| Thanks for looking into this. I am running on Mac OS with octave installed through macports.
Following are the outputs on my machine.
octave:4> eigs(m1, m0) error: __eigs__: eigs: error -8 in dnaupd error: called from eigs at line 285 column 18 octave:4> version ans = 4.4.1 octave:5> which eigs 'eigs' is a function from the file /opt/local/share/octave/4.4.1/m/sparse/eigs.m octave:6>
Thanks, Manav On Sep 7, 2018, at 8:13 AM, Juan Pablo Carbajal < address@hidden> wrote:
Hi, I can't reproduce in 4.4.0, which Octave version are you using? What OS? eigs(m1,m0)
ans = 0.00032 - 2672312.38464i 0.00032 + 2672312.38464i 0.00004 - 2639857.10699i 0.00004 + 2639857.10699i 0.00010 + 2587664.34543i 0.00010 - 2587664.34543i version
ans = 4.4.0 which eigs
'eigs' is a function from the file /usr/local/share/octave/4.4.0/m/sparse/eigs.m On Fri, Sep 7, 2018 at 3:02 PM Manav Bhatia < address@hidden> wrote:
Hi,
I have a set of matrices, M0 and M1 (attached), obtained from numerical discretization of a beam problem.
I am attempting to solve the eigenproblem M1 x = lambda M0 x .
Computing this with the following works fine:
m0 = load(‘M0.txt’); m1 = load(‘M1.txt’);
eig( m1, m0)
However, using eigs( m1, m0) throws the following error:
error: __eigs__: eigs: error -8 in dnaupd
error: called from
eigs at line 285 column 18
I am not sure what could be causing this. Any guidance will be appreciated.
Thanks,
Manav
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