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Óмòµ¥³ÌÐò²¢ÐУ¬µ«Ã»ÓÐЧÂÊ£¬³ÌÐò½á¹¹ºÜ¼òµ¥£¬Çë¸÷λ´óÉñ°ïæ¿´¿´£º PROGRAM parallel_01 USE omp_lib IMPLICIT NONE INTEGER :: i,j,ii REAL, DIMENSION(1:20000000) :: f, g REAL :: k,t1,t2,time CALL omp_set_num_threads(4) k = 0 t1=omp_get_wtime() do ii=1,1000 !Õâ²ãÑ»·ÊÇΪÁËʹ¼ÆËãʱ¼ä³¤Ò»µã£¬·½±ã¹Û²ì²¢ÐÐʱ¼ä !$omp parallel private(k,i) !$omp do DO i = 1, 20000000 f(i) = g(i)+1 k = k + 1 END DO !$omp end do !$omp end parallel !$omp parallel private(k,j) !$omp do DO j = 1, 20000000 g(j) =f(j)+1 k = k + 1 END DO !$omp end do !$omp end parallel enddo !end of ii=1,1000 t2=omp_get_wtime() print*,"cost time:",t2-t1 END PROGRAM ¼ÆËã»úÅäÖÃΪ4ºËµÄ£¬·Ö±ðµ÷ÓÃ2,3,4ºË£¬Êä³öʱ¼ä¼¸ºõÒ»Ñù£¬Ã»Óв¢ÐÐЧÂÊ£¬¼±Çó´óÉñÖ¸µã!!! |
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