Virtual Labs

What is MPI commonly used for in distributed systems?

a: Managing a shared memory space among distributed nodes Explanation

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b: Enabling message-passing between processes on different nodes Explanation

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c: Controlling hardware directly on a single machine Explanation

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d: Providing a standard library for building graphical user interfaces Explanation

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Which MPI operation would you use to send data from one process to another specific process?

a: MPI_Bcast Explanation

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b: MPI_Reduce Explanation

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c: MPI_Send Explanation

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d: MPI_Gather Explanation

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Which MPI operation would you use to broadcast a variable from one process to all other processes?

a: MPI_Send Explanation

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b: MPI_Recv Explanation

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c: MPI_Bcast Explanation

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d: MPI_Reduce Explanation

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In a distributed MPI program, how would you typically aggregate partial results from all nodes?

a: Using MPI_Bcast Explanation

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b: Using MPI_Scatter Explanation

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c: Using MPI_Reduce Explanation

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d: Using MPI_Cart_create Explanation

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Which of the following is a benefit of using non-blocking operations like MPI_Isend and MPI_Irecv in MPI?

a: They allow overlapping communication with computation Explanation

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b: They synchronize all processes simultaneously Explanation

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c: They require fewer resources than blocking operations Explanation

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d: They improve error handling for distributed systems Explanation

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Why is domain decomposition important in distributed systems?

a: It prevents nodes from communicating with each other Explanation

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b: It allows the problem to be split into parts processed independently Explanation

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c: It reduces the need for inter-process communication Explanation

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d: It ensures that all nodes have the same data Explanation

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Which of the following is a common challenge in distributed systems for computing π?

a: Ensuring all processes share a common memory space Explanation

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b: Maintaining precise synchronization across processes Explanation

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c: Storing the entire dataset on each node Explanation

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d: Avoiding any use of network resources Explanation

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Which MPI function would be used to define a grid topology for processes?

a: MPI_Bcast Explanation

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b: MPI_Comm_rank Explanation

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c: MPI_Gather Explanation

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d: MPI_Cart_create Explanation

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What is a benefit of using the Monte Carlo method to compute π in a distributed system?

a: It requires no random numbers for approximation Explanation

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b: It provides an exact value of π Explanation

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c: It is easily parallelizable and can handle failures gracefully Explanation

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d: It is unaffected by the number of samples used Explanation

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Computing π