Other

Google Inc.

Hewlett-packard Company

Transmeta Corporation

Mark D Hennecke

Kleanthes G Koniaris

Taliver Heath

Xiaobo Fan

Stephen Michael Lee

James B Burr

Salil Pradhan

Wolf-Dietrich Weber

Selver Corhodzic

Ruslan Meshenberg

Michey N Mehta

Chris Sadler

Liuyi Zhang

Taliver Brooks Heath

The subject matter of this specification can be embodied in, among other things, a method that includes supplying power to a portion of a data center through a power distribution line. Utilization of a statistically significant sample of the computers is monitored, and an estimated individual power draw for each of the computers based on the utilization is calculated. An estimated total power draw is calculated for different times from the estimated individual power draws to generate a collection of estimated total power draw values for the different times. Actual power draw is monitored at the power distribution line and a collection of actual power draw values is generated. A function is fitted to pairs of actual power draw values and estimated power draw values, each pair comprising an actual draw value and an estimated draw value for the same time, and the function is then stored.

Accurate power allotment

Techniques for managing a power usage of a computing device include receiving a set of executable instructions to perform a task on a computer of a plurality of computers; determining whether an expected amount of power used by the computer to execute the set of executable instructions to perform the task will exceed a desired power budget; based on the determination that the expected amount of power to execute the set of executable instructions will exceed the desired power budget, modifying the set of executable instructions; and executing the modified set of executable instructions at the computer to perform the task. The computer uses an actual amount of power to execute the modified set of executable instructions, and the actual amount of power is different than the expected amount of power.

Managing data center power usage

Methods and systems for operating a semiconductor device (e.g., a microprocessor) are described. The microprocessor is initially operated at a voltage and frequency that would be within operating limits at any device temperature. Using models that relate device temperature, operating limits and power consumption with voltage and frequency, the amount of supply voltage and a new operating frequency can be selected. The models are periodically consulted thereafter to continue adjusting the supply voltage and operating frequency, so that the microprocessor is caused to operate at very close to its capacity, in particular in those instances when, for example, processor-intensive instructions are being executed.

Dynamic chip control

Method of correlating power in a data center by fitting a function to a plurality of pairs of actual power draw values and estimated power draw values determined from monitored CPU utilization of a statistical sample of computers in the data center

In a computer-implemented method, an electronic communication from a first computing machine is received and includes a power value and one or more priority values. The power value represents a request for a power allotment expected to be used during a predetermined time and the priority values represent priorities of tasks expected to be executed during the predetermined time. A score for the request is calculated using a scoring function and the received priority values as inputs to the scoring function. The score is compared to one or more other scores respectively associated with requests for power allotments from other computing machines and previously calculated using the scoring function following receipt of one or more electronic communications each including a power value and one or more priority values. A top-ranked score is identified and an electronic communication is sent to the associated computing machine granting the requested power allotment.

Power allotment distribution in a data center

Systems and methods for control of integrated circuits comprising body-biasing systems. In accordance with a first embodiment of the present invention, a desirable power condition of a computer system comprising a microprocessor is determined. Body biasing voltage information corresponding to the power condition is accessed. A voltage supply coupled to a body terminal of the microprocessor is commanded to generate a voltage corresponding to the body biasing voltage information corresponding to the power condition.

Systems and methods for control of integrated circuits comprising body biasing systems

Method and apparatus for pre-allocation of system resources to facilitate garbage collection

Growing community of inventors

Cupertino, CA, United States of America

Mark D Hennecke