#include "mpi.h" int MPI_Gather ( void *sendbuf, int sendcnt, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm )
sendbuf | starting address of send buffer (choice)
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sendcount | number of elements in send buffer (integer)
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sendtype | data type of send buffer elements (handle)
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recvcount | number of elements for any single receive (integer,
significant only at root)
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recvtype | data type of recv buffer elements
(significant only at root) (handle)
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root | rank of receiving process (integer)
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comm | communicator (handle)
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All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGER in Fortran.
All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Errhandler_set; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error.
Location:gather.c