week 11

Question 1

What is green software engineering

Answer 1

building software so it minimises damage on environment and maximises sustainability

Question 2

carbon efficient

Answer 2

minimising carbon emitted per unit of work

We aim to get the most value out of each gram of carbon emitted

Question 3

benefits of green software

Answer 3

simpler architecture usually results in more green software

. techniques to develop more green software usually results in faster computing

low resource usage

Question 4

sustainable application

Answer 4

accountable for amount of energy it consumes and designed to minimise it

Question 5

carbon intensity

Answer 5

The amount of co2 released to produce a KWH (kilowatt hour)

Question 6

energy proportionality

Answer 6

relationship between power consumed by a computer and useful rate at which useful work is done

Question 7

utilisation

Answer 7

how much of a computers resource is used

Question 8

Energy proportionality, the rate of energy consumption to useful work, suggests that the most
efficient strategy is to employ fewest number of servers possible with the highest rate of utilisation.

Question 9

can either use power monitors or energy profilers to measure power consumption

Answer 9

power monitiors - external and harder to install but its more accurate

energy profiler - on the laptop however it relies on estimation

Question 10

image sizing

Answer 10

use a single high quality image rather than multiple images

display no images by default

reduce image size

Question 11

unused features

Answer 11

if unused features remove them