Hello Again,
Yes I would like to find for the initial 10% and 20% of the eigenpairs.
But in addition to this,I also want to check for the full spectrum.
So, how shall I proceed with it?
Thank You.
Regards,
savneet
Le 25/04/2018 à 11:33, Matthew Knepley a écrit :
On Wed, Apr 25, 2018 at 5:10 AM, Savneet Kaur <[email protected]
<mailto:[email protected]>> wrote:
Hello,
Warm Regards
I am Savneet Kaur, a master student at University Paris Saclay and
currently pursuing an internship at CEA Saclay (France).
I have recently started to understand the slepc and petsc solvers,
by taking up the tutorials for eigenvalue problems. In my
internship work I have to develop a laplacian matrix from a given
transition rate matrix and solve it using SLEPC and PETSC and to
evaluate the lowest eigenvalue.
I was wondering if I could get some information. I need to
diagonalize a 2D Laplacian matrix. And writing a code in C and
diagonalizing it is easy. But I am not getting it how to
accommodate with the SLEPC Program. Am i suppose to use any
packages or it will is done by a loop? Or I need to read some
other manual to understand how does it work. Please kindly let me
know.
I would just like to clarify some terminology. "Diagonalize" would
usually mean find all eigenvalues and eigenvectors.
Is this what you mean? Often, SLEPc users want only a portion of the
spectrum since the matrices are enormous.
Thanks,
Matt
The diagonalizing a matrix will be preliminary step of my work.
I will be highly obliged to the the team, if I could get help.
Hoping for a favorable response from your side.
Thank you for the time and consideration.
Sincerely,
*Savneet Kaur*
*Intern at DEN/DANS/DMN/SRMP*
*CEA - Centre de Saclay ǀ Bâtiment 520
*
*91191 Gif-sur-Yvette Cedex*
*France*
*Tel: +33 (0) 666 749 000*
*Email: [email protected] <mailto:[email protected]>
*
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/%7Emk51/>
