Multiprocessor: Difference between revisions

Revision as of 13:48, 7 May 2017

Revision as of 14:06, 7 May 2017

Line 54:

[[Symmetric Multiprocessor System|SMP]] is a system with a pool of homogeneous processors running independently of each other. Each processor, executing different programs and working on different sets of data, has the capability of sharing common resources (memory, I/O device, interrupt system and so on) that are connected using a system bus or a crossbar or a mix of two previously approach, bus for address and crossbar for Data (Data crossbar) [25][26][27].

Each processor have a its own cache that acts as a bridge between processor and Main Memory. The function of the cache memory is to speed up the MM data access (performance increasing) and most important, in multiprocessor systems with shared memory, to reduce the system bus and MM traffic that is one of the major bottleneck of these systems. In these system the cache is aan essential element.

The shared memory allows an Uniform Memory Access time (UMA)