1.Shared Memory System: This is where multiple processors are attached to an interconnected network and access a common region of memory.
Share Memory advantages It is closer to conventional machine and easy to program.
Disadvantages:__I'>Disadvantages: It leads to bottleneck problem.
Expensive to build.
It is less sensitive to partitioning
2. Shared disk system: where each processor has its own main memory, and direct access to all disks through an interconnected network.
Shared disk advantages: The same with shared memory
Disadvantages: More interference
Increases N/ W band width.
Shared disk is less sensitive to partitioning.
3. Shared Nothing:This is where each processor has local main memory and disk space, but no two processors can access the same storage area and all communication between processor is through a network connection. It has its own mass storage as well as main memory.
Shared Nothing Advantages: It provides linear scale up and linear speed up.
Shared nothing benefit from “ good” partitioning.
Cheap to build.
Shared Nothing Disadvantages: It is hard to program.
