[petsc-users] snes_type aspin error

[Xiangdong]

The snesview output says "SNES has not been set up so information may be
incomplete" as well as "Nonlinear Additive Schwarz: total subdomain blocks
= -2". Why are the total subdomain blocks negative?

Thanks.

Xiangdong

On Mon, Jun 20, 2016 at 1:49 PM, Xiangdong <epscodes at gmail.com> wrote:

> Hi Matt,
>
> Here is the output of snesview before snessolve.
>
> SNES Object: 2 MPI processes
>   type: newtonls
>   SNES has not been set up so information may be incomplete
>   maximum iterations=10, maximum function evaluations=10000
>   tolerances: relative=0.001, absolute=1e-50, solution=1e-08
>   total number of linear solver iterations=0
>   total number of function evaluations=0
>   norm schedule ALWAYS
>   SNESLineSearch Object:   2 MPI processes
>     type: basic
>     maxstep=1.000000e+08, minlambda=1.000000e-12
>     tolerances: relative=1.000000e-08, absolute=1.000000e-15,
> lambda=1.000000e-08
>     maximum iterations=40
>   SNES Object:  (npc_)   2 MPI processes
>     type: nasm
>     SNES has not been set up so information may be incomplete
>       Nonlinear Additive Schwarz: total subdomain blocks = -2
>     maximum iterations=10000, maximum function evaluations=10000
>     tolerances: relative=1e-08, absolute=1e-50, solution=1e-08
>     total number of linear solver iterations=0
>     total number of function evaluations=0
>     norm schedule ALWAYS
> use the results from previous step as initial guess.
> the option for switch linesearch method if Newton fails is OFF;
> SNES Object: 2 MPI processes
>   type: newtonls
>   SNES has not been set up so information may be incomplete
>   maximum iterations=10, maximum function evaluations=10000
>   tolerances: relative=0.001, absolute=1e-50, solution=1e-08
>   total number of linear solver iterations=0
>   total number of function evaluations=0
>   norm schedule ALWAYS
>   SNESLineSearch Object:   2 MPI processes
>     type: basic
>     maxstep=1.000000e+08, minlambda=1.000000e-12
>     tolerances: relative=1.000000e-08, absolute=1.000000e-15,
> lambda=1.000000e-08
>     maximum iterations=40
>   SNES Object:  (npc_)   2 MPI processes
>     type: nasm
>     SNES has not been set up so information may be incomplete
>       Nonlinear Additive Schwarz: total subdomain blocks = -2
>     maximum iterations=10000, maximum function evaluations=10000
>     tolerances: relative=1e-08, absolute=1e-50, solution=1e-08
>     total number of linear solver iterations=0
>     total number of function evaluations=0
>     norm schedule ALWAYS
>
> Thanks.
>
> Xiangdong
>
> On Mon, Jun 20, 2016 at 12:54 PM, Matthew Knepley <knepley at gmail.com>
> wrote:
>
>> Can you give us the output of -snes_view? It would help to see how you
>> are setting everything up, or maybe
>> run SNESView() before SNESSolve()?
>>
>>    Matt
>>
>> On Mon, Jun 20, 2016 at 9:32 AM, Xiangdong <epscodes at gmail.com> wrote:
>>
>>> Hello everyone,
>>>
>>> I am trying different snes_type in petsc. The newtonls and nasm all
>>> works well. However, when I switched to aspin, I got the error like "No
>>> support for this operation for this object type" "Mat type shell". I am
>>> using the dmda 3d in petsc 3.6.3. The full error messages are below.
>>>
>>> Any hint for me to fix this? Thanks.
>>>
>>> Best,
>>> Xiangdong
>>>
>>> [0]PETSC ERROR: --------------------- Error Message
>>> --------------------------------------------------------------
>>> [0]PETSC ERROR: No support for this operation for this object type
>>> [0]PETSC ERROR: Mat type shell
>>> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
>>> for trouble shooting.
>>> [0]PETSC ERROR: Petsc Release Version 3.6.3, unknown
>>> [0]PETSC ERROR: #1 MatZeroEntries() line 5404 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/mat/interface/matrix.c
>>> [0]PETSC ERROR: #2 FormJacobianLocal() line 37 in
>>> /home/MyCodes/epscprplus/Jacobian.c
>>> [0]PETSC ERROR: #3 SNESComputeJacobian_DMDA() line 175 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/utils/dmdasnes.c
>>> [0]PETSC ERROR: #4 SNESComputeJacobian() line 2232 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/interface/snes.c
>>> [0]PETSC ERROR: #5 SNESNASMComputeFinalJacobian_Private() line 770 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/impls/nasm/nasm.c
>>> [0]PETSC ERROR: #6 SNESSolve_NASM() line 888 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/impls/nasm/nasm.c
>>> [0]PETSC ERROR: #7 SNESSolve() line 3906 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/interface/snes.c
>>> [0]PETSC ERROR: #8 SNESApplyNPC() line 48 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/interface/snespc.c
>>> [0]PETSC ERROR: #9 SNESSolve_NEWTONLS() line 173 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/impls/ls/ls.c
>>> [0]PETSC ERROR: #10 SNESSolve() line 3906 in
>>> /home/shared/MyLocal_stor/petsc/petsc-dev/src/snes/interface/snes.c
>>> [0]PETSC ERROR: #11 main() line 794 in
>>> /home/MyCodes/epscprplus/twophaseow.c
>>>
>>>
>>
>>
>> --
>> 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
>>
>
>
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