tConvergedReason() in your TSPostStep()
when certain criteria is met.
Hong
> Best Regards,
> Moritz
>
>
> -Ursprüngliche Nachricht-
> Von: Zhang, Hong
> Gesendet: Freitag, 14. Dezember 2018 17:13
> An: Huck, Moritz
> Cc: petsc-users
> Betreff: Re: [petsc-u
oints.
Can I get these without setting explicit end times?
Best Regards,
Moritz
-Ursprüngliche Nachricht-
Von: Zhang, Hong
Gesendet: Freitag, 14. Dezember 2018 17:13
An: Huck, Moritz
Cc: petsc-users
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
> O
I suspect that the
jump was caused by these restart steps.
Hong
> -Ursprüngliche Nachricht-
> Von: petsc-users Im Auftrag von
> Moritz.Huck--- via petsc-users
> Gesendet: Freitag, 14. Dezember 2018 12:06
> An: Emil Constantinescu ; Zhang, Hong
>
> Cc: petsc-users
&g
lution "jumps" after setting timestep
In this example yes.
-Ursprüngliche Nachricht-
Von: Emil Constantinescu
Gesendet: Donnerstag, 13. Dezember 2018 20:21
An: Zhang, Hong ; Huck, Moritz
Cc: petsc-users
Betreff: Re: [petsc-users] Solution "jumps" after setting ti
In this example yes.
-Ursprüngliche Nachricht-
Von: Emil Constantinescu
Gesendet: Donnerstag, 13. Dezember 2018 20:21
An: Zhang, Hong ; Huck, Moritz
Cc: petsc-users
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
Okay, so you start your integr
ck on track"
>> TSAdapt basic arkimex 0:4 step 19 accepted t=4.90058 +
>> 4.540e+00 dt=4.649e+00 wlte=0.596 wltea= -1 wlter= -1
>> *Von:*Zhang, Hong mailto:hongzh...@anl.gov>>
>> *Gesendet:*Donnerstag, 13. Dezember 2018 17:39
>> *An:*Huck, Moritz
17:39
An: Huck, Moritz
mailto:moritz.h...@isea.rwth-aachen.de>>
Cc: petsc-users@mcs.anl.gov<mailto:petsc-users@mcs.anl.gov>
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
Can you show the outputs of -ts_monitor for both cases (one with oscillations
and one w
On 12/13/18 9:48 AM, Moritz.Huck--- via petsc-users wrote:
> If I set the next target time (in tssolve) to be tlast+1e-3 it looks
> like this:
How do you set the "next target time"? Are you using TSSetTimestep at
some discrete time points? If not then the adaptor will adjust it or
even ignore i
On 12/13/18 9:48 AM, Moritz.Huck--- via petsc-users wrote:
> If I set the next target time (in tssolve) to be tlast+1e-3 it looks
> like this:
How do you set the "next target time"? Are you using TSSetTimestep at
some discrete time points? If not then the adaptor will adjust it or
even ignore i
tsc-users@mcs.anl.gov>
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
Can you please add command line options -ts_monitor -snes_monitor and show us
the outputs?
Thanks,
Hong (Mr.)
On Nov 4, 2018, at 6:19 AM, Moritz.Huck--- via petsc-users
mailto:petsc-users@
: Re: [petsc-users] Solution "jumps" after setting timestep
Can you please add command line options -ts_monitor -snes_monitor and show us
the outputs?
Thanks,
Hong (Mr.)
On Nov 4, 2018, at 6:19 AM, Moritz.Huck--- via petsc-users
mailto:petsc-users@mcs.anl.gov> > wr
r 2018 15:43
An: Huck, Moritz
mailto:moritz.h...@isea.rwth-aachen.de>>;
petsc-users@mcs.anl.gov<mailto:petsc-users@mcs.anl.gov>
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
On 11/3/18 4:56 AM, Moritz.Huck--- via petsc-users wrote:
Hi,
I am using the IME
> On Dec 12, 2018, at 4:09 AM, Moritz.Huck--- via petsc-users
> wrote:
>
> Hi,
> sorry I missed the last response.
>
> The system should be index 1 (being not a 100% certain I calculated
> everything correct, it can be at most of index 2).
> I cannot show the code easily, the code is quite
Hi,
sorry I missed the last response.
The system should be index 1 (being not a 100% certain I calculated
everything correct, it can be at most of index 2).
I cannot show the code easily, the code is quite complex (the system arises
from a FEM discretization).
As additional information the s
: Constantinescu, Emil M.
Gesendet: Samstag, 3. November 2018 15:43
An: Huck, Moritz ; petsc-users@mcs.anl.gov
Betreff: Re: [petsc-users] Solution "jumps" after setting timestep
On 11/3/18 4:56 AM, Moritz.Huck--- via petsc-users wrote:
> Hi,
>
> I am using the IMEX Runge Kutta t
What is the index of your DAE? Can you show us code that exhibits this
behavior?
"Moritz.Huck--- via petsc-users" writes:
> Hi,
>
> I am using the IMEX Runge Kutta to solve an implicit DAE (G=0).
>
> When I manually set the time step (TSSetTimestep) my solution jumps.
>
> If I go from a stead
On 11/3/18 4:56 AM, Moritz.Huck--- via petsc-users wrote:
> Hi,
>
> I am using the IMEX Runge Kutta to solve an implicit DAE (G=0).
>
> When I manually set the time step (TSSetTimestep) my solution jumps.
When you don't set the time step, does it still oscillates? If not, can
you check if it os
Hi,
I am using the IMEX Runge Kutta to solve an implicit DAE (G=0).
When I manually set the time step (TSSetTimestep) my solution jumps.
If I go from a steady state to the same state, it oscilates a few time and
comes back to the steady solution.
Can this be prevented?
Thank you,
Mori
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