Discussing multiprocessor systems – cache locality and cache friendliness in C++
You probably recall Chapter 2 at this point, where we discussed multi-thread and multi-core processors. The respective computational units were presented as processors. We also visualized the transport of instructions from the NVM (the disk) to the processors, through which we explained the creation of processes and software threads.
We want our code to be as performant as required. The most important aspect of getting the code to perform well is the choice of appropriate algorithms and data structures. With a bit of thought, you can try to squeeze the most out of every last CPU cycle. One of the most common examples of misusing algorithms is sorting a large, unordered array with bubble sort. So, make sure to learn your algorithms and data structures – together with the knowledge from this section and beyond, it will make you a really powerful developer.
