[Mpi3-tools] Question about communicator for control variables

[Andreas Kuntze]

Hello all,

in the current MPIT draft, the MPIT_CTRLVAR_WRITE function takes a 
communicator as an argument. If I understood the description correctly, you 
have to pass the communicator returned by MPIT_CTRLVAR_GETINFO. Can someone  
explain to me, for what reason you have to pass it, if you can execute 
collective write operations on one communicator only for each control 
variable?

Thanks,

Andreas