I’m afraid I’m not familiar with the working of the Arpack solver so I can’t be
of much more help to you. As you’ve pointed out, it looks like there may be
some open questions that correlate with the questions you’ve asked. Maybe
someone who actually uses, or has used, this solver might be able
On 9/25/20 4:15 PM, Xuefeng Li wrote:
For step-26, because system_rhs depends on time and time_step, we need to
assemble system_rhs in the loop. We therefore
need to call apply_boundary_values() inside the loop. Here is my question. *If
system_matrix were independent of time and time_step*
*(s
On 9/26/20 6:21 AM, 'Alexander Greiner' via deal.II User Group wrote:
thank you for your response. Unfortunately, I am still receiving the 'same'
error message. This time:
Error: ProcessError: Command exited with status 2: 'make' '-j2'
Are there any other suggestions what I could try?
The re
Hi Jean,
I need a few more clarifications. Sorry to bother you again.
In my code, when I am using the argument - "smallest_magnitude" for the
type of eigenvalue, I am getting a large eigenvalue than when I am using
the argument "largest_eigenvalue". I looked at some of the previous
discussions
Hi Jean,
Thanks a lot for your detailed answer. Using this idea, I was able to solve
the standard eigenvalue problem.
Thanks again!
Animesh
On Saturday, September 26, 2020 at 1:49:10 AM UTC+5:30 Jean-Paul Pelteret
wrote:
> Hi Animesh,
>
> I’m glad to hear that you’ve gotten Arpack working, a
Hi Konrad,
I have the following suggestion. You can use
(1) https://www.dealii.org/current/doxygen/deal.II/p4est__wrappers_8cc.html
check *vertices_with_ghost_neighbors*.
(2)*p4est_search_local *check link
https://github.com/cburstedde/p4est/blob/master/src/p4est_search.h an
Dear all,
I finally had time to go back to my code. Quick problem summary: I am
currently working on a semi-Lagrangian method for an advection-diffusion
equation with a multiscale method that I designed for advection dominated
processes. During runtime I must evaluate the (known) multiscale
FE
