import numpy as np
import time

if __name__ == '__main__':

    l = []
    while True:
        start = time.perf_counter()
        a, b = np.random.rand(10240, 1024), np.random.rand(10240, 1024)
        l.append([a,b])
        c = a * b
        print(f'init time: {time.perf_counter() - start}')