Prefetch (PF) is a technique based on memory anticipation used to speed up computational operations. Prefetch or prefetching stands for the early fetching of instructions or data that the processor
needs for upcoming arithmetic operations. The fast fetching of data to the processor is very important because the reloading causes waiting times and thus the computing performance
suffers. Only prefetching reduces these reload times because data is provided in advance. Since computing operations are not known in advance, the prefetch procedure works analytically with probabilities.
It involves moving the data that is likely to be needed next from memory to a higher staging level. It is therefore a prediction technique that works very efficiently depending on the computer architecture.