关于Cython,Python,C/C++的运行速度的对比
测试环境:
处理器: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx 2.10 GHz
机带: RAM 8.00 GB
系统:Windows 10 21H2 (19044.1499)
(Cython 编译的指令为:python setup.py build_ext --inplace
测试结果如下
使用的语言 | 代码行数 | 运行线程数 | 句柄数 | 运行时间 |
---|---|---|---|---|
C/C++ | 46 | 2 | 60~62 | UNKNOWN |
Python | 20 | 1 | 78 | UNKNOWN |
Cython | 4559(.c)+(UNKNOWN).pyd+1(import ***) | UNKNOWN | UNKNOWN | UNKNOWN |
下面给出测试的代码
C++:
#include<time.h>
#include<iostream>
#include<Windows.h>
#include<thread>
#pragma comment(lib,"winmm.lib")
int a, b, c, d;
void detect(void*);
int main()
{
long long int sum = 0;
a = 0, b = 0, c = 0, d = 0;
_beginthread(detect, NULL, NULL);
DWORD t1, t2;
t1 = timeGetTime();
for (a = 0; a < 1000; a++)
{
for (b = 0; b < 1000; b++)
{
for (c = 0; c < 1000; c++)
{
for (d = 0; d < 1000; d++)
{
sum = a + b + c + d;
}
}
}
}
t2 = timeGetTime();
std::cout << "time used:" << t2 - t1 << std::endl;
system("pause");
}
void detect(void*)
{
while (1)
{
if (a == 1000 && b == 1000 && c == 1000 && d == 1000)
{
_endthread();
}
else
{
std::cout << "a=" << a << "b=" << b << "c=" << c << "d=" << d << "\n";
system("cls");
}
}
}
下面给出Python的代码
import time
import os
a=0
b=0
c=0
d=0
def main():
e=0
t1=time.time()
for a in range(0,1000):
for b in range(0,1000):
for c in range(0,1000):
for d in range(0,1000):
e=a+b+c+d
os.system('cls')
print('a=', a, 'b=', b, 'c=', c, 'd=', d)
t2=time.time()
print("time used:",t2-t1)
if __name__=='__main__':
main()
Cython给出的代码太复杂了,这里就不写出来了