4 ms·
> Pictured on the right is the time to access memory in a modern system, on the left the time it takes to do a round trip across the world. These seem swapped.
by rsaxvc 4y ago
> Pictured on the right is the time to access memory in a modern system, on the left the time it takes to do a round trip across the world.
These seem swapped.
- maffydub 4y agoEven if they're swapped, the maths doesn't work out - the ratio of squares is 1:42 while the ratio of latencies is 1:1500.
- googletron 4y agoDefinitely true! Good eye. Drawing out 1500 squares is tough.
- adwn 4y agoYou're off by a factor of 1000: 150 ms / 100 ns = 150e-3 / 100e-9 = 1.5 million. So it's even worse!
- googletron 4y agoI am aware just didn’t want to correct the person correcting the inaccuracies. I suppose I could have given the red squares a unit value in the illustration.
- googletron 4y agoThanks for pointing this out I will fix it.