required_argument   42 ompi/tools/mpisync/sync.c             {"output", required_argument, 0, 'o' },
required_argument   43 ompi/tools/mpisync/sync.c             {"alg", required_argument, 0, 'a' },
required_argument   44 ompi/tools/mpisync/sync.c             {"help",   required_argument, 0, 'h' },