[Scilab-users] Matlab vs Scilab perf

[Stéphane Mottelet]

Hello,

Can you precise your Scilab version ? 5.5.2 ? 6.0.0 ? Or another one...

S.

Le 02/03/2017 à 16:29, Michael Benguigui a écrit :
> Hi all,
> As a Scilab user, I am currently fighting to reach Matlab 
> performance..My current scilab program takes 4x more than my matlab's 
> vesion. Here are some instructions requiring some optimizations.. If 
> you have an idea... thanks a lot!
>
> All times are cumulative times after the execution (iterations)
> I used the Matlab and Scilab profilers
> tooth_psi_angle is a 70000x4 2D matrix of real numbers
> tool.forces.cutting_forces_teeth_TCS is a 72000x4x3 matrix of real numbers
> process.fz is a scalar
> tool.kappa is a scalar
>
> if tool_angle(i) < tool.pitch_angle then
>      h_total(i) = process.fz * sin(tooth_psi_angle(i,tooth)) * 
> sin(tool.kappa);
>
> => Matlab:<0.01s  vs Scilab 4.8s
>
> ROT_LCS_TCS =[-cos(tooth_psi_angle(i,tooth)) 
> -sin(tool.kappa)*sin(tooth_psi_angle(i,tooth)) 
> -cos(tool.kappa)*sin(tooth_psi_angle(i,tooth)); 
> sin(tooth_psi_angle(i,tooth)) 
> -sin(tool.kappa)*cos(tooth_psi_angle(i,tooth)) 
> -cos(tool.kappa)*cos(tooth_psi_angle(i,tooth)); 0 cos(tool.kappa) 
> -sin(tool.kappa)]; // result is a 3x3 matrix
>
> => Matlab:0.67s  vs Scilab 4s
>
> tool.forces.cutting_forces_teeth_TCS(i,tooth,:) = ROT_LCS_TCS*[ft;fr;fa];
>
> => Matlab:0.55s  vs Scilab 1.3s
>
> Regards
> Michael
>
>
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-- 
Département de Génie Informatique
EA 4297 Transformations Intégrées de la Matière Renouvelable
Université de Technologie de Compiègne -  CS 60319
60203 Compiègne cedex

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