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Multi-cpu system and multi-cpu system adjustment method

An adjustment method and data processing technology, applied in the direction of multi-program device, program control design, climate sustainability, etc., can solve the problem of poor operating efficiency of CPU resources and achieve the effect of suppressing power consumption

Active Publication Date: 2019-05-21
RENESAS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these proposals, since the maximum number of CPUs that can be used for task processing is limited to half of all CPUs belonging to both CPU groups, there is a problem of poor operating efficiency of CPU resources.

Method used

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  • Multi-cpu system and multi-cpu system adjustment method

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Embodiment Construction

[0034] 1. Outline of Embodiment

[0035] First, an outline of typical embodiments of the invention disclosed in this application will be described. In the summary description of the typical embodiments, the reference numerals in the drawings referred to in parentheses merely illustrate the structure included in the concept of the structural elements to which the reference numerals are attached.

[0036] (1)

[0037] An asymmetric multi-CPU system equipped with a plurality of CPUs (8a to 8d, 9a to 9d) with different data processing performance and power consumption for each type has definition information (10, 13), and the definition information (10 , 13) In such a way that the overall data processing performance and the maximum value of power consumption vary (the overall data processing performance and the maximum value of power consumption have different levels), the combination of the type and number of CPUs A plurality of methods are defined, and data processing is assi...

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Abstract

In an asymmetric multi-CPU system on which a plurality of type of CPUs with different data processing performance and power consumption are mounted in groups for each type, a plurality of forms of combination of the types and numbers of CPUs are defined in such a way that the maximum numbers of the overall data processing and power consumption very by stages. Then, the system performs a control of allocation of the data processing to the CPU identified by the form selected from the definition information according to the data processing environment, in order to reduce unnecessary power consumption according to the data processing environment, such as data processing load, and to easily achieve the required data processing performance.

Description

technical field [0001] The present invention relates to an asymmetrical multi-CPU (Central Processing Unit) system and to a scaling method therein, for example, to a technology that contributes to extending battery driving time by being applied to a portable information terminal device. Background technique [0002] As a technology for extending battery driving time while ensuring high data processing performance, there is a technology described in Patent Document 1. In this technology, in addition to the first CPU that performs data processing, a second CPU with lower peak performance and higher power efficiency than the first CPU is installed, and the load is monitored by using the second CPU. In some cases, the processing is executed by the first CPU, and when the load is small, the processing is executed by the second CPU instead of the first CPU. Thereby, leakage current during system operation is reduced according to the state of the load or temperature change. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/50
CPCG06F9/5094Y02D10/00
Inventor 中川哲也
Owner RENESAS ELECTRONICS CORP
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