I'm new to OpenMPI and would like to know whether there is a common way for a caller of mpirun to communicate with the mpi processes. Basically I have a setup where one process is responsible for distributing jobs to other mpi processes and collecting the respective results afterwards. Now for example I want to enable communication between the master process and a GUI application. The GUI should be notified by the master about progress being made and it should also be possible for the GUI to send commands to the master (so the communication should be possible in both ways) Is stdin/stdout suitable? (is sending binary data a problem with this type of communication?) I also read that the MPI specification does not say anything about the use of stdin/stdout. Is it safe to assume that most common MPI implementations support it? Another way to deal with the problem would be to write some custom network code that is used alongside the MPI communication. What is commonly used in this situation?
Best regards Timm
