How are parallel with ode45

15 visualizzazioni (ultimi 30 giorni)
omar A.alghafoor
omar A.alghafoor il 12 Nov 2020
Commentato: omar A.alghafoor il 23 Nov 2020
Hi friends. i trying reduce execution time for my code ( system - differential equations ) by using parallel .
what are steps .... thanks in advance .
rows=1024;
cols=1024;
% interval=(rows*cols)/100;
interval=linspace(0,1,rows*cols);
[T,res]=ode45(@odefun,interval,[0.5;.4;.2]);%[0.5;.4;.2]);
% plot(T,res(:,1),T,res(:,2),T,res(:,3))
% legend('X','Y','Z')
k1=res(:,1);
k2=res(:,2);
k3=res(:,3);
function D=odefun(t,X)
x0=X(1);
y0=X(2);
z0=X(3);
a=35;
b=1.3;
c=3;
d=8;
e=10;
f=2;
g=5;
h=0.5;
x1=a*(y0-x0)+b*y0*z0;
y1=-c*x0*z0+d*y0+e*x0;
z1=f*x0*y0-g*z0+h*x0;
D=[x1;y1;z1];
end
  2 Commenti
James Tursa
James Tursa il 12 Nov 2020
Modificato: James Tursa il 12 Nov 2020
Numeric solvers such as ode45( ) rely on calculating the derivatives with the current state. This must be done in a sequential stepping process because the future estimated state at the next step depends on the estimated solution at the current step. You can't run any future steps in parallel because they depend on the estimated solution being known at that future time, and you don't have that.
omar A.alghafoor
omar A.alghafoor il 23 Nov 2020
thank you

Accedi per commentare.

Risposte (1)

Ameer Hamza
Ameer Hamza il 12 Nov 2020
MATLAB's ODE solvers do not support parallel processing capability.

Prodotti


Release

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by