call python function in parfor loop
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I have managed to call python function in matlab. However, I would like to know if it is possible to call python function within a parfor loop? If it is not, is there a method to perform parallel computation in my python function?
5 个评论
Raymond Norris
2022-2-19
Can't see a reason why you couldn't call python from within parfor. I would suggest trying it and reporting back any issue you run into.
Kevin Zhu
2022-2-19
Ive J
2022-2-19
Can you share the snippet as well?
Kevin Zhu
2022-2-20
Takayuki Nagata
2023-6-21
Hi.
I am facing the same problem.
My environment is MATLAB R2023a on Windows 10 with Python 3.8.
I would appreciate it if you could give me some guidance.
My MATLAB script is as follows:
clear all
np = py.importlib.import_module('numpy');
nr=10;
alpha=0.2;
q_sbf = np.loadtxt("xxx.txt");
[v_ic_org,~] = pyrunfile('F_extract_initial_state.py',["v_ic_org","u"],q_sbf=q_sbf);
Z=zeros(size(double(v_ic_org)))';
parfor r=1:nr
v_ic = alpha*randn(size(double(v_ic_org)));
tmp = pyrunfile('F_sim_linear_fwd.py',"sol_lin",q_sbf=q_sbf,v_ic=v_ic);
z = double(tmp);
Z(:,r) = z(:,end);
end
Thank you!
回答（1 个）
Al Danial
2023-7-8
0 个投票
An alternative to parfor is to run the loop in parallel with dask. The function running in parallel, sol_lin(), in your case, can either be sent to the cores on your own computer, or to multiple computers on your network.
https://al.danial.org/posts/parallel_matlab_with_dask/ has examples.
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