OK, So what does Non-Uniform Memory Access really mean to me?
Non-Uniform Memory Access means that it will take longer to access some regions of memory than others. This is due to the fact that some regions of memory are on physically different busses from other regions. For a more visual description, please refer to the section on NUMA architecture implementations. Also, see the real-world analogy for the NUMA architecture. This can result in some programs that are not NUMA-aware performing poorly. It also introduces the concept of local and remote memory.
