Difference between Loosely Coupled and Tightly Coupled Multiprocessor System

Loosely Coupled Multiprocessor System:
It is a type of multiprocessing system in which, There is distributed memory instead of shared memory. In loosely coupled multiprocessor system, data rate is low rather than tightly coupled multiprocessor system. In loosely coupled multiprocessor system, modules are connected through MTS (Message transfer system) network.





Tightly Coupled Multiprocessor System:
It is a type of multiprocessing system in which, There is shared memory. In tightly coupled multiprocessor system, data rate is high rather than loosely coupled multiprocessor system. In tightly coupled multiprocessor system, modules are connected through PMIN, IOPIN and ISIN networks.







Let’s study the difference between loosely coupled and tightly coupled multiprocessor system:

S.NO Loosely Coupled Tightly Coupled
1. There is distributed memory in loosely coupled multiprocessor system. There is shared memory, in tightly coupled multiprocessor system.
2. Loosely Coupled Multiprocessor System has low data rate. Tightly coupled multiprocessor system has high data rate.
3. The cost of loosely coupled multiprocessor system is less. Tightly coupled multiprocessor system is more costly.
4. In loosely coupled multiprocessor system, modules are connected through Message transfer system network. While there is PMIN, IOPIN and ISIN networks.
5. In loosely coupled multiprocessor, Memory conflicts don’t take place. While tightly coupled multiprocessor system have memory conflicts.



My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.