I was reading about Amdahl's law and it state that value of Amdahl's law always lies between 0 and 1. My question is, is it still true in today's case/scenario? When we have system like core i7?
$\begingroup$
$\endgroup$
-
$\begingroup$ Amdahl's law is a horribly way to think about parallelism, but other than that ... sure. $\endgroup$ – Raphael♦ Aug 2 '17 at 16:04
$\begingroup$
$\endgroup$
Yes, it's still true. The speedup can't be less than zero (if parallelizing your code makes it slower, just run the serial version) or more than 100% (because saving more than 100% of the runtime would make the runtime negative).
Multicore processors are essentially just a matter of terminology changing over time. If you think you have one processor with four cores, Amdahl thinks you have four processors.
answered Aug 2 '17 at 14:53
