inter processor communication
 

Hello Everyone,

I would like to know where exactly the inter-processor communication takes place. Take for example, in the icoFoam solver:

My wild guess is, it is done :
1. Inside the solve() function ?
2. Inside U.correctBoundaryConditions().

Is this correct ?

On a different note, if I would like to establish another layer of communications on top of the existing send-receives ( I'm thinking of more like a cell to cell communication ), Where do you think, it is more appropriate to place this additional communication layer ?

Many thanks
Dominic