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C++ API

Function File: = helloworld ()

This function demonstrates sending and receiving a string message over MPI. Each process will send a message to process with rank 0, which will then display it. To run this example, set the variables HOSTFILE and NUMBER_OF_MPI_NODES to appropriate values, then type the following command in your shell: 

          mpirun --hostfile $HOSTFILE -np $NUMBER_OF_MPI_NODES octave --eval 'pkg load mpi; helloworld ()'

See also: hello2dimmat hellocell hellosparsemat hellostruct mc_example montecarlo Pi

Demonstration 1

The following code

 system ("mpirun --hostfile $HOSTFILE -np $NUMBER_OF_MPI_NODES octave -q --eval 'pkg load mpi; helloworld ()'");

gives an example of how 'helloworld' is used.

Package: mpi