Abstract: A technique for managing undervoltage in a compute system is disclosed. The technique includes a method that further includes: detecting an AC undervoltage condition in the compute system; and upon detecting the AC undervoltage condition: dynamically determining a holdup time as a function of the present load; determining a monitoring period as a function of the dynamically determined holdup time; waiting for the determined monitoring period to expire; and upon expiration of the determined monitoring period, perform a shutdown process if the AC undervoltage condition persists.

Abstract: Systems and methods described herein allow a configurable policy for managing Power over Ethernet (PoE) to be implemented by Power Sourcing Equipments (PSEs) across a network. The policy specifies a set of rules for prioritizing power distribution over Ethernet for the computer network. When Powered Devices (PDs) are connected via Ethernet cables to the PSEs, the PDs send identification information about themselves (e.g., device type and location) to the PSEs. The PSEs assign priority levels to the PDs by electronically comparing the identification information to the set of rules. When a present level of available power is insufficient to power all the PDs via PoE, the PSEs use the priority levels to determine which PDs to power down.

Abstract: The technology described herein is directed towards optimizing power consumption of devices, e.g., in a datacenter. A modified (two-tier) genetic algorithm performs a carbon footprint-based optimization in a first tier to determine a candidate range of coefficients for each device type, e.g., servers, switches and storage devices/systems that likely reduce carbon footprint of each device type. In a second tier of the genetic algorithm, those ranges of coefficients are used in conjunction with actual power usage-based carbon footprint scores of individual devices to find respective sets of coefficients that minimize respective objective functions for the servers, the switches and the storage devices. The sets of coefficients can be used for power capping the devices. Device performance constraint-based intelligent selection can be used in one or both tiers to speed up convergence.

Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module is used to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to the load device being connected or not.

Abstract: A computing device apparatus facilitates use of a deep low power mode that includes powering off the device's CPU by including a hardware implemented process to trigger storage of data from the device's volatile storage elements in non-volatile memory in response to entering the low power mode. A hardware based power management unit controls the process including interrupting a normal processing order of the CPU and triggering the storage of the data in the non-volatile memory. In response to a wake-up event, the device is triggered to restore the data stored in the non-volatile memory to the volatile memory prior to execution of a wake up process for the CPU from the low power mode. The device includes a power storage element such as a capacitor that holds sufficient energy to complete the non-volatile data storage task prior to entering the low power mode.

Abstract: A method of adjusting core and un-core operating frequencies of two or more processors of a server includes determining core and un-core operating frequency variations versus power consumption limit variations of the two or more processors. The method also includes determining two or more first power consumption levels associated with the two or more processors. Each one of the two or more processors run at essentially a same target core operating frequency and at a same target un-core operating frequency at the respective first power consumption level of the processor. The method further includes adjusting the core and un-core operating frequencies of the two or more processors by setting a power consumption limit of each one of the two or more processors at the respective first power consumption level of the processor.

Abstract: An Information Handling System (IHS) includes multiple hardware devices, and a baseboard Management Controller (BMC) in communication with the plurality of hardware devices. The BMC includes executable instructions for identifying at least one non-registered hardware device from among the multiple hardware devices that is not registered for use within the IHS by the BMC. For this non-registered hardware device, the BMC generates power profile data. Using the power profile data of the non-registered hardware device, the BMC determines a level of electrical power to sufficiently supply the plurality of hardware devices of the IHS, and controls one or more power supply units to supply the determined level of electrical power to the plurality of hardware devices.

Abstract: An energy usage computing system includes one or more processors that are configured to receive data corresponding to energy usage of a plurality of devices within a property from a plurality of sensors. The energy usage computing system is also configured to analyze the data to determine an amount of energy used for at least one device of the plurality of devices, project an estimated cost of operation for the at least one device based at least in part on the determined amount of energy used for the at least one device, compare the estimated cost of operation for the at least one device to a threshold, and perform a cost-saving action in response to determining that the estimated cost of operation for the at least one device is above the threshold.

Abstract: A method for reducing processing power of a data processing hardware executing one or more applications is provided. The method includes receiving communication messages and identifying a first application outputting a first message based on at least one communication message. The first application is associated with a first priority value. The method includes determining a group of high-priority applications where each application has a priority value being higher than or equal to the first priority value and determining a group of low-priority applications where each application has a priority value being lower than the first priority value. The method includes discarding one or more communication messages that are not relied on by the group of high-priority applications for a predefined period of time. The method may also include sending, to the group of low-priority applications, instructions causing the one or more applications of the low-priority group to stop executing.

Abstract: A communication device for connection with a power source and a host device is provided. The communication device comprises a device controller and a converter circuit. The device controller is adapted for data communication with the host device and the converter circuit is configured to provide a virtual device ground at least to the device controller, so as to compensate a ground potential difference between the host device and the communication device.

Abstract: A method that may be used for power-over-Ethernet includes generating and sending a first pulse of a voltage signal during a classification phase, receiving a current that is responsive to the first pulse, and determining a nominal power of a powered device (PD) from the current. The method also includes generating and sending a quantity of pulses of the voltage signal subsequent to the first pulse during the classification phase, the quantity of pulses including a command to operate the PD at less than the nominal power level during an operational phase subsequent to the classification phase.

Abstract: In one embodiment, a power control block includes a power input for receiving pulse power from a power source, a power output coupled to a transmission line connector, a pulse power module operable to receive the pulse power and transmit the pulse power to the power output, a Power over Ethernet (PoE) module operable to receive the pulse power and transmit PoE to the power output, and a power controller for selecting the pulse power module to deliver the pulse power to the power output or the PoE module to deliver the PoE to the power output.

Abstract: The present disclosure provides a power allocating system, including adapters and an electronic device. Each of the adapters includes a processor. The electronic device includes a controller. The controller obtains rated information and current output information from each of the processors to calculate an output utilization rate of each of the adapters. The controller transmits at least one adjusting signal to at least one of the processors according to the output utilization rates to adjust the output utilization rate of the adapters.

Abstract: A powering patch panel system includes a patch panel device coupled to a power source, and including a first port that is coupled to a networking device via a first cable and a second port that is coupled to the powered device via a second cable. The patch panel device receives data that is directed to the powered device from the networking device through the first port and via the first cable, and receives power from the power source. The patch panel device then transmits both the data and a subset of the power through the second port and via the second cable to the powered device. The first port may be provided by optical-fiber-based port and the first cable may be provided by an optical-fiber-based cable, while the second port may be provided by a hybrid conductive-material/optical-fiber-based port and the second cable may be provided by a hybrid conductive-material/optical-fiber-based cable.

Abstract: A first communication device performs a handshaking procedure with a second communication device, the handshaking procedure associated with transitioning from an active mode to a low power mode. The first communication device transmits data and/or idle symbols to the second communication device i) after completion of the handshake procedure, and ii) at least until the earlier of a) a time period expiring, and b) determining that the second communication device quieted a transmitter of the second communication device. The first communication device transitions to the low power mode in connection with the handshaking procedure.

Abstract: A direct current (DC) power distribution system is provided. The system includes a passive splitter and an active splitter. The passive splitter includes an input port that is configured to receive a first DC power input and multiple output ports that are configured to provide a first DC power outputs to corresponding ones of multiple power only devices. The active splitter includes an input port that is configured to receive a second DC power input and network data corresponding to at least one network communications data channel and multiple output ports that are configured to provide second DC power outputs and network communications data to corresponding power and/or data devices.

Abstract: A connector controller controls a connector with a power pin, a communication pin, and a ground pin. The connector detects the voltage at the communication pin at least twice to generate first and second voltages respectively. A bus power is supplied at the power pin. The first voltage is detected when a bus current to/from the bus power is about zero. The connector controller controls the bus power in response to a difference between the first and second voltage.

Abstract: Software-defined fail-safe power draw control is provided for rack power distribution units (PDUs). A PDU power manager can be used to map devices to a PDU and its sockets. The PDU power manager can also identify the power rating of the PDU and its sockets. With this information, the PDU power manager can generate and apply priority-based and dynamic power caps to the devices connected to the PDU. In this way, the PDU power manager can ensure that the power ratings of the PDU and of each of its sockets are not exceeded while ensuring that power delivery is prioritized based on the workloads that the devices may experience.

Abstract: Controlling a vehicle comprises: providing, from an activation port, an activation signal for activating control of at least one of one or more electronically controllable devices during a high-speed activation time interval; and managing power consumed by an integrated circuit that includes two or more processor cores during the high-speed activation time interval. The managing includes: receiving the activation signal from the activation port, in response to the activation signal, executing at least a portion of stored code by a first subset of fewer than all of the processor cores at a first power level, and after the high-speed activation time interval, executing at least a portion of the stored code by a second subset of one or more of the processor cores at a second power level lower than the first power level.

Abstract: An Ethernet power supply device is provided. The Ethernet power supply device includes a first switch, a second switch, and a processor. When the first switch detects that there is no adapter power supply, the first switch generates a first power supply according to a first network power from a first Ethernet network connector port. When the second switch detects that there is no adapter power supply, the second switch generates a second power supply according to a second network power from the second Ethernet network connector port. When there is no adapter power supply and the first power supply and the second power supply are at the same power level, the processor provides a first control signal to control the first switch to provide the first power supply to a power output terminal as an output power supply.