Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!


  1. Jul 9, 2007 #1
    I'm using ARPACK to find the eigenvalues of a matrix, it works for some of the problems I need it for, but for others, it returns INFO = 3, which means:

    Remark 4 says:

    I have tried increasing NCV, and playing with the values of both NEV and NCV, but no luck.

    Anyone who has worked with ARPACK, and knows how to solve this problem, your help would be greatly appreciated.
  2. jcsd
  3. Jul 12, 2007 #2
    Anyone? I'm kinda stuck here, I can't move on until I get this working, and noone around here seems to know why it's doing it, or how to fix it.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - ARPACK help Date
C/++/# Help with MATLAB code? Feb 9, 2018
What's wrong with my bisection method code? Dec 10, 2017
Help: Convert Matlab to Python code Dec 8, 2017
Solution of Bose Hubbard model using ARPACK Nov 6, 2017