A Driving Metaphor
Amdahl's Law approximately suggests:
| “ | Suppose a car is traveling between two cities 60 miles apart, and has already spent one hour traveling half the distance at 30 mph. No matter how fast you drive the last half, it is impossible to achieve 90 mph average before reaching the second city. Since it has already taken you 1 hour and you only have a distance of 60 miles total; going infinitely fast you would only achieve 60 mph. | ” |
Gustafson's Law approximately states:
| “ | Suppose a car has already been traveling for some time at less than 90mph. Given enough time and distance to travel, the car's average speed can always eventually reach 90mph, no matter how long or how slowly it has already traveled. For example, if the car spent one hour at 30 mph, it could achieve this by driving at 120 mph for two additional hours, or at 150 mph for an hour, and so on. | ” |
Read more about this topic: Gustafson's Law
Famous quotes containing the words driving and/or metaphor:
“There is a blessed necessity by which the interest of men is always driving them to the right; and, again, making all crime mean and ugly.”
—Ralph Waldo Emerson (1803–1882)
“A theology whose god is a metaphor is wasting its time.”
—Mason Cooley (b. 1927)