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<TITLE>MPI_File_read_at_all</TITLE>
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<H1 id="MPI_File_read_at_all">MPI_File_read_at_all</H1>
Collective read using explicit offset
<H2>Synopsis</H2>
<PRE>
int MPI_File_read_at_all(MPI_File fh, MPI_Offset offset, void *buf,
int count, MPI_Datatype datatype, MPI_Status * status)
</PRE>
<H2>Input Parameters</H2>
<DL>
<DT><B>fh </B> <DD> file handle (handle)
</DL>
<DL>
<DT><B>offset </B> <DD> file offset (nonnegative integer)
</DL>
<DL>
<DT><B>count </B> <DD> number of elements in buffer (nonnegative integer)
</DL>
<DL>
<DT><B>datatype </B> <DD> datatype of each buffer element (handle)
</DL>
<P>
<H2>Output Parameters</H2>
<DL>
<DT><B>buf </B> <DD> initial address of buffer (choice)
</DL>
<DL>
<DT><B>status </B> <DD> status object (Status)
</DL>
<P>
<H2>Notes for Fortran</H2>
All MPI routines in Fortran (except for <tt>MPI_WTIME</tt> and <tt>MPI_WTICK</tt>) have
an additional argument <tt>ierr</tt> at the end of the argument list. <tt>ierr
</tt>is an integer and has the same meaning as the return value of the routine
in C. In Fortran, MPI routines are subroutines, and are invoked with the
<tt>call</tt> statement.
<P>
All MPI objects (e.g., <tt>MPI_Datatype</tt>, <tt>MPI_Comm</tt>) are of type <tt>INTEGER
</tt>in Fortran.
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