Nuitka makes plus and minus much slower

I’ve tried to compile a performance test using nuitka 0.6.13rc2 in order to again investigate in what extent can Nuitka speed up a python program. It showed Nuitka made the plus and minus operation 15%~20% slower than before, but Nuitka also speed up multiply operation about 60% that’s incredible! Besides, I’m also curious about using which compiler would make program faster msvc or mingw64?

Platform: Windows CPU: Ryzen7 1700 RAM: DDR4-3200*2 Python: 3.8.7 (x64) Nuitka: 0.6.13rc2

Before:

Compiler command (msvc): nuitka --msvc=MSVC --windows-disable-console --standalone --show-progress --output-dir=C:\Users\home\Desktop\1 C:\Users\home\PycharmProjects\speedtest\venv\main.py

Compiler command (mingw64): nuitka --mingw64 --windows-disable-console --standalone --show-progress --output-dir=C:\Users\home\Desktop\1 C:\Users\home\PycharmProjects\speedtest\venv\main.py

Code:

import time
import os

def plus():
    a = 0
    for x in range(100000000):
        a += 1

def minus():
    a = 100000000
    for x in range(100000000):
        a -= 1

def multiply():
    a = 1
    for x in range(100000000):
        a *= 1.00000003

def divide():
    a = 1000000000
    for x in range(100000000):
        a /= 1.00000003

if __name__ == '__main__':
    s = time.time()
    plus()
    e = time.time()
    print('Plus:',round(100000000/(e-s)/1000000,2),'M/s')
    s = time.time()
    minus()
    e = time.time()
    print('Minus:',round(100000000/(e-s)/1000000,2),'M/s')
    s = time.time()
    multiply()
    e = time.time()
    print('Multiply:',round(100000000/(e-s)/1000000,2),'M/s')
    s = time.time()
    divide()
    e = time.time()
    print('Divide:',round(100000000/(e-s)/1000000,2),'M/s')
    os.system('pause')

[kayhayen]

Part of the 0.6.13 release.

Appyling the lessons learned to binary operations for consistency also, is for 0.6.14. I will keep this open, because I want to work on the other things mentioned in that cycle potentially too.

[kayhayen]

The improvement for 3.9 makes this about 20% faster. For 0.6.16 we will see what Nuitka Python can do. With static linking rather than DLL linkage, I expect a huge gain again.