a) Write data from all MPI tasks to a single file using the spokesman strategy. Gather data to a single MPI task and write it to a file. The data should be kept in the order of the MPI ranks.
b) Verify the above write by reading the file using the spokesman strategy. Use different number of MPI tasks than in writing.
c) Implement the above write so that all the MPI tasks write in to separate files. Skeleton codes are found in spokesman.c and spokesman_reader.c, or in spokesman.F90 and spokesman_reader.F90