[Trilinos-Users] [EXTERNAL] Replacing ARPACK with Anasazi - Simplest approach?

[Roland Richter]

Hei,

if I want to determine the stability of the system, to my knowledge I
have to calculate all eigenvalues. The amount is equivalent to the size
of the matrix, which in my case is > 30e6 elements.

Furthermore, I want to keep the calculation as general as possible, thus
it is not possible for me to say if the matrix is hermitian or not.

Is there still a possible solution?

Thank you,

regards,

Roland

Am 26.09.19 um 18:26 schrieb Thornquist, Heidi K:
> Hi Roland,
>
> There are a couple more pieces of information necessary to direct you to the appropriate solver:
>
> 1) If you are looking to determine the stability of the system, you are looking for the values crossing from negative to positive, or the rightmost eigenvalues.  Is that correct?  If so, how many eigenvalues are you trying to calculate?  
> 2) Is the eigenproblem Hermitian or non-Hermitian?
>
> Thanks,
> Heidi
>