Abstract EN:

Multimedia applications in general and MPEG in particular are increasingly popular and important workloads for future embedded systems. Multimedia applications are based on algorithms that require a high computational processing power, and high memory and width The high memory bandwidth requirements do not only affect the real-time behaviour of such applications but also their energy consumption. In this thesis, we extracted multimedia specific characteristics based on memory access behaviour of multimedia applications running on embedded system. Hence, based on these characteristics we proposed a new data prefetch mechanism called Pattern-Driven Prefetching (PDP). PDP inspects the sequence of data cache misses and detects recurring patterns within that sequence. According to the patterns being detected, PDP initiates prefetch actions to anticipate future cache misses. PDP demonstrates interesting features both for existing embedded systems, equipped with small cache, as well as for future high performance embedded systems, equipped with large caches.