Page 9 - DFC2063 OPERATING SYSTEM Topic 1.2

VARIOUS ARCHITECTURE OS

• Multiple processors further divided in two types:

i. Asymmetric Multiprocessing Systems (AMS)

The multiprocessing system, in which each processor is assigned a specific task, is known

as Asymmetric Multiprocessing Systems. In this system there exists master slave

relationship like one processor defined as master and others are slave. The master

processor controls the system and other processor executes predefined tasks. The master

processor also defined the task of slave processors.

ii. Symmetric Multiprocessing Systems (SYS)

The multiprocessing system in each processor performs all types of task within the

operating system. All processors are peers and no master slave relationship exits. In SMP

systems many programs can run simultaneously. But I/O must control to ensure that data

reach the appropriate processor because all the processor shares the same memory.