Question: 2) To run an MPI program on a linear array of 4 nodes, what allocation of processes (viz., the list of the ranks of the

2) To run an MPI program on a linear array of 4 nodes, what allocation of processes (viz., the list of the ranks of the processes allocated on each node of the linear array) is possible? A. 0 1 2 3 B. 3 2 1 0 C. 1 2 3 4 D. A and B

3) Suppose that node A is sending an n-packet message to node B in a distributed-memory system with a static network. Also suppose that the message must be forwarded through k intermediate nodes. The startup time is s and the time for transmitting one packet to a nearby node is c. What is the most proper formula for calculating the time for the above communication? A. s + k c + n - 1 B. s + k n c C. k n (s + c) D. s + (k + n) c

4) Which one of the following is NOT a collective communication function? A. MPI_Send B. MPI_Reduce C. MPI_Bcast D. MPI_All

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