That sound 'cheap' but if you think of the clock rate of a CPU, doing those tasks in parallel will take time to setup, process and teardown. That example doesn'

That sound 'cheap' but if you think of the clock rate of a CPU, doing those tasks in parallel will take time to setup, process and teardown. That example doesn't really work well. Fitting problems into grids of processing like SIMD or GPU's is tricky because not a lot of problems fit those well like images. Most of what you're asking for is about understanding business flow which a language will never do.