Method for setting up system real-time power consumption model on basis of fine-grained performance counters
A kind of counter and fine-grained technology, applied in the direction of instrumentation, calculation, electrical digital data processing, etc., can solve problems such as unsatisfactory results, affecting the accuracy of power consumption models, and low precision
Active Publication Date: 2014-04-30
JIANGNAN INST OF COMPUTING TECH
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In fact, in addition to the above factors, there are many other factors that affect the power consumption of the runtime system. Ignoring these factors will inevitably affect the accuracy of the power consumption model.
Using them for power scheduling gives suboptimal results due to low precision
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[0030] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.
[0031] The real-time power consumption of a computer system can be decomposed into the sum of the power consumption of each hardware functional unit, and the real-time power consumption of each hardware functional unit is determined by its inherent power consumption characteristics and real-time usage. In this case, the real-time power consumption of the hardware unit can be calculated by obtaining the real-time usage of the hardware unit. The number of occurrences of activity events monitored by the hardware performance counter can accurately and intuitively reflect the usage of hardware components when the system is running, and it is also the most intuitive and accurate way to obtain its power consumption. However, in the current research, it...
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The invention provides a method for setting up a system real-time power consumption model on the basis of fine-grained performance counters. The method includes the steps of preselecting the fine-grained performance counters which can reflect the running state of a system as a preselection characteristic value set, setting up the corresponding relation between the preselection characteristic value set and the running power consumption through experiments so as to form a multi-element equation set, conducting model solution on the multi-element equation set through a multiple linear regression method so as to obtain the coefficients of all the performance counters on the power consumption, and accordingly setting up a real-time power consumption model of the system, and obtaining a set of effective performance characteristic values which actually affect the power consumption in the running process of the system.
Description
technical field [0001] The invention relates to the fields of integrated circuit design, power consumption estimation, dynamic power consumption management, system software design and system hardware design, and more specifically, the invention relates to a method for establishing a real-time power consumption model of a system based on fine-grained performance counters. Background technique [0002] Energy consumption has become an important factor restricting the development of information technology. The real-time acquisition of the power consumption value of the computer system is the premise and key issue of dynamic power consumption management. Obtaining accurate energy consumption values is the premise and basis for low-power scheduling. [0003] It is expensive to directly add power consumption measurement hardware components to the system, and most systems do not support it. Therefore, it has very practical significance to accurately estimate the system power con...
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Inventor 程华陈左宁朱建涛贾家涛王礼生王明扬李超董国良程来旺张超容夏志禹
Owner JIANGNAN INST OF COMPUTING TECH