<< MPI_Initialized

Message Passing Interface

MPI overview >>

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MPI_Iprobe

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Nonblocking test for a message.

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Syntax

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[flag, stat, info] = MPI_Iprobe(rank, tag)

[flag, stat, info] = MPI_Iprobe(rank, tag, comm)

Input argument

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rank

an integer value: source rank.

tag

an integer value: message tag.

comm

a MPI_Comm object.

Output argument

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flag

an integer value: 1 if the message is ready to be received, 0 if it is not.

stat

a struct: source rank, message tag, error, count, cancelled for the accepted message.

info

an integer value: 0 (MPI_SUCCESS) other value is an error.

Description

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Nonblocking test for a message.

See also

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MPI_Probe.

Example

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mpiexec([modulepath('mpi'), '/examples/help_examples/MPI_Iprobe.m'], 4)

if ~MPI_Initialized()
  MPI_Init();
end
comm = MPI_Comm_object();
world_rank = MPI_Comm_rank();
world_size = MPI_Comm_size();

[FLAG, STAT, INFO] = MPI_Iprobe(world_rank,1, comm)

if MPI_Initialized()
  MPI_Finalize();
end

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET