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Designing Distributed Shared Memory Systems

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Designing Distributed Shared Memory Systems

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Questions and Answers

What is the primary purpose of a node in a Distributed Shared Memory (DSM) system?

To manage the entire distributed memory

To only cache memory pages

To contribute a portion of its physical memory to the DSM system (correct)

To replicate memory pages only

How is every address in a DSM system uniquely identified?

By a combination of the node identifier and the page frame number (correct)

By a unique node identifier

By a combination of the node identifier and the memory page number

By a unique page identifier

What is the role of the home node for a page in a DSM system?

To replicate memory pages only

To manage the entire distributed memory

To drive all the coherence operations related to that page (correct)

To cache memory pages only

What is the primary reason for incorporating caching in a DSM system?

To achieve low latency and high performance Signup and view all the answers

What information does the home node keep track of for its memory pages?

Pages accessed, modifications, caching enabled/disabled, and lock status Signup and view all the answers

What is the purpose of the information kept by the home node for its memory pages?

To enforce the sharing semantics that a given DSM will implement Signup and view all the answers

What is the main issue with accessing a page repeatedly from a node that is not its home node?

It causes a significant delay in state updates. Signup and view all the answers

What is the role of the home node in a DSM system?

To keep track of who is the current owner of a given page. Signup and view all the answers

What is the benefit of separating the home node from the owner node?

It allows for more flexibility in managing state updates. Signup and view all the answers

What is the purpose of creating page replicas in a DSM system?

To increase the performance of the system through load balancing. Signup and view all the answers

In a datacenter environment, how many copies of shared state are typically created?

Three Signup and view all the answers

What is responsible for managing the consistency of page replicas in a datacenter environment?

All of the above. Signup and view all the answers