Dell Products Inc.

Carlos Guillermo Henry

Hasnain Shabbir

Dinesh Kunnathur Ragupathi

Dominick Adam Lovicott

Eric Michael Tunks

Akkiah Choudary Maddukuri

Alaric J Silveira

Thanh Hung Dang

Arun Muthaiyan

Venkatesh Ramamoorthy

Alaric Joaquim Narcissius Silveira

Hung-Chun Lin

Robert Daniel Whittington

Cho Shih Huai

Danny Daniel Whittington

An information handling system includes a management controller configured to determine whether to initiate control of power consumption of a memory subsystem of the information handling system. A closed-loop memory thermal controller may receive temperature values to determine a temperature setpoint for the memory subsystem, and calculate an error value that is a difference between the temperature setpoint and a temperature measurement. If the error value is within a temperature margin, then the thermal controller may determine a proportional-integral power signal based on the temperature margin and the temperature measurement; and determine a proportional-integral gain based on a maximum rate of change of the temperature measurement between polling events of the temperature measurement and a polling rate of the temperature measurement. The thermal controller may also determine a modified proportional-integral power signal based on the proportional-integral gain, wherein the modified proportional-integral power signal is used to determine a power adjustment value of the memory subsystem; and in response to an initiation from the management controller to control the power consumption of the memory subsystem, control the power consumption of the memory subsystem based on the power adjustment value.

System and method for closed-loop memory power capping

A system for controlling one or more fans, comprising an open loop control system configured to receive a CPU power level and to maintain a fan speed at an open loop fan speed level. A closed loop control system configured to receive the CPU power level and temperature, and to modify the fan speed as a function of the CPU power level and temperature, wherein the fan speed is maintained at a level that is not lower than the open loop fan speed level.

System and method for automation of baseline fan speeds

A management controller is configured to determine a thermal resistance of a heat sink, and determine a thermal resistance curve that includes the thermal resistance. The management controller may also determine a fan speed setting corresponding with the thermal resistance, and set a speed of the fan based on the fan speed setting.

System and method for predictive fan speed control and management

Methods and systems for supporting similar thermal devices may involve collecting, by a thermal module on a management controller of an information handling system, device information about an add-in card, determining whether the add-in card was previously defined by matching the device against a table, searching the table based on the determination that the add-in card was not previously defined, determining whether the add-in card is supported by finding a match in the table, and applying a thermal tier associated with the match in the table based on the determination that the add-in card is supported. The device information collected may involve at least two of a reseller part number, description, device identifier, sub device identifier, vendor identifier, sub vendor identifier, slot identifier, lane width, and auxiliary power indicator. The search of the table may involve at least one of the description, lane width, and sub vendor identifier.

System and method for supporting similar thermal devices

Heat-rejecting media may thermally couple to a device, and the heat-rejecting media may include active heat-rejecting media configured to thermally couple to the device and thermally couple between the device and an active cooling system such that the active cooling system causes heat transferred to the active heat-rejecting media from the device to be transferred from the active heat-rejecting media and passive heat-rejecting media extending from the active heat-rejecting media and configured to thermally couple to the device and thermally couple between the device and a system-level air mover other than the active cooling system and configured to drive airflow to components of a system comprising the device such that the heat transferred to the passive heat-rejecting media from the device is transferred to the airflow driven by the system-level air mover.

Systems and methods for combined active and passive cooling of an information handling resource

An airflow characterization system includes a first airflow sensor subsystem positioned at a first location on an airflow characterization board base and a second airflow sensor subsystem positioned at a second location on the airflow characterization board base that is different than the first location. An airflow characterization controller is coupled to the first airflow sensor subsystem and the second airflow sensor subsystem. When the airflow characterization board is positioned in a circuit board slot, the airflow characterization controller receives a first airflow signal from the first airflow sensor subsystem during a first time period and receives a second airflow signal from the second airflow sensor subsystem during the first time period. The airflow characterization controller determines a circuit board slot airflow characterization for the circuit board slot based on the first airflow signal and the second airflow signal.

Airflow characterization system

When conflicting thermal parameters for thermal control exist in both of a personality module and one of a power table and a thermal table, wherein the power table comprises a plurality of entries each setting forth supported parameters for power management of one or more information handling resources, wherein the thermal table comprises a plurality of entries each setting forth parameters for thermal management of the one or more information handling resources, and wherein a personality module comprises a plurality of entries each setting forth custom parameters for system-specific power/thermal management of the one or more information handling resources, each entry of the personality module including an attribute associated with the custom parameters, a method may perform selecting one of the conflicting thermal parameters as a selected thermal parameter based on the at least one attribute; and writing an entry associated with the selected thermal parameter to final thermal.

Systems and methods for forward compatibility of custom thermal settings

Systems and methods of controlling the fan speed of one or more secondary variable speed cooling fans of an information handling system in real time by dynamically and adaptively shadowing the fan speed of another primary variable speed cooling fan or by so shadowing the fan speed of the variable cooling fan/s of a primary cooling fan zone including other variable speed primary cooling fans of the same information handling system.

Systems and methods for dynamic and adaptive cooling fan shadowing in information handling systems

An information handling system includes a first fan in a first location for cooling a first component of the information handling system, a second fan in a second location for cooling a second component of the information handling system, and a management controller. The management controller determines that the first fan has experienced greater stress than the second fan, and recommends that the first fan be placed in the second location and that the second fan be placed in the first location.

System and method for improving fan life in an information handling system

A system may include a plurality of temperature sensors configured to sense temperatures at a plurality of locations associated with an information handling system, a cooling subsystem comprising at least one cooling fan configured to generate a cooling airflow in the information handling system, and a thermal manager communicatively coupled to the plurality of temperature sensors and the cooling subsystem. The thermal manager may be configured to, based on at least a power provided to a subsystem of the information handling system, estimate a thermal condition proximate to the subsystem and set a speed of the at least one cooling fan based on the estimated thermal condition and a required cubic airflow rate associated with the subsystem, wherein the required cubic airflow rate is determined based on a required linear airflow velocity associated with the subsystem and a net cross-sectional area through which the cooling airflow travels.

Systems and methods for thermal management of an information handling system using estimates of linear airflow velocity based on cubic flow rate and airflow area

A method may include: (i) based on an error between a setpoint value and a measured process value, determining an integrated error indicative of a time-based integral of the error; (ii) based on the error, determining a differential error indicative of a time-based derivative of the error; (iii) based on the integrated error and the error, generating a proportional-integral output driving signal; (iv) based on the differential error and the error, generating a proportional-differential output driving signal; (v) determining whether the differential error is stable; (vi) responsive to determining that the differential error is stable, generating a driving signal for controlling a plant based on the proportional-differential output driving signal and independent of the proportional-integral output driving signal; (vii) responsive to determining that the differential error is unstable, generating the driving signal for controlling the plant based on the proportional-differential output driving signal and the proportional-integral output driving signal.

Systems and methods for providing controller response stability in a closed-loop system

A power supply unit includes a handle and a power cord. The handle is connected to a panel of the power supply unit via a first leg and a second leg. The handle is configured to provide a location for a user to grip while removing the power supply unit from an information handling system. The power cord includes a first end coupled to the handle, and a second end including a power socket. A first wire of the power cord extends into the power supply unit via the first leg, and a second wire of the power cord extends into the information handling system via the second leg.

Integrated power supply handle and alternating current input

In accordance with embodiments of the present disclosure, an information handling system may include a processor, one or more information handling resources communicatively coupled to the processor, and a management controller communicatively coupled to the processor. The management controller may have stored thereon at least one of a power table comprising parameters for power management of the one or more information handling resources and a thermal table comprising parameters for thermal management of the one or more information handling resources, and firmware comprising instructions executable on the management controller and configured to enable a user of the information handling system to, during runtime of the management controller, create a virtual power and thermal table capable of storing one or more entries, each entry setting forth power parameters and thermal parameters for an information handling resource.

Growing community of inventors

Round Rock, TX, United States of America

Carlos Guillermo Henry