Sorry about such a profound loss.

Maybe you can find some meaning in the fact that it did not happen the otherway around.

But think what your wife would have to go through if you passed earlier. It is that thought that makes me want to out last my wife, but in a state where I am useful in some way.

The more fundamental reason is Amdahl's law

https://en.wikipedia.org/wiki/Amdahl%27s_law

Even a tiny bit of serial instruction will limit the speed up

The plot doesn't appear to be in Amdahl territory yet. The single-threaded time in the plot looks to be around 39 seconds. A perfect division into 32 workers without overhead would make it 39 / 32 = 1.22 seconds. With the multi-threaded workload being reported as 1.5 seconds in the text, there's still only .3 seconds of overhead + serial instructions that can't be parallelized.

Every doubling of the number of workers halves the execution time cleanly in the plot, from 40 seconds to 20 seconds to 10 seconds. Eyeballing this for 32 over 16 workers is difficult, but it still seems close to halving the total time once again. So there's not a lot of Amdahl flattening, it's just the plain physics of looking at a inverse-proportional curve.

Thank you. Had not heard this one before.

I don't mind the dupe's but it makes sense to merge the discussions. Same for Bradbury.

I tried flagging my own comment but it seems one cannot. So flag away to draw attention.

How did you figure that out ?

If you view the paper in Arxiv's experimental HTML mode the text is faintly visible, no custom styling required.

My guess would be custom browser styling

To smell fresh cut grass. It can be quite enjoyable.

Thanks for sharing this gem.

Probably the best cover.

To each his own, I suppose.

I particularly like Bradbury's style. It reads very prose poetic. One of my favourite is Dandelion Wine, which you will probably hate.