Calculate lsqr of two arrays on GPU

2 visualizaciones (últimos 30 días)
Mantas Vaitonis
Mantas Vaitonis el 19 de Jul. de 2018
Respondida: Joss Knight el 21 de Jul. de 2018
Hello,
Is there way to calculate lsqr of two arrays, I mean for each columns of arrays respectively. If a (NxM) and b(NxM) are gpuArrays then:
c=lsqr(a(:,1),b(:,1));
This works with no problem. Is there a way to do it on whole arrays? I know that it could be done with for loops, but it becomes bottleneck in my code.

Respuesta aceptada

Joss Knight
Joss Knight el 21 de Jul. de 2018
The least squares solution to a system of linear equations of one variable is pretty simple to work out, so you shouldn't really need any fancy linear algebra. I haven't actually checked this in MATLAB, but by my reckoning all you need is
c = sum(a .* b) ./ sum(a .* a);

Más respuestas (0)

Categorías

Más información sobre Migrate GUIDE Apps en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

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

Start Hunting!

Translated by