Mariia:
the error suggests that you are trying to write into an element of a matrix that is outside the size of the matrix. You need to find out why that is so. Run the program in a debugger and then inspect why the arguments you give to that function are out of range.

Best
 W.


On 2/3/22 07:03, Мария Бронзова wrote:
*** Caution: EXTERNAL Sender ***

Deal all,

I have been having troubles with running my script with PETSc. I have adjusted my code for parallel computing based on the example from step-40. But I am getting the following error:

----------------------------------------------------
Exception on processing:
--------------------------------------------------------
An error occurred in line <1483> of file </home/mariia/dealii-9.3.1/include/deal.II/lac/petsc_matrix_base.h> in function     void dealii::PETScWrappers::MatrixBase::add(dealii::PETScWrappers::MatrixBase::size_type, dealii::PETScWrappers::MatrixBase::size_type, const size_type*, const PetscScalar*, bool, bool)
The violated condition was:
     ierr == 0
Additional information:
     deal.II encountered an error while calling a PETSc function.
     The description of the error provided by PETSc is "Argument out of
     range".
     The numerical value of the original error code is 63.
--------------------------------------------------------

I was trying to understand, where an argument gets out of range, but I didn't have any success so far.

I created a very simple version of my script without any complications in it for an easier debugging, I attach it in this mail.

If you have any hints, I would be extremely grateful!

Thank you!

Regards,
Mariia

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Wolfgang Bangerth          email:                 [email protected]
                           www: http://www.math.colostate.edu/~bangerth/

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