The operating system is responsible for deciding which task should be using the processor at a given time and for controlling access to Shared resources.
一个操作系统负责决定哪一个任务在给定的时间将使用处理器，并且控制对共享资源的访问。
2
For example, each processor has its own memory but also access to Shared memory with a different access latency.
例如，每个处理器拥有自己的内存，访问共享内存时具有不同的访问延迟。
3
Each processor has equal access to the Shared memory (the same access latency to the memory space).