mpid_probe.tex

刚才是说明 现在是安装程序在 LINUX环境下进行编程的MPICH安装文件

\startmanpage
\mantitle{MPID{\tt \char`\_}Probe}{tex}{10/7/2002}
\manname{MPID{\tt \char`\_}Probe}
--- Block until a matching request is found and return information  about it 
\subhead{Synopsis}
\startvb\begin{verbatim}
int MPID_probe( int source, int tag, MPID_Comm *comm,
               int context_offset, MPI_Status *status )

\end{verbatim}
\endvb

\subhead{Input Parameters}
\startarg{source }{rank to match (or {\tt MPI{\tt \char`\_}ANY{\tt \char`\_}SOURCE})
}
\startarg{tag }{Tag to match (or {\tt MPI{\tt \char`\_}ANY{\tt \char`\_}TAG})
}
\startarg{comm }{communicator to match.
}
\startarg{context{\tt \char`\_}offset }{context id offset of communicator to match
}
\par
\subhead{Output Parameter}
\startarg{status }{{\tt MPI{\tt \char`\_}Status} set as defined by {\tt MPI{\tt \char`\_}Probe
}}
\par
\par
\subhead{Return Value}
Error code.
\par
\subhead{Notes}
Note that the values returned in {\tt status} will be valid for a subsequent
MPI receive operation only if no other thread attempts to receive the same
message.
(See the
discussion of probe in Section 8.7.2 Clarifications of the MPI-2 standard.)
\par
Providing the {\tt context{\tt \char`\_}offset} is necessary at this level to support the
way in which the MPICH implementation uses context ids in the implementation
of other operations.  The communicator is present to allow the device
to use message-queues attached to particular communicators or connections
between processes.
\par
\subhead{Module}
Request
\par
\endmanpage