From the course: Computer Architecture Essentials
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Memory in multiprocessor systems
From the course: Computer Architecture Essentials
Memory in multiprocessor systems
- [Instructor] Now let's talk about memory in Multiprocessor Systems. The primary objective of Multiprocessor systems is to execute tasks in parallel, dividing work across multiple processors to improve performance and handle larger workloads. These systems can be broadly categorized into two main memory models, shared memory and distributed memory. In shared memory systems, such as UMA and NUMA architectures, all processors can directly access a global memory. UMA systems have uniform memory access times, while NUMA systems provide faster access to local memory and slower access to remote memory. In distributed memory systems, like computing clusters or MPI, each processor has a private memory. Processors communicate by explicitly sending messages over a network, which offers scalability at the cost of more complex programming. Regardless of the model, managing memory introduces significant challenges. In shared memory systems, keeping cached copies of data consistent across…
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