non-uniform memory access (memory) (NUMA)

The NUMA architecture (Non-Uniform Memory Access) is a memory management that compensates for the disadvantages of Uniform Memory Access( UMA). The concept of the NUMA architecture is based on the fact that local memory is accessed faster than non-local memory.

The NUMA concept distinguishes between an architecture with and without cache: NC-NUMA(No Cache) has no cache, CC-NUMA, which stands for Cache Coherent NUMA, is a database-based NUMA method with cache that works with multiprocessor systems.

In this method, the caches in which the individual memory lines are located and their status are entered in a database. If a processor wants to access such a memory line, then the database indicates the location and the status of the data word, whether it is a copy or an updated copy.