MPI_Iprobe

Nonblocking test for a message.

📝 Syntax

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

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

📥 Input argument

• rank - an integer value: source rank.

• tag - an integer value: message tag.

• comm - a MPI_Comm object.

📤 Output argument

• 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

Nonblocking test for a message.

💡 Example

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

🔗 See also

MPI_Probe.

🕔 History

Version	📄 Description
1.0.0	initial version