60 lines
946 B
Groff
60 lines
946 B
Groff
.TH MPI_File_open 3 "2/3/2025" " " "MPI"
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.SH NAME
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MPI_File_open \- Opens a file
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.SH SYNOPSIS
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.nf
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int MPI_File_open(MPI_Comm comm, ROMIO_CONST char *filename, int amode,
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MPI_Info info, MPI_File * fh)
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.fi
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.SH INPUT PARAMETERS
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.PD 0
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.TP
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.B comm
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- communicator (handle)
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.PD 1
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.PD 0
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.TP
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.B filename
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- name of file to open (string)
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.PD 1
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.PD 0
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.TP
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.B amode
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- file access mode (integer)
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.PD 1
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.PD 0
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.TP
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.B info
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- info object (handle)
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.PD 1
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.SH OUTPUT PARAMETERS
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.PD 0
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.TP
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.B fh
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- file handle (handle)
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.PD 1
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.SH NOTES FOR FORTRAN
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All MPI routines in Fortran (except for
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.I MPI_WTIME
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and
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.I MPI_WTICK
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) have
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an additional argument
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.I ierr
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at the end of the argument list.
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.I ierr
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is an integer and has the same meaning as the return value of the routine
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in C. In Fortran, MPI routines are subroutines, and are invoked with the
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.I call
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statement.
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All MPI objects (e.g.,
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.I MPI_Datatype
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,
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.I MPI_Comm
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) are of type
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.I INTEGER
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in Fortran.
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