Hi Timo,<br><br>1) I am using Trilinos 10.4.2<br>2) I am using the unedited box.prm<br>3) I have tried it with 32, 16, 8, and 4 processors<br>4) Here is an output with box.prm on 4 processors. This one does not make it for any time steps...<br>
<br><br>Number of active cells: 256 (on 5 levels)<br>Number of degrees of freedom: 3,556 (2,178+289+1,089)<br><br>*** Timestep 0: t=0 seconds<br> Solving temperature system... 13 iterations.<br> Rebuilding Stokes preconditioner...<br>
Solving Stokes system... <br><br>+---------------------------------------------+------------+------------+<br>| Total wallclock time elapsed since start | 25.4s | |<br>| | | |<br>
| Section | no. calls | wall time | % of total |<br>+---------------------------------+-----------+------------+------------+<br>| Assemble Stokes system | 1 | 0.497s | 2% |<br>
| Assemble temperature system | 1 | 1.13s | 4.4% |<br>| Build Stokes preconditioner | 1 | 0.475s | 1.9% |<br>| Build temperature preconditioner| 1 | 0.0998s | 0.39% |<br>
| Solve Stokes system | 1 | 22.1s | 87% |<br>| Solve temperature system | 1 | 0.0207s | 0.082% |<br>| Setup dof systems | 1 | 0.648s | 2.6% |<br>
+---------------------------------+-----------+------------+------------+<br><br><br>----------------------------------------------------<br>Exception on processing: <br>Iterative method reported convergence failure in step 2467 with residual 5.68<br>
Aborting!<br>----------------------------------------------------<br>/home/ian.rose/dealii/aspect/lib/aspect:exit(1)<br><br><br>----------------------------------------------------<br>Exception on processing: <br>Iterative method reported convergence failure in step 2467 with residual 5.68<br>
Aborting!<br>----------------------------------------------------<br>/home/ian.rose/dealii/aspect/lib/aspect:exit(1)<br><br><br>----------------------------------------------------<br>Exception on processing: <br>Iterative method reported convergence failure in step 2467 with residual 5.68<br>
Aborting!<br>----------------------------------------------------<br>/home/ian.rose/dealii/aspect/lib/aspect:exit(1)<br><br><br><br>----------------------------------------------------<br>Exception on processing: <br>Iterative method reported convergence failure in step 2467 with residual 5.68<br>
Aborting!<br>----------------------------------------------------<br>/home/ian.rose/dealii/aspect/lib/aspect:exit(1)<br><br><br><br>_______________________________________________________<br><br>In case it is relevant, I have compiled everything with Intel icc v.12<br>
<br>Thanks!<br>Ian<br><br><div class="gmail_quote">On Wed, May 2, 2012 at 8:26 AM, Timo Heister <span dir="ltr"><<a href="mailto:heister@math.tamu.edu" target="_blank">heister@math.tamu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Ian,<br>
<br>
(cc'ing to the mailing list)<br>
<br>
A couple of questions:<br>
1. can you double check that you are using Trilinos 10.4.2?<br>
2. Also, did you make any changes to the .prm (say box.prm)?<br>
3. On how many processors are you running?<br>
4. can you send us the program output please?<br>
<br>
Thanks,<br>
Timo<br>
<div class="HOEnZb"><div class="h5"><br>
On Tue, May 1, 2012 at 2:24 PM, Ian Rose <<a href="mailto:ian.rose@berkeley.edu">ian.rose@berkeley.edu</a>> wrote:<br>
> Hi Timo,<br>
><br>
> I am not sure if this would be more appropriate for the Aspect mailing list,<br>
> so if you think that is the case, feel free to forward. I have been trying<br>
> to run the development version of Aspect and have been having difficulty<br>
> getting it to work. Everything compiles fine, and even runs for a few dozen<br>
> time steps. However, pretty soon the time step gets extremely small, then<br>
> it exits with the error:<br>
><br>
> Exception on processing:<br>
> Iterative method reported convergence failure in step 4225 with residual<br>
> 59.0336<br>
> Aborting!<br>
><br>
> This occurs when running any of the example parameter files (box,<br>
> simple_2d_shell, blankenbach), though the specific numbers vary, of course.<br>
> I am not sure what could be causing this failure to converge, especially<br>
> since the step-32 example program with deal.ii runs just fine. I am running<br>
> aspect rev. 974, deal.ii rev. 25316, p4est 0.3.4, and Trilinos 10.4.2.<br>
><br>
> Any insights as to what might be causing this?<br>
> Thanks a lot,<br>
> Ian Rose<br>
<br>
<br>
<br>
</div></div><span class="HOEnZb"><font color="#888888">--<br>
Timo Heister<br>
<a href="http://www.math.tamu.edu/%7Eheister/" target="_blank">http://www.math.tamu.edu/~heister/</a><br>
</font></span></blockquote></div><br>