performed by the operating system, the display driver checks that there are no memory leaks or error conditions during the reconfiguration.

Abstract: Systems and methods for providing on-demand memory management. In response to a mapping request from a device driver or other program, a first portion of the memory is mapped to one or more virtual addresses in a first region of a virtual memory space so that it can be directly accessed by the CPU. In response to an unmapping request the first portion of the memory is unmapped. Mapping and unmapping requests may be made at any time.