'Mpi int' diaporamas de présentation

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MPI Program Performance

MPI Program Performance. Self Test with solution. Amdahl's Law Profiles Relative efficiency Load imbalances Timers Asymptotic analysis Execution time Cache effects Event traces Absolute speedup.

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CS 420

CS 420. Overview of MPI MPI Concepts Basic MPI Functions. MPI Overview. MPI = Message Passing Interface A mechanism/protocol/standard for developing and implementing parallel programs. MPI. MPI evolved from other message passing systems Other message passing systems include-

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MPI_Bcast

MPI_Bcast. Bcast stands for broadcast, and is used to send data from one process to all other processes. The format for this function is: MPI_Bcast(&msg_address,#_elements,MPI_Type, ID, Communicator). MPI_Bcast (&k, 1, MPI_INT, 0, MPI_COMM_WORLD) Process 0 sends k to all other processes.

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