Why is the NUMA design more scalable than the UMA design?
A) NUMA systems are loosely coupled, whereas UMA systems are tightly coupled.
B) NUMA systems reduce bus collisions when each processor's local memory services most of the processor's memory requests. By contrast, UMA systems can saturate the shared bus quickly.
C) NUMA systems use more than one memory module, whereas UMA systems use only one.
D) Memory access time is faster in NUMA systems than in UMA systems.

Question

Quizplus · Accepted Answer

NUMA systems allow each processor to access its own local memory faster, reducing the need for accessing shared memory and thus minimizing bus collisions and contention, leading to better scalability compared to UMA systems where all processors share the same memory bus.

Why Is the NUMA Design More Scalable Than the UMA