Hello Dr. Bangerth,
I apologize for the poor communication from my side.
Below are the changes I made to the refinement process in Step-18 in red:
typedef TrilinosWrappers::MPI::Vector vectorType;
std::vector<std::vector<vectorType>> history_field (dim, std::vector<
Vector<double> >(dim));
std::vector< std::vector< Vector<double> > >
local_history_values_at_qpoints (dim, std::vector<
Vector<double> >(dim)),
local_history_fe_values (dim, std::vector< Vector<double>
>(dim));
for (unsigned int i=0; i<dim; ++i)
for (unsigned int j=0; j<dim; ++j)
{
history_field[i][j].reinit(locally_owned_dofs, locally_relevant_dofs,
mpi_communicator);
local_history_values_at_qpoints[i][j].reinit(quadrature.size());
local_history_fe_values[i][j].reinit(history_fe.n_dofs_per_cell());
}
.
.
[Calculate the global field]
.
.
history_field.compress(VectorOperation::add);
The above section of code gives an error during the compress operation. The
error message is -
‘class std::vector<std::vector<dealii::TrilinosWrappers::MPI::Vector,
std::allocator<dealii::TrilinosWrappers::MPI::Vector> > >’ has no member
named ‘compress’
The above error message is expected as the compress operation is not
defined for that datatype. However, I am unsure how to do the compress
operation, as mentioned in Step-18. Please advice.
Best,
Raghunandan.
On Thursday, September 14, 2023 at 6:49:11 PM UTC-5 Wolfgang Bangerth wrote:
> On 9/14/23 15:50, Raghunandan Pratoori wrote:
> >
> > It took me some time to get around to trying it out. I am unable to
> figure out
> > how to compress the vector.
> > The simple 'history_field.compress(VectorOperation::add);' did not work
> as
> > expected. Can you tell me how to use it for type
> > std::vector<std::vector<TrilinosWrappers::MPI::Vector>>?
>
> Pratoori:
> you will have to be more specific in explaining what doesn't work. "did
> not
> work" is not enough for me to understand what you are doing, nor what is
> going
> wrong. It's as if you were saying "I've tried to prove the Riemann
> hypothesis,
> but the proof doesn't work. Can you tell me how to fix it?" without
> showing
> what you already did :-)
>
> Show us the code and the error message, and then we can perhaps help!
>
> Best
> W.
>
> --
> ------------------------------------------------------------------------
> Wolfgang Bangerth email: bang...@colostate.edu
> www: http://www.math.colostate.edu/~bangerth/
>
>
>
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