encode_datatype(origin_datatype)));
retval = win->accumulate( origin_addr, origin_count, origin_datatype, target_rank, target_disp, target_count,
target_datatype, op);
encode_datatype(origin_datatype)));
retval = win->accumulate( origin_addr, origin_count, origin_datatype, target_rank, target_disp, target_count,
target_datatype, op);