implement MPI -- 2

o Use totally 4 processes on 4 virtual servers mpiexec --map-by node --mca oob_tcp_if_include eth1 –n 4 ./MYPROG LENGTH o Parameter LENGTH indicates the string length (Be careful: it could be any number). o Inside the program, randomly generate the string (Let’s use upper-case letters). o Print out the whole string on the screen. o Process 0 distributes substrings to the other three and let them sort the substring. o Process 3 might receiver a shorter substring o Process 0 collects all sorted substrings and merges them for a completely sorted string. o Print out the sorted string on the screen.