[aspect-devel] Problems running Aspect

[Ian Rose]

Hi Timo,

1) I am using Trilinos 10.4.2
2) I am using the unedited box.prm
3) I have tried it with 32, 16, 8, and 4 processors
4)  Here is an output with box.prm on 4 processors.  This one does not make
it for any time steps...


Number of active cells: 256 (on 5 levels)
Number of degrees of freedom: 3,556 (2,178+289+1,089)

*** Timestep 0:  t=0 seconds
   Solving temperature system... 13 iterations.
   Rebuilding Stokes preconditioner...
   Solving Stokes system...

+---------------------------------------------+------------+------------+
| Total wallclock time elapsed since start    |      25.4s |            |
|                                             |            |            |
| Section                         | no. calls |  wall time | % of total |
+---------------------------------+-----------+------------+------------+
| Assemble Stokes system          |         1 |     0.497s |         2% |
| Assemble temperature system     |         1 |      1.13s |       4.4% |
| Build Stokes preconditioner     |         1 |     0.475s |       1.9% |
| Build temperature preconditioner|         1 |    0.0998s |      0.39% |
| Solve Stokes system             |         1 |      22.1s |        87% |
| Solve temperature system        |         1 |    0.0207s |     0.082% |
| Setup dof systems               |         1 |     0.648s |       2.6% |
+---------------------------------+-----------+------------+------------+


----------------------------------------------------
Exception on processing:
Iterative method reported convergence failure in step 2467 with residual
5.68
Aborting!
----------------------------------------------------
/home/ian.rose/dealii/aspect/lib/aspect:exit(1)


----------------------------------------------------
Exception on processing:
Iterative method reported convergence failure in step 2467 with residual
5.68
Aborting!
----------------------------------------------------
/home/ian.rose/dealii/aspect/lib/aspect:exit(1)


----------------------------------------------------
Exception on processing:
Iterative method reported convergence failure in step 2467 with residual
5.68
Aborting!
----------------------------------------------------
/home/ian.rose/dealii/aspect/lib/aspect:exit(1)



----------------------------------------------------
Exception on processing:
Iterative method reported convergence failure in step 2467 with residual
5.68
Aborting!
----------------------------------------------------
/home/ian.rose/dealii/aspect/lib/aspect:exit(1)



_______________________________________________________

In case it is relevant, I have compiled everything with Intel icc v.12

Thanks!
Ian

On Wed, May 2, 2012 at 8:26 AM, Timo Heister <heister at math.tamu.edu> wrote:

> Hi Ian,
>
> (cc'ing to the mailing list)
>
> A couple of questions:
> 1. can you double check that you are using Trilinos 10.4.2?
> 2. Also, did you make any changes to the .prm (say box.prm)?
> 3. On how many processors are you running?
> 4. can you send us the program output please?
>
> Thanks,
> Timo
>
> On Tue, May 1, 2012 at 2:24 PM, Ian Rose <ian.rose at berkeley.edu> wrote:
> > Hi Timo,
> >
> > I am not sure if this would be more appropriate for the Aspect mailing
> list,
> > so if you think that is the case, feel free to forward.  I have been
> trying
> > to run the development version of Aspect and have been having difficulty
> > getting it to work.  Everything compiles fine, and even runs for a few
> dozen
> > time steps.  However, pretty soon the time step gets extremely small,
> then
> > it exits with the error:
> >
> > Exception on processing:
> > Iterative method reported convergence failure in step 4225 with residual
> > 59.0336
> > Aborting!
> >
> > This occurs when running any of the example parameter files (box,
> > simple_2d_shell, blankenbach), though the specific numbers vary, of
> course.
> > I am not sure what could be causing this failure to converge, especially
> > since the step-32 example program with deal.ii runs just fine.  I am
> running
> > aspect rev. 974, deal.ii rev. 25316, p4est 0.3.4, and Trilinos 10.4.2.
> >
> > Any insights as to what might be causing this?
> > Thanks a lot,
> > Ian Rose
>
>
>
> --
> Timo Heister
> http://www.math.tamu.edu/~heister/
>
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