Re: [Trisquel-users] Taurinus X200 laptop now FSF-certified to respect your freedom

[onpon4]

Indeed, combining 100 processors together would in practice mostly just allow  
you to run 100 programs simultaneously without adding further slowdown.  
Multi-threaded programs that can actually take advantage of multiple  
processing cores do exist, of course, but it's a difficult job to do and  
typically reserved for programs that really need it. Even then, it's usually  
only a small number of threads, nowhere near 100; there's only so much you  
can do concurrently, after all.

Some jobs can of course be easily split up, like brute-force password  
cracking, but most of the time there is a certain order you need to do some  
essential things in. If you have to do 10 jobs before moving onto the next  
set of jobs, and one of them is guaranteed to take 10 milliseconds while the  
rest of them take only 1 millisecond, it's no help at all to give an  
individual thread to the rest of them; you might as well just split those  
jobs into two threads, one for the job that's going to take 10 milliseconds  
and one for the 9 jobs that are going to take 1 millisecond each.