Choice of seed

If only one sequence is required, then setting SEED to unity is always a good choice. if there are multiple sets of sequences required, then it will depend on whehther they are to be generated serially or in parallel. If serially, then the output SEED can be used as the input to the next subroutine call. If in parallel, then seeding each set with consecutive integers, 1,2,3 &c. is an ideal solution. It is certainly difficult to see why one would ever want to surprise oneself by using a lottery scheme such as the system clock. The seeds, like the algorithms, should be reproducible.