MATLAB: Similar matrix multiplication speed up

matrix multiplication

Hi,

I need to multiply many times matrices of the same type. Is there a way to speed this up:

M1^m*M2^m*...

where Mi = expm(alpha(i)*P) P being a matrix (hermitian). Already all Mi are precalculated and the main calculation cost of my problem now is the long matrix multiplication through all i.

Thanks

Best Answer

Try MTIMESX - Fast Matrix Multiply with Multi-Dimensional Support by James Tursa

Related Solutions

MATLAB: Multiplication of a matrix element wise with a polynomial

syms s
L=eye(2,4) 
p=s-3
out=L*p

MATLAB: Extracting square matrices from another matrix

% fake input data:
t = 0.3;
A = rand(7,273);
%
C = mat2cell(A,7,7*ones(1,39));
Z = expm(C{1}*t);
for k = 2:39
    Z = Z*expm(C{k}*t);
end

Best Answer

Related Solutions

MATLAB: Multiplication of a matrix element wise with a polynomial

MATLAB: Extracting square matrices from another matrix

Related Question