公开(公告)号：US09829967B2

公开(公告)日：2017-11-28

申请号：US14879040

申请日：2015-10-08

Applicant: NVIDIA CORPORATION

Inventor： Sam Duell ,  Jonah Alben ,  Andrew R. Bell ,  Ming Chen ,  Gabriele Gorla ,  Qi Lin ,  Henry Pang ,  Gokul Santhirakumaran

IPC: G06F1/32 ,  G06F1/26

CPC classification number: G06F1/3296 ,  G06F1/26 ,  G06F1/3206 ,  G06F1/324 ,  Y02D10/126 ,  Y02D10/172

Abstract: A power subsystem is configured to manage the maximum power usage of a computer subsystem. A power detector determines when power usage approaches the maximum capability of the power supply. The power detector generates a signal that corresponds to power usage. A controller then applies the signal to the system voltage regulator as a secondary regulation function such that the output voltage is reduced in a manner that supports maximum operating voltage while limiting power usage to within the capability of the power supply. The controller may configure the signal to implement the secondary regulation function as a modification of the feedback voltage, the reference voltage, or the current feedback of the regulator. As a result the subsystem causes the computer subsystem to operate at an optimum point on the voltage-current curve of the power supply.

公开(公告)号：US20140132612A1

公开(公告)日：2014-05-15

申请号：US13866996

申请日：2013-04-19

Applicant: NVIDIA Corporation

Inventor： Hans Wolfgang Schulze ,  Ryan Speiser ,  Erik Zuroski ,  Sam Duell ,  Jim Van Veghel

IPC: G06T1/20

CPC classification number: G09G5/363 ,  G09G2330/026 ,  G09G2360/06 ,  G09G2370/22

Abstract: Techniques for selecting a boot display device in the multi-GPU configured computing device include a graphic initialization routine for determining a topology of a plurality of GPUs. It is then determined if a display is coupled to any of the plurality of GPUs. The determination of whether the display is coupled to a GPU is communicated to the other of the plurality of GPUs based upon the determined topology. Thereafter, selection of a given GPU as a primary boot device, by a system initialization routine, is influenced by representing each GPU not coupled to the display as a graphics device and the GPUs coupled to a given display as the primary boot device if one or more displays are coupled to GPUs, and by representing the given GPU as the primary boot device and all other GPUs as graphics devices when the display is not coupled to any of the GPUs. In addition or in the alternative selection of the given GPU as the primary boot device may be influenced by hiding the expansion ROM of GPUs not coupled to a display.

Abstract translation: 用于在多GPU配置的计算设备中选择引导显示设备的技术包括用于确定多个GPU的拓扑的图形初始化例程。 然后确定显示器是否耦合到多个GPU中的任何一个。 基于确定的拓扑，将显示器耦合到GPU的确定被传送到多个GPU中的另一个。 此后，通过系统初始化程序来选择给定的GPU作为主引导设备受到影响，即将未耦合到显示器的每个GPU表示为图形设备，并且将耦合到给定显示器的GPU作为主引导设备，如果其中一个或 更多的显示器耦合到GPU，并且当显示器未耦合到任何GPU时，通过将给定的GPU表示为主引导设备和所有其他GPU作为图形设备。 另外或在给定GPU的替代选择中，主引导设备可能受到隐藏未耦合到显示器的GPU的扩展ROM的影响。