sum = __sec_reduce_add(a[:][:]); //sum across the whole array 'a'
sum_of_column[:]=__sec_reduce_add(a[:][:]); //sum across the column of 'a'
Actually, when I tested the second statement, the sum_of_column got always the sum across the whole array of a, no matter the rank of sum_of_column.
For a given execution context of rank m and a reduction array section argument with rank n, where n>m, it is the last n-m ranks of the array section argument who should be reduced, right? What went wrong?
Thank you for your help!