Podcast
Questions and Answers
What is the primary focus of the Distributed File System (DFS) lesson?
What is the primary focus of the Distributed File System (DFS) lesson?
- Peer-to-peer communication
- Caching mechanisms (correct)
- State coordination among servers
- Client-server architecture
In a Distributed File System, which nodes own and manage the state?
In a Distributed File System, which nodes own and manage the state?
- Peer nodes
- Server nodes (correct)
- Client nodes
- Both client and server nodes
What is the characteristic of a Peer Distributed Application?
What is the characteristic of a Peer Distributed Application?
- All nodes are peers and share the state (correct)
- Servers manage the state and clients access it
- Clients manage the state and servers access it
- There is no state sharing among nodes
What is the overall application state in a Peer Distributed Application?
What is the overall application state in a Peer Distributed Application?
What is the relationship between nodes in a Peer Distributed Application?
What is the relationship between nodes in a Peer Distributed Application?
What is a characteristic of state in a Peer Distributed Application?
What is a characteristic of state in a Peer Distributed Application?
What is the issue with using variables in a distributed shared memory (DSM) system?
What is the issue with using variables in a distributed shared memory (DSM) system?
What is a more suitable granularity for a DSM system integrated at the operating system level?
What is a more suitable granularity for a DSM system integrated at the operating system level?
What is the advantage of using page-based granularity in a DSM system?
What is the advantage of using page-based granularity in a DSM system?
What is a disadvantage of the language level solution for DSM?
What is a disadvantage of the language level solution for DSM?
What is the issue with increasing the granularity of sharing in a DSM system?
What is the issue with increasing the granularity of sharing in a DSM system?
What is an example of false sharing in a DSM system?
What is an example of false sharing in a DSM system?
What is the main role of the DSM layer in a single reader/single writer application?
What is the main role of the DSM layer in a single reader/single writer application?
What is the performance metric to analyze in a DSM solution?
What is the performance metric to analyze in a DSM solution?
What is a way to maximize the proportion of local memory accesses in a DSM system?
What is a way to maximize the proportion of local memory accesses in a DSM system?
What is the limitation of the migration solution in a DSM system?
What is the limitation of the migration solution in a DSM system?
What is the primary reason for creating page replicas in datacenter environments?
What is the primary reason for creating page replicas in datacenter environments?
What is the role of the manager node in a DSM system?
What is the role of the manager node in a DSM system?
What is the purpose of the global map in a DSM system?
What is the purpose of the global map in a DSM system?
Why does the DSM layer need to intercept every access to the shared state?
Why does the DSM layer need to intercept every access to the shared state?
What is the role of the MMU in a DSM system?
What is the role of the MMU in a DSM system?
What is the benefit of using a global mapping table in a DSM system?
What is the benefit of using a global mapping table in a DSM system?
Why is it important to maintain metadata for each page in a DSM system?
Why is it important to maintain metadata for each page in a DSM system?
What is the advantage of using an object-based DSM system?
What is the advantage of using an object-based DSM system?
What is the purpose of the DSM layer in a DSM system?
What is the purpose of the DSM layer in a DSM system?
What guarantee do causal consistency models provide in terms of update ordering?
What guarantee do causal consistency models provide in terms of update ordering?
In the weak consistency models, what purpose does a synchronization point serve?
In the weak consistency models, what purpose does a synchronization point serve?
What does a synchronization operation performed by P1 after writing to m1 guarantee according to the weak consistency model?
What does a synchronization operation performed by P1 after writing to m1 guarantee according to the weak consistency model?
How does the weak consistency model handle synchronization between processors regarding visibility of updates?
How does the weak consistency model handle synchronization between processors regarding visibility of updates?
What is the primary purpose of a sync operation in weak consistency models?
What is the primary purpose of a sync operation in weak consistency models?
What is the consequence of not explicitly synchronizing with the rest of the system in weak consistency models?
What is the consequence of not explicitly synchronizing with the rest of the system in weak consistency models?
In weak consistency models, when does P2 see all previous updates made to any memory location in the system?
In weak consistency models, when does P2 see all previous updates made to any memory location in the system?
What controls the overheads imposed by the DSM layer in fine-grained synchronization operations?
What controls the overheads imposed by the DSM layer in fine-grained synchronization operations?
What is the purpose of an entry/acquire point in a system providing finer-grained synchronization operations?
What is the purpose of an entry/acquire point in a system providing finer-grained synchronization operations?
How does separating synchronization types into entry/acquire and exit/release points benefit the system?
How does separating synchronization types into entry/acquire and exit/release points benefit the system?
Why does the solution of permitting multiple copies of the same data page require consistency management?
Why does the solution of permitting multiple copies of the same data page require consistency management?
What is the purpose of consistency management in DSM systems?
What is the purpose of consistency management in DSM systems?
What is the strategy called when one processor’s cached value of a variable is invalidated when another processor updates that variable?
What is the strategy called when one processor’s cached value of a variable is invalidated when another processor updates that variable?
What is the drawback of supporting the write-invalidate strategy in a DSM system?
What is the drawback of supporting the write-invalidate strategy in a DSM system?
What is the purpose of the home node in a DSM system?
What is the purpose of the home node in a DSM system?
What is the role of the owner node in a DSM system?
What is the role of the owner node in a DSM system?
What is the purpose of separating the distinction of home node from an owner node in a DSM system?
What is the purpose of separating the distinction of home node from an owner node in a DSM system?
What is the purpose of caching in a DSM system?
What is the purpose of caching in a DSM system?
What is the global shared memory composed of in a DSM system?
What is the global shared memory composed of in a DSM system?
What is the purpose of the DSM layer in a DSM system?
What is the purpose of the DSM layer in a DSM system?
What is the primary purpose of a consistency model in a distributed system?
What is the primary purpose of a consistency model in a distributed system?
What is the main constraint of the interleaving in sequential consistency?
What is the main constraint of the interleaving in sequential consistency?
What is the main difference between strict consistency and sequential consistency?
What is the main difference between strict consistency and sequential consistency?
Why is strict consistency impossible to achieve in practice?
Why is strict consistency impossible to achieve in practice?
What is the main advantage of sequential consistency over strict consistency?
What is the main advantage of sequential consistency over strict consistency?
What is the main goal of causal consistency?
What is the main goal of causal consistency?
What is the main limitation of strict consistency?
What is the main limitation of strict consistency?
What is the relationship between the consistency model and the software layers in a system?
What is the relationship between the consistency model and the software layers in a system?
Why is it important to ensure that the way operations access memory is representative of how the operations were issued?
Why is it important to ensure that the way operations access memory is representative of how the operations were issued?
What is the main advantage of consistency models in distributed systems?
What is the main advantage of consistency models in distributed systems?