Each process only has subgrid. Performance and Load Balancing Other approaches Data distribution Domain decomposition 17. All processors have entire grid. Processors work on sub-grids. Processors broadcast entire sub-grid to all other processors.
All processors have only a sub-grid.
Processors work on sub-grid. Only boundary data is transferred to neighbors. You have to keep track of your neighbors 18. Domain Decomposition 19. All processors have entire T array.