Dear Hamed,

You are duplicating your posts in two threads. This is not productive, so 
I'm going to ask you to please focus this topic within your other thread 
<!topic/dealii/qXv_kL1TiFA>. You have been 
given some useful advice there that you should follow up on.


On Sunday, October 16, 2016 at 11:39:44 PM UTC+2, Hamed Babaei wrote:
> Another point I need to mention is that I had the same problem when as my 
> first try of parallelization, I paralleled a much simpler code, the 
> step-25, based on the step-40 . 
> I received the same Segmentation Violation error from Petsc. At that time, 
> I replaced PreconditionerAMG with PreconditionerJacobi and the problem 
> resolved. 
> However, Now even using PreconditionerJacobi can not remedy the issue even 
> if it works for very few initial value and boundary conditions.
> On Sunday, October 16, 2016 at 4:05:21 PM UTC-5, Hamed Babaei wrote:
>> Timo,
>> Step-40 works on my machine perfectly. The code and its dependent 
>> parameter file are attached.
>> I appreciate it if you could run the code on your machine and see what's 
>> the problem with it.
>> Thanks 
>> On Sunday, October 16, 2016 at 7:55:35 AM UTC-5, Timo Heister wrote:
>>> > I have parallelized a code for a Thermoelastic problem based on 
>>> step-40 . 
>>> Does step-40 work on your system? 
>>> > It seems from debugger backtracethat that error comes from the 
>>> > PETScWrappers::SolverCG. 
>>> Can you share the backtrace with us? 
>>> -- 
>>> Timo Heister 

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