Why matlab.engine for python is so slow?

Question

I'm calling MATLAB Functions from Python via MATLAB Engine for Python , but it is not efficient.

The pure Matlab script runs in 30ms , and the python script in 5.xs .

Is there a reason why? What should I do?

---

The python code:

import matlab.engine,time
start = time.clock()

eng = matlab.engine.start_matlab()
eng.forward


elapsed = (time.clock() - start)
print("Time used:",elapsed)

---

The python script reslut:

('Time used:', 4.879795798557371)

---

The Matlab runtime:

函数名称 | 调用总时间 | 自用时间

forward | 0.029 s | 0.015 s

Answer 1

The call to matlab.engine.start_matlab() starts a MATLAB session, which will obviously take quite some time.

So it is not so much a question of Python being inefficient, but measuring two different things.

Try moving the start = line to just before the eng.forward call and see what results you get.