On 10/17/20 2:12 PM, Nikki Holtzer wrote:
Yes it appears to be the system_matrix_inverse because I can print out the
residual and it is indeed not empty.
There is little any of can help you with without having access to the actual
code. The usual way to approach this now is to make the
Yes it appears to be the system_matrix_inverse because I can print out the
residual and it is indeed not empty.
On Saturday, October 17, 2020 at 2:32:02 PM UTC-4 Wolfgang Bangerth wrote:
> On 10/16/20 10:35 AM, Nikki Holtzer wrote:
> >
> > The error I'm receiving is:
> >
> > An error
On 10/16/20 10:35 AM, Nikki Holtzer wrote:
The error I'm receiving is:
An error occurred in line <179> of file
in function
void dealii::FullMatrix::vmult(dealii::Vector&, const
dealii::Vector&, bool) const [with number2 = double; number = double]
The violated condition was:
I was able to diagnose and fix the problem. Thank you. I still have one
remaining error since changing all my matrices to FullMatrix. I have
diagnosed that the issue is the very last line of code below, when
attempting to update my system. I have printed the line in red.
for (unsigned int m =
Nikki,
I can't tell from these pieces of code what dimension is wrong. But you will
find it very useful to run your program in a debugger so that you can see
which matrix access it is that triggers the error, and why. There are a number
of video lectures about running a program in a
The first error seems to be occurring at:
affine_constraints.distribute_local_to_global(cell_nodal_mass_matrix,
local_dof_indices, nodal_mass_matrix);
I have verified that cell_nodal_mass_matrix is indeed the same size as
nodal_mass_matrix.
cell_nodal_mass_matrix is initialized as:
On 10/14/20 8:14 AM, Nikki Holtzer wrote:
void dealii::FullMatrix<
>::add(dealii::FullMatrix< >::size_type,
dealii::FullMatrix< >::size_type, const index_type*,
const number2*, bool, bool) [with number2 = double; index_type = unsigned int;
number = double; dealii::FullMatrix<
Ok thank you that has resolved most of the adding issue. I am still
receiving the following error. It reads to me that there's still an error
on the 'FullMatrix::add()' function. I have verified that they are all gone
however. What else should I be looking for?
An error occurred in line
On 10/13/20 10:28 AM, Nikki Holtzer wrote:
The issue that I have when all matrices are FullMatrix matrices is I can't
seem to get the .add function to result in anything other than error. If I
keep ONLY both nonlinear_part and linear_part as FullMatrix
I receive:
error: no matching function
The issue that I have when all matrices are FullMatrix matrices is I can't
seem to get the .add function to result in anything other than error. If I
keep ONLY both nonlinear_part and linear_part as FullMatrix
I receive:
error: no matching function for call to
On 10/11/20 6:09 PM, Nikki Holtzer wrote:
I was hoping to take the outer product which is formed in a FullMatrix, called
Kronecker_matrix below, multiply it by a coefficient, and add a matrix to it
called nonlinear_part_full. This entire operation I have tried to put into a
Sparse matrix,
I have copied some code below.
I was hoping to take the outer product which is formed in a FullMatrix,
called Kronecker_matrix below, multiply it by a coefficient, and add a
matrix to it called nonlinear_part_full. This entire operation I have tried
to put into a Sparse matrix, called
Nikki,
we can continue to speculate, but your description of what is happening is not
specific enough to really know. You'll have to show us the code you use to be
sure.
I don't understand the connection between the code you show and the outer
product. The outer product is a dense matrix,
My sparsity pattern was created in the following way:
DynamicSparsityPattern c_sparsity(dof_handler.n_dofs(),
dof_handler.n_dofs());
DoFTools::make_sparsity_pattern(dof_handler, c_sparsity,
affine_constraints, true);
which I have used throughout my code with no problems.
The FullMatrix,
On 10/8/20 7:16 AM, Nikki Holtzer wrote:
error: no match for ‘operator+’ (operand types are ‘const
dealii::SparseMatrix’ and ‘dealii::SparseMatrix’)
SparseMatrix has no operator+, so this will not work.
error: no matching function for call to
‘dealii::SparseMatrix::add(double,
Hello everyone,
I was just curious if anyone had any suggestions for the above 'const'
qualifier problem I have stated above?
Thanks!
Nikki
On Thursday, October 8, 2020 at 9:16:24 AM UTC-4 Nikki Holtzer wrote:
> When I do the above, with the modifications you have provided, I still
> obtain
When I do the above, with the modifications you have provided, I still
obtain the following:
error: no match for ‘operator+’ (operand types are ‘const
dealii::SparseMatrix’ and ‘dealii::SparseMatrix’)
or
error: no matching function for call to
‘dealii::SparseMatrix::add(double,
On 10/7/20 2:51 PM, Nikki Holtzer wrote:
When doing so I receive the following error:
An error occurred in line <195> of file
in function
dealii::SparseMatrix&
dealii::SparseMatrix::operator=(double) [with number = double]
The violated condition was:
cols != nullptr
Hello everyone,
I am trying to recast a current FullMatrix as a
SparseMatrix in order to add this matrix to another
SparseMatrix.
I have tried something like this:
SparseMatrix Mat_Sparse;
Mat_Sparse.copy_from(Mat_Full);
Mat_Sparse_2.add(1.,Mat_Sparse);
When doing so I receive the
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