| 1 |
MPI_BARRIER(comm) Global Synchronization within a given communicator
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| 2 |
MPI_BCAST Global Broadcast
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| 3 |
MPI_GATHER Concatenate data from all processors in a communicator into one process
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MPI_ALLGATHER puts result of concatenation in all processors
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| 4 |
MPI_SCATTER takes data from one processor and scatters over all processors
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| 5 |
MPI_ALLTOALL sends data from all processes to all other processes
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| 6 |
MPI_SENDRECV exchanges data between two processors -- often used to implement "shifts"
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viewed as pure point to point by some
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