Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F9/00—Arrangements for program control, e.g. control units
  • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
  • G06F9/44—Arrangements for executing specific programs
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/26—Power supply means, e.g. regulation thereof
  • G06F1/32—Means for saving power
  • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
  • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
  • G06F1/3228—Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/26—Power supply means, e.g. regulation thereof
  • G06F1/32—Means for saving power
  • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
  • G06F1/3234—Power saving characterised by the action undertaken
  • G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/26—Power supply means, e.g. regulation thereof
  • G06F1/32—Means for saving power
  • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
  • G06F1/3234—Power saving characterised by the action undertaken
  • G06F1/329—Power saving characterised by the action undertaken by task scheduling
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F11/00—Error detection; Error correction; Monitoring
  • G06F11/30—Monitoring
  • G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
  • G06F11/3409—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F11/00—Error detection; Error correction; Monitoring
  • G06F11/30—Monitoring
  • G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
  • G06F11/3409—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment
  • G06F11/3419—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment by assessing time
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F11/00—Error detection; Error correction; Monitoring
  • G06F11/30—Monitoring
  • G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
  • G06F11/3466—Performance evaluation by tracing or monitoring
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F9/00—Arrangements for program control, e.g. control units
  • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
  • G06F9/46—Multiprogramming arrangements
  • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
  • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
  • G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F9/00—Arrangements for program control, e.g. control units
  • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
  • G06F9/46—Multiprogramming arrangements
  • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
  • G06F9/5094—Allocation of resources, e.g. of the central processing unit [CPU] where the allocation takes into account power or heat criteria
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
  • G06F2201/865—Monitoring of software
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2209/00—Indexing scheme relating to G06F9/00
  • G06F2209/50—Indexing scheme relating to G06F9/50
  • G06F2209/501—Performance criteria
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2209/00—Indexing scheme relating to G06F9/00
  • G06F2209/50—Indexing scheme relating to G06F9/50
  • G06F2209/507—Low-level
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

• a processor clock demand rate required by each task can be determined. Based on such determinations, an aggregate clock demand rate based on the determined processor clock demand rate for all tasks can be computed. In response, the processor system clock rate can be adjusted to accommodate the aggregate clock demand rate. In some cases, the processor system clock rate can be adjusted to the aggregate clock demand rate plus an overhead demand rate.
• the processor clock demand rate can be calculated as a product of a current processor system clock rate with expected execution time for completion of the task divided by a time interval.
• the processor clock demand rate for each task can be updated based on errors affecting performance of the task and, as a result, the aggregate clock demand rate can be updated based on the updated processor clock demand rate for each task.
• a task may be referred to as a set of instruction to be executed by the processor system 10.
• the term task can be interpreted to include a group of tasks (unless otherwise stated).
• a task can also comprise processes such as instances of computer programs that are being executed, threads of execution such as one or more simultaneously, or pseudo-simultaneously, executing instances of a computer program closely sharing resources, etc. that execute within one or more processor systems 10 (e.g., microprocessors) or virtual machines such as virtual execution environments on one or more processors.
• a virtual machine (VM) is a software implementation of a machine (computer) that executes programs like a real machine.
• the tasks can be state machines such as image processors, cryptographic processors and the like.
• the management module 106 can be part of the computer system coupled to the processing module (for example, a program residing in the system memory 150).
• the management module 106 can create, and/or retrieve previously created performance profiles from system memory 150 or from storage devices such as hard disk drives, non-volatile memory, etc., and assign task performance profiles that specify task performance parameters to tasks directly or through their task context (a set of data containing the information needed to manage a particular task).
• the management module 106 can control the allocation of resources by
• the I/O subsystem module 108 can be part of the computer system coupled to the processing module (for example, a program residing in the system memory 150).
• the I/O subsystem module 108 can control, and/or enable, and/or provide the means for the communication between the processing system, and the outside world possibly a human, storage devices, or another processing system.
• Inputs are the signals or data received by the system, and outputs are the signals or data sent from it.
• Storage can be used to store information for later retrieval; examples of storage devices include hard disk drives and non-volatile semiconductor memory. Devices for communication between computer systems, such as modems and network cards, typically serve for both input and output.
• Performance profiles can be assigned to groups of tasks similar to the performance profile for an individual task.
• tasks that are members of a group share a common performance profile and the performance resource parameters can be derived from that common profile.
• a subset of the performance parameters can be part of a group performance profile while others are part of individual task performance profile.
• a task profile can include expect work parameters while the task is a member of a group that shares I/O bandwidth and cache occupancy performance parameters.
• a multiplicity of groups can exist where tasks are members of one or more groups that specify both common and separate performance profile parameters where the parameters utilized by the performance resource manager are derived from the various performance profiles (through a set of policies/rules)
• a task's demand rate can be added to the aggregate demand rate when the task becomes ready-to-run which may be determined by the scheduler module 130 (e.g., based on scheduling or other events such as becoming unblocked on I/O operations, etc.) or other subsystems such as the I/O subsystem.
• This demand rate can initially be specified by, or calculated from, the tasks performance profile and can be updated based, for example, on the task's work completion progress over time, updated through a rate adaption function as a function of progress error, and the like.
• the performance profile can contain one or more task state dependent performance parameters. In such cases, the task demand rate can be updated when these parameters change due to task state, or system state, change and can be further updated while the task is executing on the processor system through rate error adaptation (using the progress error and/or progress limit error in the computation of performance profile parameters).
• the requested rate can be adapted to be higher than the calculated aggregate demand rate to bias placing the processing system in idle state.
• the computation of the occupancy quota can be made such that that the occupancy quota can be increased when a task is below its expected work rate or the cache miss rate is above a certain threshold; conversely, the occupancy quota can be reduced when the task is exceeding its expected work or the cache miss rate is below a certain threshold.
• This computation can also take progress limiting error values into account, for example, by detecting that the progress is being limited by another factor other than occupancy.
• a multiplicity of caches and/or buffer subsystems can exist and thus there can be several occupancy quota parameters utilized and stored in the task's performance profile.
• These caches and buffers can be embodied in hardware or software (firmware) or a combination of both.

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• Theoretical Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Software Systems (AREA)
• Computer Hardware Design (AREA)
• Quality & Reliability (AREA)
• Debugging And Monitoring (AREA)
• Hardware Redundancy (AREA)
• Power Sources (AREA)

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• 2011
  • 2011-03-25 EP EP11760356.3A patent/EP2553573A4/de not_active Withdrawn
  • 2011-03-25 KR KR1020127027941A patent/KR20130081213A/ko not_active Application Discontinuation
  • 2011-03-25 CN CN2011800254093A patent/CN102906696A/zh active Pending
  • 2011-03-25 JP JP2013501534A patent/JP2013527516A/ja active Pending
  • 2011-03-25 WO PCT/US2011/030096 patent/WO2011120019A2/en active Application Filing

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