0  in cpl ===  7  in global
 my comp_id= 3
  sum of local ranks in cpl is  0
  sum of global ranks in cpl is  7
  sum of global ranks in world is  36
 I am cpl 0 (g=7), recv from ccm 1 (g=3)
 I am cpl 0, expect a2c(1)=100
 cpl 0 gets a2c(1)= 100
 I am cpl 0 (g=7), send to pop 5 (g=8)
 cpl 0 sent to pop 5 successfully
 myProc_joined= 0
  sum of joined ranks in cpl_pop is  21