On 5/4/23 21:31, Aditya Karthik Saravanakumar wrote:
Note: dofh_uhat is a DoFHandler object corresponding to the
FE_FaceQ finite element space.
_ERROR MESSAGE_
An error occurred in line <374> of file
in function
const dealii::FullMatrix& dealii::FiniteElement<,
That's fair. To be more specific, I'm essentially trying to incorporate the
multigrid code from step 16 into an HDG solver that's very similar to step
51.
My code fails when I try to call the build(DoFHandler) function on my
MGTransferPrebuilt object as shown below
(similar to what's done in
On 5/4/23 19:26, Aditya Karthik Saravanakumar wrote:
I was able to set up all the MGLevelObjects but the MGTransferPrebuilt class
isn't able to generate the prolongation matrices.
Aditya,
I don't know enough about multigrid to help, but you might get better answers
if you are specific about
Hello everyone,
I've been trying to set up a geometric multigrid preconditioner (following
step 16) for an HDG Poisson solver. I was able to set up all the
MGLevelObjects but the MGTransferPrebuilt class isn't able to generate the
prolongation matrices.
Has anyone been successful in
Hello everyone!
This is deal.II newsletter #252.
It automatically reports recently merged features and discussions about the
deal.II finite element library.
## Below you find a list of recently proposed or merged features:
#15177: Make some variables in a few tests 'const'. (proposed by
I think this is just a typo in the documentation exactly like you pointed
out. It would be great to see that fixed. Are you willing to do that?
I am not sure I understand your problem you had to work around. If you go
into detail we might be able to figure out the issue (if there is one
inside
Dear Martin,
Now I feel kind off dumb. This is what I was doing to compile an AVX test
on the side, did not think to include it this way in the CMAKE procedure.
Thanks! Worked very well and now it detects my AVX2 instructions :).
Best
Bruno
On Thursday, May 4, 2023 at 8:57:43 a.m. UTC-4 Martin
Dear Bruno,
You need to specify appropriate CXX flags. For example, I always use
-D CMAKE_CXX_FLAGS="-march=native"
on my local machines (that run the code I'm compiling) or
-D CMAKE_CXX_FLAGS="-march=icelake-server"
on clusters to be sure the right code gets generated. For example GCC
Dear all,
Hope you are well.
I have tried a few ways to enable AVX instructions (which I think my 12th
Gen Intel(R) Core(TM) i9-12900K) should support, yet I am always unable to
do so. At the Cmake configuration step, the AVX steps all fails whereas the
SSE ones succeed.
How can I remedy this
Dear deal.II community,
I have implemented a multiscale finite element problem using deal.II. It
includes PDEs on different levels, namely a macroscopic/effective PDE and
so-called "cell problems" (not to be confused with cells of the grid),
which have to be solved in each quadrature point of
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