energy

Instruments doesn't show Energy Usage Level: it is empty

由 让人想犯罪 __ 提交于 2020-01-02 04:54:11
问题 I have followed the Apple steps to get my app energy usage level from my device using Energy Diagnostics Instruments (https://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptual/InstrumentsUserGuide/Built-InInstruments/Built-InInstruments.html#//apple_ref/doc/uid/TP40004652-CH6-SW63). I have tried with my own app and with several apps from the AppStore and I always get all the info expected (including time flags) except the Energy Usage Info. Simply, the Energy Usage Bar

Calculating energy using MATLAB

由 血红的双手。 提交于 2019-12-30 07:39:08
问题 Energy, which is as follows: can be found based on the MATLAB documentation using: stats = graycoprops(glcm, properties) For example, I typed this: >> a = [1 2; 3 4] a = 1 2 3 4 >> stats = graycoprops(a, {'energy'}) stats = Energy: 0.3000 If we want to do this manually , how did we get the energy value shown above? This is the part I didn't get clearly. 回答1: If I'm not wrong: ans=sum(a(:).^2)/sum(a(:)).^2 来源： https://stackoverflow.com/questions/14599816/calculating-energy-using-matlab

How can I measure the energy consumption of my application on Windows Mobile and Windows CE?

由 纵饮孤独 提交于 2019-12-29 08:21:29
问题 I want to measure the energy consumption of my own application (which I can modify) 3rd party applications (which I can't modify) on Windows CE 5.0 Windows Mobile 5/6 Is there some kind of API for this? If not, can I measure other values which I can use to estimate the energy consumption? I don't need an exact value like 20 mAh (although that would be nice) A relative value would suffice, like: "Starting from 100% to 0% charge status, around 20% of the fully charged battery was used by this

how to calculate power consumption on an Android mobile that uses wifi?

由 谁说我不能喝 提交于 2019-12-19 04:04:53
问题 I have implemented a routing protocol on an Android 1.6 mobile that uses wireless (ad-hoc) network in order to exchange messages. Now I would like to evaluate it under an energy consumption point of view, the base would be to try to calculate the energy wasted to transmit a single packet, do anybody has any idea how to do that? Software/hardware solutions are welcome! 回答1: I don't believe that any application will give you any form of meaningful result. You really need to be looking at a

英语短文30

由 删除回忆录丶 提交于 2019-12-13 22:45:24
A Blueprint for a Quantum Battery That Never Loses Charge A team of scientists from the universities of Alberta and Toronto have laid out the blueprints for a “quantum battery” that never loses its charge. To be clear, this battery doesn’t exist yet — but if they figure out how to build it, it could be a revolutionary breakthrough in energy storage. “The batteries that we are more familiar with — like the lithium-ion battery that powers your smartphone — rely on classical electrochemical principles, whereas quantum batteries rely solely on quantum mechanics,” University of Alberta chemist

Is it possible to extract instruction specific energy consumption in a program? [closed]

由 ぐ巨炮叔叔 提交于 2019-12-13 08:16:28
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . What i mean is that given a source code file is it possible to extract energy consumption levels for a particular code block or 1 single instruction, using a tool like perf? 回答1: There are tools for measuring power consumption (see @jww's comment for links), but they don't even try

Estimate Power Consumption Based on Running Time Analysis / Code Size

由 怎甘沉沦 提交于 2019-12-12 01:35:43
问题 I've developed and tested a C program on my PC and now I want to give an estimate of the power consumption required for the program to do a single run. I've analysised the running time of the application and of invidiual function calls within the application and I know the code size both in assembly lines, but also raw C lines. How would I give an estimate of the power consumption based on the performance analysis and/code size? I suppose it scales with the amount of lines that uses the CPU

Measure the electricity consumed by a browser to render a webpage

由 坚强是说给别人听的谎言 提交于 2019-12-11 10:06:18
问题 Is there a way to calculate the electricity consumed to load and render a webpage (frontend)? I was thinking of a 'test' made with phantomjs for example: load a web page scroll to the bottom And measure how much electricity was needed. I can perhaps extrapolate from CPU cycle. But phantomjs is headless, rendering in real browser is certainly different. Perhaps it's impossible to do real measurements.. but with an index it may be possible to compare websites. Do you have other suggestions? 回答1

Instruments doesn't show Energy Usage Level: it is empty

由 戏子无情 提交于 2019-12-05 10:59:53
I have followed the Apple steps to get my app energy usage level from my device using Energy Diagnostics Instruments (https://developer.apple.com/library/ios/#documentation/DeveloperTools/Conceptual/InstrumentsUserGuide/Built-InInstruments/Built-InInstruments.html#//apple_ref/doc/uid/TP40004652-CH6-SW63). I have tried with my own app and with several apps from the AppStore and I always get all the info expected (including time flags) except the Energy Usage Info. Simply, the Energy Usage Bar doesn't show any graph (it does show the running time) and the Energy Consumption table (detail view)

Pairwise Distance Calculation in c++

由 天涯浪子 提交于 2019-12-05 05:02:45
问题 I'm computing the potential energy of a large (~1e5) number of particles in c++. In order to do this, I'm running a double loop in which I calculate pairwise distances, and from those distance compute the total potential energy of the system. Below is the relevant piece of the code (it's not copy/paste ready, since data needs to be defined, and a few things are out of context; the method is still valid, and this is what I'm trying to show here): int colstart = 2; int colend = 4; double PE = 0
订阅 energy