2009/9/1 Carlo de Falco <address@hidden>:
Also, what does the code
[R, p, q] = chol(A);
nnz(R)
work for Octave and Matlab?
I tried this in Octave, after 30 min it did not finish yet...
I will only be able to try it on Matlab tomorrow.
If so what is the value of NNZ of the factorization in both cases.
I killed the Octave after it had been running more than one hour and
produced no result.
In Matlab it ran in less than a second and the result was:
[R,p,q]=chol(A);
nnz (R)
ans =
1368019
issparse (R)
ans =
1
nnz(R)/prod(size(A))
ans =
7.035863106552923e-03