n_dofs_cum_sum(0) = 0
n_dofs_cum_sum(i) = n_dofs_cum_sum(i-1)+
local_offset = n_dofs_cum_sum(mpimywid)
INTEGER n_dofs_cum_sum (0:nPx*nPy-1), idx(1)
n_dofs_cum_sum (0) = INT(DoFCount)+1
& n_dofs_cum_sum(mpimywid)
integer n_dofs_cum_sum (0:nPx*nPy-1)