[petsc-users] SNES error

Thu May 4 08:09:10 CDT 2017

OK, that makes sense, it fails when my velocity grid gets not tiny.

I can use tine velocity grids for now.

On Tue, May 2, 2017 at 11:18 AM, Matthew Knepley <knepley at gmail.com> wrote:

> On Tue, May 2, 2017 at 10:10 AM, Mark Adams <mfadams at lbl.gov> wrote:
>
>> /Users/markadams/Codes/petsc/arch-macosx-gnu-O/bin/mpiexec -n 1 ./vml
>> -v_coord_cylinder -x_dm_refine 2 -v_dm_refine 2 -snes_rtol 1.e-6 -snes_stol
>> 1.e-6 -ts_type cn -snes_fd -pc_type lu -ksp_type preonly
>> -x_petscspace_order 1 -x_petscspace_poly_tensor -v_petscspace_order 1
>> -v_petscspace_poly_tensor -ts_dt .1 -ts_max_steps 10 -ts_final_time 1e10
>> -verbose 3 -num_species 1 -snes_monitor -masses 1,2,4 -thermal_temps
>> 30,30,30  -domainv_lo -2,-2 -domainv_hi 2,2 -domainx_lo -12,-12 -domainx_hi
>> 12,12 -E 0,0 -blobx_radius 2 -x_dm_view hdf5:x.h5 -x_vec_view
>> hdf5:x.h5::append -v_dm_view hdf5:v.h5 -v_vec_view hdf5:v.h5::append
>> -x_pre_dm_view hdf5:prex.h5 -x_pre_vec_view hdf5:prex.h5::append
>> -snes_converged_reason -snes_linesearch_monitor -ts_adapt_monitor
>> main call SetupXDiscretization
>> main call SetInitialConditionDomain
>>                 VMLViewX DMGetOutputSequenceNumber=-1,
>> cmd_str=-x_pre_vec_view
>>   0) species 0: charge density= -2.3940791757186e+00, z-momentum=
>>  5.9851979392559e-01, energy=  3.2314073646197e-01, thermal-flux=
>>  2.4419137539877e-01
>>           0) Normalized: charge density= -2.3940791757186e+00, z
>> momentum=  5.9851979392559e-01, energy=  3.2314073646197e-01, thermal flux=
>>  2.4419137539877e-01, local: 64 X cells, 81 X vertices
>>                 VMLViewX DMGetOutputSequenceNumber=0, cmd_str=(null)
>>         VMLViewV DMGetOutputSequenceNumber=-1
>>     0 SNES Function norm 4.097052680599e+00
>>     1 SNES Function norm 1.213148652908e-09
>>   Nonlinear solve did not converge due to DIVERGED_FUNCTION_COUNT
>> iterations 1
>>
>
> Neat! Mark, I think this has to do with you calling SNESEvaluateFunc()
> inside another one. We limit the number of function evaluations
> to 10,000 by default, mostly to corral line searches. I think you hit
> this, and thus need to up the count.
>
>   Thanks,
>
>      Matt
>
>
>>       TSAdapt none step   0 stage rejected t=0          + 1.000e-01,
>> nonlinear solve failures 1 greater than current TS allowed
>> [0]PETSC ERROR: --------------------- Error Message
>> --------------------------------------------------------------
>> [0]PETSC ERROR:
>> [0]PETSC ERROR: TSStep has failed due to DIVERGED_NONLINEAR_SOLVE,
>> increase -ts_max_snes_failures or make negative to attempt recovery
>> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
>> for trouble shooting.
>> [0]PETSC ERROR: Petsc Development GIT revision: v3.7.6-3659-g699918129c
>>  GIT Date: 2017-04-26 08:18:35 -0400
>> [0]PETSC ERROR: ./vml on a arch-macosx-gnu-O named MarksMac-5.local by
>> markadams Tue May  2 11:04:02 2017
>> [0]PETSC ERROR: Configure options --with-cc=clang --with-cc++=clang++
>> COPTFLAGS="-O3 -g -mavx2" CXXOPTFLAGS="-O3 -g -mavx2" FOPTFLAGS="-O3 -g
>> -mavx2" --download-mpich=1 --download-parmetis=1 --download-metis=1
>> --download-hypre=1 --download-ml=1 --download-triangle=1
>> --download-ctetgen=1 --download-p4est=1 --with-x=0 --download-superlu_dist
>> --download-superlu --download-ctetgen --with-debugging=0 --download-hdf5=1
>> PETSC_ARCH=arch-macosx-gnu-O --download-chaco --with-viewfromoptions=1
>>
>>
>> On Mon, May 1, 2017 at 10:25 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>>
>>>
>>>   and
>>>
>>>   -snes_linesearch_monitor
>>>   -ts_adapt_monitor
>>>
>>>
>>> > On May 1, 2017, at 7:51 PM, Matthew Knepley <knepley at gmail.com> wrote:
>>> >
>>> > Run with -snes_converged_reason.
>>> >
>>> >    Matt
>>> >
>>> > On Mon, May 1, 2017 at 7:14 PM, Mark Adams <mfadams at lbl.gov> wrote:
>>> > I get this SNES failure and I don't understand what the problem is.
>>> The rtol is 1.e-6 and the first iteration reduces the residual by 9 orders
>>> of magnitude. Yet, TS is not satisfied. What is going on here?
>>> >
>>> > mpiexec -n 1 ./vml -v_coord_cylinder -x_dm_refine 2 -v_dm_refine 2
>>> -snes_rtol 1.e-6 -snes_stol 1.e-6 -ts_type cn -snes_fd -pc_type lu
>>> -ksp_type preonly -x_petscspace_order 1 -x_petscspace_poly_tensor
>>> -v_petscspace_order 1 -v_petscspace_poly_tensor -ts_dt .1 -ts_max_steps 10
>>> -ts_final_time 1e10 -verbose 3 -num_species 1 -snes_monitor -masses 1,2,4
>>> -thermal_temps 30,30,30  -domainv_lo -2,-2 -domainv_hi 2,2 -domainx_lo
>>> -12,-12 -domainx_hi 12,12 -E 0,0 -blobx_radius 2 -x_dm_view hdf5:x.h5
>>> -x_vec_view hdf5:x.h5::append -v_dm_view hdf5:v.h5 -v_vec_view
>>> hdf5:v.h5::append -x_pre_dm_view hdf5:prex.h5 -x_pre_vec_view
>>> hdf5:prex.h5::append
>>> >  ....
>>> >
>>> >    0 SNES Function norm 4.097052680599e+00
>>> >     1 SNES Function norm 1.213148652908e-09
>>> > [0]PETSC ERROR: --------------------- Error Message
>>> --------------------------------------------------------------
>>> > [0]PETSC ERROR:
>>> > [0]PETSC ERROR: TSStep has failed due to DIVERGED_NONLINEAR_SOLVE,
>>> increase -ts_max_snes_failures or make negative to attempt recovery
>>> > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/d
>>> ocumentation/faq.html for trouble shooting.
>>> > [0]PETSC ERROR: Petsc Development GIT revision:
>>> v3.7.6-3659-g699918129c  GIT Date: 2017-04-26 08:18:35 -0400
>>> > [0]PETSC ERROR: ./vml on a arch-macosx-gnu-O named MarksMac-5.local by
>>> markadams Mon May  1 19:21:32 2017
>>> > [0]PETSC ERROR: Configure options --with-cc=clang --with-cc++=clang++
>>> COPTFLAGS="-O3 -g -mavx2" CXXOPTFLAGS="-O3 -g -mavx2" FOPTFLAGS="-O3 -g
>>> -mavx2" --download-mpich=1 --download-parmetis=1 --download-metis=1
>>> --download-hypre=1 --download-ml=1 --download-triangle=1
>>> --download-ctetgen=1 --download-p4est=1 --with-x=0 --download-superlu_dist
>>> --download-superlu --download-ctetgen --with-debugging=0 --download-hdf5=1
>>> PETSC_ARCH=arch-macosx-gnu-O --download-chaco --with-viewfromoptions=1
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> > 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
>>>
>>>
>>
>
>
> --
> 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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