Abstract: A power management system includes a first power grid coupled to a first circuit breaker, and a first power distribution unit coupled to the first circuit breaker. A server device includes server components, and at least one first power supply unit coupled to the first power distribution unit. A power management subsystem in the server device is coupled to the server components and the at least one first power supply unit. The power management subsystem monitors a first input current draw of each first power supply unit, and determines whether the first input current draw exceeds a first input current limit that is based on the first circuit breaker. In response the first input current draw exceeding the first input current limit, the power management subsystem throttles the server components to reduce the first input current draw below the first input current limit.

Abstract: A power management system includes a first power grid coupled to a first circuit breaker, and a first power distribution unit coupled to the first circuit breaker. A server device includes server components, and at least one first power supply unit coupled to the first power distribution unit. A power management subsystem in the server device is coupled to the server components and the at least one first power supply unit. The power management subsystem monitors a first input current draw of each first power supply unit, and determines whether the first input current draw exceeds a first input current limit that is based on the first circuit breaker. In response the first input current draw exceeding the first input current limit, the power management subsystem throttles the server components to reduce the first input current draw below the first input current limit.

Abstract: Systems and methods for performing power monitoring calibration to a target performance level are described. In some embodiments, an Information Handling System (IHS) may include a plurality of Central Processing Units (CPUs) and a logic circuit coupled to the plurality of CPUs, the logic circuit configured to: measure an operating performance level for each of the plurality of CPUs under a controlled workload and, in response to a determination that the operating performance level of any given one of the CPUs does not match a target performance level for all of the CPUs, apply an offset to a voltage regulator measurement associated with the given CPU that causes the operating performance level of the given CPU to match the target performance level for all of the CPUs.

Abstract: A system for setting a power cap state is disclosed. The system includes a plurality of power monitor sensors generating power monitor sensor data and a plurality of thermal monitor sensors generating thermal monitor sensor data. A controller has a plurality of inputs configured to receive the power monitor sensor data and the thermal monitor sensor data, to assign a priority to one of two or more power cap states and to generate a control signal. A power limiting circuit coupled to the controller is configured to receive the control signal and to modify one or more power settings.

Abstract: A computer-implemented method enables determining an input power load for a multi voltage rail subsystem in an electronic device such as an information handing system. The method comprises determining a first output power value from a first voltage regulator and a second output power value from a second voltage regulator. A first input power value to the first voltage regulator is determined based at least partially on the first output power value and a second input power value to the second voltage regulator is determined based at least partially on the second output power value. An offset power value is calculated based on the first input power value and the second input power value. A total input power value is calculated based on the offset power value and a third input power value. The total input power value is transmitted to a processor.

Abstract: Systems and methods for managing the operation of Power Supply Units (PSUs) are described. In some embodiments, a method may include: identifying a mismatch between a first Power Supply Unit (PSU) and a second PSU in an Information Handling System (IHS), disabling the first PSU, determining that a voltage at an input line of the first PSU follows a predetermined pattern while the first PSU receives a secondary bias from the second PSU, and enabling the first PSU.

Abstract: A baseboard management control subsystem may determine a fan speed value associated with a fan speed used to cool a particular hardware configuration of an information handling system. The baseboard management control subsystem may further determine a power value associated with a power consumed by a fan running at the determined fan speed value. The baseboard management system may manage power within the information handling system based on the determined fan speed value and the determined power value.

Abstract: A computer-implemented method dynamically limits peak power consumption in processing nodes of an IHS. A power management micro-controller receives processing node-level power-usage and workload data from several node controllers, including current power consumption and a current workload, for each processing node within the IHS. A total available system power of the IHS is identified including a peak power output capacity and a sustained output power capacity. At least one node peak power threshold is determined based on the power-usage and workload data for each of the processing nodes. The node controllers are triggered to determine and set a device peak power limit for each of several variable performance devices within each of the processing nodes based on the node peak power threshold, wherein each of the variable performance devices dynamically adjusts a value of a corresponding device performance metric based on the device peak power limit.

Abstract: A method that budgets power allocation for an information handling system (IHS) includes: in response to determining that the IHS is to be powered by a redundant configuration of PSUs, budgeting a first amount of power that is less than a maximum power that can be utilized by the system, and configuring the system to autonomously utilize unused operating margin of the secondary PSU(s) in a redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power; and in response to the information handling system not being powered by a redundant configuration of multiple PSUs, budgeting a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system and is within the output of the primary PSU.

Abstract: Systems and methods for managing the operation of Power Supply Units (PSUs) are described. In some embodiments, a method may include: identifying a mismatch between a first Power Supply Unit (PSU) and a second PSU in an Information Handling System (IHS), disabling the first PSU, determining that a voltage at an input line of the first PSU follows a predetermined pattern while the first PSU receives a secondary bias from the second PSU, and enabling the first PSU.

Abstract: A multi-power rail PSU includes a first power rail coupled to first PSUs, and a second power rail coupled to second PSUs. A controller subsystem receives a request to enable the first power rail and the second power rail and, in response, enables one of the first PSUs to transmit power to the first power rail, and enables one of the second PSUs to transmit power to the second power rail. The controller subsystem then performs respective PSU mismatch checks on the first PSUs and the second PSUs, and identifies compatible first PSUs for the first power rail, and compatible second PSUs for the second power rail. The controller subsystem then enables transmission of power to the first power rail from the compatible first PSUs, and enables transmission of power to the second power rail from the compatible second PSUs.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a primary persistent memory comprising a volatile memory for storing data and a non-volatile memory for receiving data transferred from the volatile memory in response to a power loss of the information handling system. The information handling system may also include an alternate persistent memory instructions embodied in non-transitory computer readable media, the instructions for causing a processor communicatively coupled to the primary persistent memory and the alternate persistent memory to, responsive to a vulnerability of a persistence of the primary persistent memory, transfer application data from the primary persistent memory to the alternate persistent memory.

Abstract: In accordance with embodiments of the present disclosure, a method may include, during boot of an information handling system, determining a first amount of energy required by the information handling system to flush a cache integral to the information handling system to memory integral to the information handling system in response to a power loss of one or more power supplies for supplying electrical energy to the information handling system, determining whether a second amount of energy available for hold-up of one or more power supplies in response to the power loss exceeds the first amount of energy, and responsive to determining whether the second amount of energy exceeds the first amount of energy, configuring the cache.

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may comprise a plurality of output terminals configured to supply electrical energy to one or more information handling resources, a measurement module configured to measure one or more parameters indicative of an intermediate impedance between the power supply unit and at least one other power supply unit, and a microcontroller unit. The microcontroller unit may be configured to estimate an intermediate impedance based on the one or more parameters and communicate the intermediate impedance to a controller of an information handling system in which the power supply unit is disposed.

Abstract: A method for allocating power within an information handling system (IHS) includes: monitoring power consumed by components within the IHS; monitoring thermal state of the components; evaluating power demand and cooling demand for each of the components; and adjusting power allocated to at least one of a computing resource and system cooling according to results of the evaluating. An information handling system (IHS) and a controller that both perform similar processes are disclosed.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a power supply unit having an input for receiving an alternating current input waveform and converting it into a direct current waveform on a bulk capacitor for storing charge and a controller configured to, based on at least one parameter of one or more information handling resources of the information handling system, determine a configurable under-voltage threshold defining a minimum direct current voltage delivered by the power supply when the alternating current input waveform is withdrawn.

Abstract: Systems and methods for enabling programmable cache size via Class of Service (COS) cache allocation are described. In some embodiments, a method may include: identifying a resource available to an Information Handling System (IHS) having a cache, where the resource is insufficient to allow the entire cache to be flushed during a power outage event; dividing a cache into at least a first portion and a second portion using a COS cache allocation, where the second portion has a size that is entirely flushable with the resource; and flushing the second portion of the cache during the power outage event.

Abstract: Systems and methods for enabling programmable cache size via Class of Service (COS) cache allocation are described. In some embodiments, a method may include: identifying a resource available to an Information Handling System (IHS) having a cache, where the resource is insufficient to allow the entire cache to be flushed during a power outage event; dividing a cache into at least a first portion and a second portion using a COS cache allocation, where the second portion has a size that is entirely flushable with the resource; and flushing the second portion of the cache during the power outage event.

Abstract: Systems and methods for performing power monitoring calibration to a target performance level are described. In some embodiments, an Information Handling System (IHS) may include a plurality of Central Processing Units (CPUs) and a logic circuit coupled to the plurality of CPUs, the logic circuit configured to: measure an operating performance level for each of the plurality of CPUs under a controlled workload and, in response to a determination that the operating performance level of any given one of the CPUs does not match a target performance level for all of the CPUs, apply an offset to a voltage regulator measurement associated with the given CPU that causes the operating performance level of the given CPU to match the target performance level for all of the CPUs.

Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a management controller communicatively coupled to the processor and configured to, during boot of the information handling system determine a first amount of energy required by the information handling system to perform a save operation to transfer data from a volatile memory to a non-volatile memory of a persistent memory in response to a loss of power for supplying electrical energy to the information handling system, determine whether a second amount of energy available for providing electrical energy for the save operation in response to the loss of power exceeds the first amount of energy, and responsive to determining whether the second amount of energy exceeds the first amount of energy, determine whether to support the persistent memory.