prefetching (1) 썸네일형 리스트형 array의 연산을 빠르게 하는 방법 import timeit arr = [i for i in range(4000 * 4000)] def slow_sum(): sum = 0 for x in range(4000): for y in range(4000): sum += arr[x + 4000 * y] # print(sum) # 127999992000000 def fast_sum(): sum = 0 for x in range(4000): for y in range(4000): sum += arr[x * 4000 + y] # print(sum) # 127999992000000 timer1 = timeit.Timer('slow_sum()', setup='from __main__ import slow_sum') t1 = timer1.timeit(numb.. 이전 1 다음
