PROCESSORS_MAP
BEGIN
Multi_Instance_Start
POP1   0  2
POP2   3  5
POP3   6  9 
Multi_Instance_End
END 
ADD any comments in this line and below.
  for multiple instances in single executable, 
  include component info between Multi_Instance_Start
  and Multi_Instance_End, list the number of components (optional),
  and each instance's relative processor_id in that executable world.
  Up to 5 strings could also be attached in the end to pass input
  and output file names and some other info.  Processor overlap is
  allowed within each multi-component executable but NOT within each
  multi-instance executable.