<< Nelson 1.9.0.0

Message Passing Interface

MPI_Allreduce >>

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Message Passing Interface

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In the world of parallel computing the Message Passing Interface (MPI) is the de facto standard for implementing programs on multiple processors.

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• MPI_Allreduce — Combines values from all processes and distributes the result back to all processes.
• MPI_Barrier — Blocks until all processes in the communicator have reached this routine.
• MPI_Bcast — Broadcasts a message from the process with rank "root" to all other processes of the communicator
• MPI_Comm_delete — Removes MPI_Comm object.
• MPI_Comm_get_name — Return the print name from the communicator.
• MPI_Comm_object — Creates MPI_Comm object.
• MPI_Comm_rank — Determines the rank of the calling process in the communicator.
• MPI_Comm_size — Determines the size of the group associated with a communicator.
• MPI_Comm_split — Partitions the group that is associated with the specified communicator into a specified number of disjoint subgroups.
• MPI_Comm_used — Returns list of current used MPI_Comm handle.
• MPI_Finalize — Terminate the MPI execution environment.
• MPI_Get_library_version — Return the version number of MPI library.
• MPI_Get_processor_name — Gets the name of the processor.
• MPI_Get_version — Return the version number of MPI.
• MPI_Init — Initialize the MPI execution environment.
• MPI_Initialized — Indicates whether MPI_Init has been called.
• MPI_Iprobe — Nonblocking test for a message.
• MPI_Probe — Blocking test for a message.
• MPI_Recv — Blocking receive for a message.
• MPI_Reduce — Reduces values on all processes to a single value.
• MPI_Send — Performs a blocking send.
• MPI examples — Some Nelson MPI examples.
• MPI overview — Access to MPI features from Nelson.
• mpiexec — Run an MPI script.