Implement a custom MPI datatype for a struct (in C) or a derived type (in Fortran).
Starting from a skeleton code for a program that sends an array of structs (derived types in Fortran) between two tasks.
- Implement a user-defined datatype that can be used for sending the structured data and verify that the communication is performed successfully. Check the size and true extent of your type.
- Implement the same send by sending just a stream of bytes (type
MPI_BYTE). Verify correctness and compare the performance of these two approaches.