[aspect-devel] Failure to converge

[Eric Heien]

Works fine now, thanks.

-Eric

On Apr 20, 2012, at 2:54 PM, Timo Heister wrote:

> Hi Eric,
> 
> I think I fixed it. For some reason it was using prescribed boundaries
> which were zero before, but are now set for the inclusion benchmark.
> 
> On Fri, Apr 20, 2012 at 4:44 PM, Eric Heien <emheien at ucdavis.edu> wrote:
>> I just tried running the latest version of Aspect (with the latest deal.ii repository code) and I get the following error when using box.prm:
>> 
>> login1$ ./lib/aspect box.prm
>> 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... 1 iterations.
>>   Rebuilding Stokes preconditioner...
>>   Solving Stokes system...
>> 
>> +---------------------------------------------+------------+------------+
>> | Total wallclock time elapsed since start    |      10.7s |            |
>> |                                             |            |            |
>> | Section                         | no. calls |  wall time | % of total |
>> +---------------------------------+-----------+------------+------------+
>> | Assemble Stokes system          |         1 |    0.0248s |      0.23% |
>> | Assemble temperature system     |         1 |    0.0464s |      0.43% |
>> | Build Stokes preconditioner     |         1 |    0.0247s |      0.23% |
>> | Build temperature preconditioner|         1 |   0.00457s |     0.043% |
>> | Solve Stokes system             |         1 |      10.6s |        99% |
>> | Solve temperature system        |         1 |  0.000835s |    0.0078% |
>> | Setup dof systems               |         1 |    0.0265s |      0.25% |
>> +---------------------------------+-----------+------------+------------+
>> 
>> 
>> 
>> ----------------------------------------------------
>> Exception on processing:
>> Iterative method reported convergence failure in step 2467 with residual 5.67724
>> Aborting!
>> ----------------------------------------------------
>> 
>> This same error occurs on 3 different platforms so I don't think it's a problem with my setup.  Has something changed lately in Aspect that would cause this?
>> 
>> Thanks,
>> 
>> -Eric
>> 
>> _______________________________________________
>> Aspect-devel mailing list
>> Aspect-devel at geodynamics.org
>> http://geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel
> 
> 
> 
> -- 
> Timo Heister
> http://www.math.tamu.edu/~heister/
> _______________________________________________
> Aspect-devel mailing list
> Aspect-devel at geodynamics.org
> http://geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel