Sure, I will add my progress following this email.
Best regards,
On Sun, Aug 16, 2020 at 7:47 PM Wolfgang Bangerth
wrote:
> On 8/16/20 6:38 PM, yuesu jin wrote:
> > Thank you very much! I found step-62 yesterday and I have
> compared the
> > difference between them. I want to write two vers
Dear Dr.Bangerth,
I tried both, first I tried 1e-4*system_rhs.l2_norm(), it failed. Then I
tried with exact precision limits, from 1e-3 to 1e-8, all of them cannot
converge. If I set the precision level as 1e-4, with or without L2 norm it
stopped at step-42 with the residue 0.0113395.
Best rega
On 8/16/20 6:38 PM, yuesu jin wrote:
Thank you very much! I found step-62 yesterday and I have compared the
difference between them. I want to write two versions and compare their CPU
time to get an exact result.
That would be interesting to hear about -- please let us know what you find!
Dear Dr. Bangerth,
Thank you very much! I found step-62 yesterday and I have compared the
difference between them. I want to write two versions and compare their
CPU time to get an exact result.
Best regards,
Yuesu
On Sun, Aug 16, 2020 at 7:19 PM Wolfgang Bangerth
wrote:
> Yuesu,
>
> >I
On 8/14/20 9:20 PM, yuesu jin wrote:
I tried a few levels of the tolerance, 1e-3, 1e-4 ,1e-6 and 1e-8. 1e-3
converged because that is in the same level with the solution. Error occurs
below 1e-4. I have tried the Jacobi preconditioner instead of SSOR in the
single thread CG version, it converg
Yuesu,
I am adding an absorbing boundary condition like step-24 did in the
frequency domain, in which the time derivative gives a complex term. I also
found the complex acoustic wave problem step-29 which splits the complex wave
function into two real parts.
What I want to know is what
>
> Hi again,
it seems my last comment got lost, but I wanted to post it here for others
researching that issue:
I constructed a MWE and found out, that actually solving the system via
GMRES, CG or BiCGstab
using any of the implementations provided by PETSc, Trilinos or the dealii
versions th
