from multiprocessing import Process
import numpy as np
import os

def burn():
    a = np.random.rand(2000, 2000)
    b = np.random.rand(2000, 2000)

    while True:
        # 浮点 + SIMD + 内存访问
        np.dot(a, b)

if __name__ == "__main__":
    procs = []
    for _ in range(os.cpu_count()):
        p = Process(target=burn)
        p.start()
        procs.append(p)

    for p in procs:
        p.join()