[lugia@arpa-castle Fortran]$ gfortran 1-runge.f -o 1-runge [lugia@arpa-castle Fortran]$ time ./1-runge real 0m0.936s user 0m0.880s sys 0m0.022s [lugia@arpa-castle Fortran]$ gfortran 1-runge.f -o 1-runge [lugia@arpa-castle Fortran]$ time ./1-runge real 0m0.640s user 0m0.599s sys 0m0.024s
やっぱり 70000 回ループするとループの中身の書き方が影響してくるな。