Clear Filters
Clear Filters

Use MATLAB Coder to convert matlab code to mex without using multi-threading

5 views (last 30 days)
My code is as follows
function all_Spins = simulate_particles(num_particles, num_steps, all_Spins, SpinLocOri, Gamma, magnetic_field, GdAmp, StepT, spherePositions, sphereRadii, Lx_intra, Ly_intra, Lz_intra, penetration, Lx_extra, Ly_extra, Lz_extra)
parfor mun = 1:num_particles
particle = all_Spins(mun, :);
particle = simulate_particle_motion(num_steps, particle, SpinLocOri, Gamma, magnetic_field, GdAmp, StepT, spherePositions, sphereRadii, mun, Lx_intra, Ly_intra, Lz_intra, penetration, Lx_extra, Ly_extra, Lz_extra);
all_Spins(mun, :) = particle;
end
end
After using MATLAB Coder to convert to mex, I found that multi-threading was not used and my cpu was idle.

Answers (2)

Infinite_king
Infinite_king on 26 Mar 2024
Edited: Infinite_king on 26 Mar 2024
Hi 梅花,
By default, MATLAB Coder generates code in which the parfor loop body runs in parallel using OpenMP.
In the code generation configuration object, you can enable 'OpenMP' as follows,
cfg = coder.config('mex');
cfg.EnableOpenMP = true;
% generate code
codegen myFunction -config cfg
For more information, refer the following resources,
Hope this is helpful.

Bruno Luong
Bruno Luong on 26 Mar 2024

Categories

Find more on Write C Functions Callable from MATLAB (MEX Files) in Help Center and File Exchange

Tags

Products


Release

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!