old writing error

[spetruzza]

1. When restructuring box is smaller than per process box in id io mode, then that is wrong
   ./tutorial/single_buffer_idx_write -g 34x34x34 -l 34x34x34 -f X2 -t 1 -v VL

mpirun -n 2 ./tutorial/single_buffer_idx_write -g 8x8x8 -l 8x8x4 -f X2 -t 1 -v VL

mpirun -n 10 ./tutorial/single_buffer_single_variable_read -g 656x290x170 -l 328x58x170 -f ABC -t 0 -v 1