Lecture notes: Introduction to Parallel Programming

The lecture discusses applications of parallel programming (HPC -> modelling, computational science, data processing, those kinds of things).

# Homework to Introduction
*Modern CPUs use multiple cores, but the speeds (clock frequencies) of individual cores hardly increase anymore. Someone claims that this shows that Moore’s law no longer holds. Explain whether this claim is true or false.*

This is false; Moore's law was never about speed, but about transistor density. Transistor density is still increasing exponentially, although we will of course eventually run into physical limits. The clock frequency is indeed no longer increasing; this is because it is very difficult to dissipate the increased power from increasing clock frequencies. Instead of increasing clock frequencies, the amount of cores on a chip is increasing.


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