Re: [deal.II] Tensor product polynomials

2022-06-22 Thread Wells, David 
Hi Giselle,

What do you mean by "the hh file is not recognized in the cc file" - is there a 
specific error message this refers to?

In general, if you need to implement a new finite element, you will need to 
write some code. Can you compile any program that depends on deal.II right now?

Best,
David

From: dealii@googlegroups.com  on behalf of Giselle 
Sosa Jones 
Sent: Wednesday, June 22, 2022 10:45 AM
To: dealii@googlegroups.com 
Subject: Re: [deal.II] Tensor product polynomials

Hi David,

I've tried updating my C++ compiler and recompiling deal.II, but I have the 
same error. It is as if the hh file is not recognized in the cc file. I know 
this is a long shot, but do you happen to have any other suggestions? Maybe 
there is an easier way to create this space that I need?

Thank you!

Best,
Giselle

On Tue, May 31, 2022 at 4:28 PM Wells, David 
mailto:drwe...@email.unc.edu>> wrote:
Hi Gisselle,

This error message occurs when you use a very old (probably GCC 4.8 or 4.9) C++ 
compiler with a version of deal.II built with a newer C++ compiler (or vice 
versa). A sure fix is to make sure you use the same compilers both for your 
code and the library. In practice, though, the ABI change occurred in GCC 5 so 
combining any two newer versions is typically okay.

Best,
David

From: dealii@googlegroups.com 
mailto:dealii@googlegroups.com>> on behalf of Giselle 
Sosa Jones mailto:giselle1...@gmail.com>>
Sent: Tuesday, May 31, 2022 11:55 AM
To: deal.II User Group mailto:dealii@googlegroups.com>>
Subject: Re: [deal.II] Tensor product polynomials

You don't often get email from 
giselle1...@gmail.com. Learn why this is 
important
Hello,

I sent this message a while ago and things became clearer for me, but I am 
still not able to create the spaces that I want. My goal is to create local 
spaces that look like this: Q_{k-1,k,k} \times Q_{k,k-1,k} \times Q_{k,k,k-1}, 
for k \geq 1.This is what I am currently doing:

- Created my own class of polynomials similar to the deal.II class 
PolynomialsRaviartThomas, but with the polynomial degrees as described above.
- Created my own class (FE_RTProj) for a finite element space similar to the 
one called FE_DGRaviartThomas. This is a derived class from FE_DGVector and the 
polynomial type is the one created in the item above.

My code does not even compile since I get error messages like: error: undefined 
reference to 'FE_RTProj::FE_RTProj<2, 2>::get_name[abi:cxx11]() const. The 
function get_name is defined in the FE_RTProj h and cc files (I basically 
copied from  FE_DGRaviartThomas). I am not sure if this is a C++ issue and/or 
if there is an easier way of doing this.

Any help is highly appreciated!

Best,
Giselle Sosa Jones

On Tuesday, August 31, 2021 at 9:59:55 a.m. UTC-5 Giselle Sosa Jones wrote:
Thank you, Dr. Bangerth, I think these extra comments clarify it for me.

Best,
Giselle

On Monday, August 30, 2021 at 8:15:16 p.m. UTC-5 Wolfgang Bangerth wrote:
On 8/28/21 4:52 PM, Giselle Sosa Jones wrote:
>
> I need to create a local space of polynomials in 3D of the form
> Q_{k-1,k,k} \times Q_{k,k-1,k} \times Q_{k,k,k-1}. This space is very
> similar to the DG Raviart-Thomas space, with the difference that the
> polynomial order of each component is one order lower in the
> corresponding direction. I was looking at the file
> polynomials_raviart_thomas.cc to get an idea of how to create them but I
> am a bit lost. Can someone offer a suggestion?

Giselle -- can you be specific about which part you have trouble with?
I've tried to improve the documentation of the key function of that
class a bit:
https://github.com/dealii/dealii/pull/12726

Best
Wolfgang

--

Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/

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[deal.II] deal.II Newsletter #216

2022-06-22 Thread 'Rene Gassmoeller' via deal.II User Group 
Hello everyone!

This is deal.II newsletter #216.
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:

#14033: [9.4] Takeover #14032: Disable HYPRE in the Tvmult test. (proposed by 
drwells) https://github.com/dealii/dealii/pull/14033

#14032: Disable HYPRE in the Tvmult test. (proposed by drwells) 
https://github.com/dealii/dealii/pull/14032

#14031: Remove deprecated atomicAdd_wrapper (proposed by masterleinad) 
https://github.com/dealii/dealii/pull/14031

#14030: [9.4] Take over #14029: Work around a GCC-12 warning about array 
accesses. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/14030

#14029: Work around a GCC-12 warning about array accesses. (proposed by 
drwells; merged) https://github.com/dealii/dealii/pull/14029

#14028: [9.4] Take over #14015: Make get_cell_range_category() more consistent 
with get_cell_category() (proposed by peterrum; merged) 
https://github.com/dealii/dealii/pull/14028

#14027: [9.4] Take over #14026: Fix warning of gcc-12 with gather_pd/ps 
instructions (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/14027

#14026: Fix warning of gcc-12 with gather_pd/ps instructions (proposed by 
kronbichler; merged) https://github.com/dealii/dealii/pull/14026

#14025: Query ghost index set only once in Partitioner::global_to_local 
(proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/14025

#14024: Do not add locally owned dofs to ghost set during construction 
(proposed by kronbichler) https://github.com/dealii/dealii/pull/14024

#14023: Remove obsolete header file (proposed by kronbichler; merged) 
https://github.com/dealii/dealii/pull/14023

#14022: Reduce header inclusions of index_set.h in evaluation_kernels (proposed 
by kronbichler) https://github.com/dealii/dealii/pull/14022

#14021: Restructure inline functions of IndexSet (proposed by kronbichler) 
https://github.com/dealii/dealii/pull/14021

#14020: Avoid unnecessary locally_relevant_dofs in mg_transfer_internal 
(proposed by kronbichler) https://github.com/dealii/dealii/pull/14020

#14019: MGConstrainedDoFs::clear_user_constraints (proposed by zjiaqi2018; 
merged) https://github.com/dealii/dealii/pull/14019

#14018: Better describe what FullMatrix is and does. (proposed by bangerth; 
merged) https://github.com/dealii/dealii/pull/14018

#14017: Minor text improvements in a tutorial documentation. (proposed by 
bangerth; merged) https://github.com/dealii/dealii/pull/14017

#14016: Add reference to fast hanging-node algo and global coarsening (proposed 
by peterrum; merged) https://github.com/dealii/dealii/pull/14016

#14015: Make get_cell_range_category() more consistent with get_cell_category() 
(proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14015

#14014: Add test (MG+DG+hp) (proposed by peterrum) 
https://github.com/dealii/dealii/pull/14014

#14013: MatrixFree: allow categorization of ghost cells (proposed by peterrum; 
merged) https://github.com/dealii/dealii/pull/14013

#14012: [9.4] Take over #14010 and #14011 (proposed by peterrum; merged) 
https://github.com/dealii/dealii/pull/14012

#14011: Can't use ReferenceCells in switch-case. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/14011

#14010: Can't use ReferenceCells in switch-case. (proposed by bangerth; merged) 
https://github.com/dealii/dealii/pull/14010

#14009: [9.4] Fix compilation with clang-13. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/14009

#14007: Improve documentation of MF::AD::cell_vectorization_category (proposed 
by peterrum; merged) https://github.com/dealii/dealii/pull/14007

#14006: Fix compilation with clang-13. (proposed by drwells; merged) 
https://github.com/dealii/dealii/pull/14006

#14005: MatrixFree: improve assert (proposed by peterrum; merged) 
https://github.com/dealii/dealii/pull/14005

#14003: [9.4] Take over #14002, Fix failing symengine tests (proposed by 
tamiko; merged) https://github.com/dealii/dealii/pull/14003

#14002: Fix failing symengine tests (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/14002

#14001: Update AUTHORS.md (proposed by NiklasWik; merged) 
https://github.com/dealii/dealii/pull/14001

#13999: [9.4] CMake: Remove taskflow configure (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/13999

#13998: [9.4] remove p4est_bug_01 test (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/13998

#13995: switch all DEAL_II_DEPRECATED_EARLY to DEAL_II_DEPRECATED (proposed by 
tamiko; merged) https://github.com/dealii/dealii/pull/13995

#13994: update VERSION (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/13994

#13993: Update tag file references for release. (proposed by tamiko; merged) 
https://github.com/dealii/dealii/pull/13993

#13992: Update changelog for release (proposed by tamiko; merged)

Re: [deal.II] Tensor product polynomials

2022-06-22 Thread Giselle Sosa Jones 
Hi David,

I've tried updating my C++ compiler and recompiling deal.II, but I have the
same error. It is as if the hh file is not recognized in the cc file. I
know this is a long shot, but do you happen to have any other suggestions?
Maybe there is an easier way to create this space that I need?

Thank you!

Best,
Giselle

On Tue, May 31, 2022 at 4:28 PM Wells, David  wrote:

> Hi Gisselle,
>
> This error message occurs when you use a very old (probably GCC 4.8 or
> 4.9) C++ compiler with a version of deal.II built with a newer C++ compiler
> (or vice versa). A sure fix is to make sure you use the same compilers both
> for your code and the library. In practice, though, the ABI change occurred
> in GCC 5 so combining any two newer versions is typically okay.
>
> Best,
> David
> --
> *From:* dealii@googlegroups.com  on behalf of
> Giselle Sosa Jones 
> *Sent:* Tuesday, May 31, 2022 11:55 AM
> *To:* deal.II User Group 
> *Subject:* Re: [deal.II] Tensor product polynomials
>
> You don't often get email from giselle1...@gmail.com. Learn why this is
> important 
> Hello,
>
> I sent this message a while ago and things became clearer for me, but I am
> still not able to create the spaces that I want. My goal is to create local
> spaces that look like this: Q_{k-1,k,k} \times Q_{k,k-1,k} \times
> Q_{k,k,k-1}, for k \geq 1.This is what I am currently doing:
>
> - Created my own class of polynomials similar to the deal.II
> class PolynomialsRaviartThomas, but with the polynomial degrees as
> described above.
> - Created my own class (FE_RTProj) for a finite element space similar to
> the one called FE_DGRaviartThomas. This is a derived class from FE_DGVector
> and the polynomial type is the one created in the item above.
>
> My code does not even compile since I get error messages like: error:
> undefined reference to 'FE_RTProj::FE_RTProj<2, 2>::get_name[abi:cxx11]()
> const. The function get_name is defined in the FE_RTProj h and cc files (I
> basically copied from  FE_DGRaviartThomas). I am not sure if this is a C++
> issue and/or if there is an easier way of doing this.
>
> Any help is highly appreciated!
>
> Best,
> Giselle Sosa Jones
>
> On Tuesday, August 31, 2021 at 9:59:55 a.m. UTC-5 Giselle Sosa Jones wrote:
>
> Thank you, Dr. Bangerth, I think these extra comments clarify it for me.
>
> Best,
> Giselle
>
> On Monday, August 30, 2021 at 8:15:16 p.m. UTC-5 Wolfgang Bangerth wrote:
>
> On 8/28/21 4:52 PM, Giselle Sosa Jones wrote:
> >
> > I need to create a local space of polynomials in 3D of the form
> > Q_{k-1,k,k} \times Q_{k,k-1,k} \times Q_{k,k,k-1}. This space is very
> > similar to the DG Raviart-Thomas space, with the difference that the
> > polynomial order of each component is one order lower in the
> > corresponding direction. I was looking at the file
> > polynomials_raviart_thomas.cc to get an idea of how to create them but I
> > am a bit lost. Can someone offer a suggestion?
>
> Giselle -- can you be specific about which part you have trouble with?
> I've tried to improve the documentation of the key function of that
> class a bit:
> https://github.com/dealii/dealii/pull/12726
>
> Best
> Wolfgang
>
> --
> 
> Wolfgang Bangerth email: bang...@colostate.edu
> www: http://www.math.colostate.edu/~bangerth/
>
> --
> The deal.II project is located at http://www.dealii.org/
> For mailing list/forum options, see
> https://groups.google.com/d/forum/dealii?hl=en
> ---
> You received this message because you are subscribed to the Google Groups
> "deal.II User Group" group.
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> To view this discussion on the web visit
> https://groups.google.com/d/msgid/dealii/f3388a43-fe77-4c01-a346-1a7fb89d243dn%40googlegroups.com
> 
> .
>
> --
> The deal.II project is located at http://www.dealii.org/
> For mailing list/forum options, see
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> .
>

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