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Jean-Paul Pelteret
6/30/16
Announcement
Getting started and posting guidelines for new users
Hi there, and welcome to the deal.II user group forum! Presumably you've found yourself here from
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news
Announcement
Getting started and posting guidelines for new users
Hi there, and welcome to the deal.II user group forum! Presumably you've found yourself here from
6/30/16
Jean-Paul Pelteret
2
8/13/15
Announcement
deal.II discussion group: Feedback and guidelines
Dear deal.II users, During the user group meeting held in Texas at the beginning of August we asked
unread,
news
Announcement
deal.II discussion group: Feedback and guidelines
Dear deal.II users, During the user group meeting held in Texas at the beginning of August we asked
8/13/15
Giang Huynh
,
Bruno Turcksin
2
Sep 22
How to obtain parallel solution with the mass-lumping matrix
Hello, Which type of vector are you using? If you use `dealii::LinearAlgebra::Distributed::vector`,
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How to obtain parallel solution with the mass-lumping matrix
Hello, Which type of vector are you using? If you use `dealii::LinearAlgebra::Distributed::vector`,
Sep 22
Severin
,
Bruno Turcksin
4
Sep 22
Installation problem with CUDA
An additional information is that with configurations above, code can be compiled and run but if I
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Installation problem with CUDA
An additional information is that with configurations above, code can be compiled and run but if I
Sep 22
Rene Gassmoeller
Sep 22
deal.II Newsletter #331
Hello everyone! This is deal.II newsletter #331. It automatically reports recently merged features
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deal.II Newsletter #331
Hello everyone! This is deal.II newsletter #331. It automatically reports recently merged features
Sep 22
Léonhard YU
,
Bruno Turcksin
2
Sep 21
Reorder differently the triangulation on different MPI cores?
Hello Leo, I think you are right, the global_active_cell_index() depends on the partitioning of the
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Reorder differently the triangulation on different MPI cores?
Hello Leo, I think you are right, the global_active_cell_index() depends on the partitioning of the
Sep 21
Tom Jackson
,
Wolfgang Bangerth
5
Sep 20
Guidance on the feasibility of implementing the HCT element in deal.II
Dear Professor Bangerth: Thank you for the suggestions and for pointing me to Rob Kirby's work
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Guidance on the feasibility of implementing the HCT element in deal.II
Dear Professor Bangerth: Thank you for the suggestions and for pointing me to Rob Kirby's work
Sep 20
Jalil Khan
, …
Wolfgang Bangerth
8
Sep 18
HDF5 output fails at large meshes .
Here is a minimal self contained example that produces the error. On Thu, Sep 18, 2025 at 8:16 AM
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HDF5 output fails at large meshes .
Here is a minimal self contained example that produces the error. On Thu, Sep 18, 2025 at 8:16 AM
Sep 18
Nihar Bhardwaj Darbhamulla
,
Peter Munch
3
Sep 17
Applying multigrid to one part of the domain
I believe MGTransferGlobalCoarsening does not work with hp::FECollection. I use hp::FECollection for
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Applying multigrid to one part of the domain
I believe MGTransferGlobalCoarsening does not work with hp::FECollection. I use hp::FECollection for
Sep 17
blais...@gmail.com
,
Wolfgang Bangerth
2
Sep 16
deal.II version 9.7 release
All: as a follow-up to the 9.7 release announcement: To every deal.II release, many many people
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deal.II version 9.7 release
All: as a follow-up to the 9.7 release announcement: To every deal.II release, many many people
Sep 16
Jalil Khan
Sep 16
HDF5 output fails at large meshes .
Dear all, I am encountering an issue with HDF5/XDMF output using DataOut::write_hdf5_parallel() on
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HDF5 output fails at large meshes .
Dear all, I am encountering an issue with HDF5/XDMF output using DataOut::write_hdf5_parallel() on
Sep 16
Praveen C
,
Wolfgang Bangerth
2
Sep 15
Strong dirichlet with FE_RaviartThomasNodal
On 9/15/25 05:33, Praveen C wrote: > The violated condition was: fe.is_primitive(i) >
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Strong dirichlet with FE_RaviartThomasNodal
On 9/15/25 05:33, Praveen C wrote: > The violated condition was: fe.is_primitive(i) >
Sep 15
Luca Arpaia
,
Abbas Ballout
2
Sep 13
modification of the mass-matrix in tutorial-67
Luca, I believe that you might be missing something. In the reinit function you have two quadratures:
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modification of the mass-matrix in tutorial-67
Luca, I believe that you might be missing something. In the reinit function you have two quadratures:
Sep 13
Rene Gassmoeller
Sep 11
deal.II Newsletter #330
Hello everyone! This is deal.II newsletter #330. It automatically reports recently merged features
unread,
deal.II Newsletter #330
Hello everyone! This is deal.II newsletter #330. It automatically reports recently merged features
Sep 11
Simon
,
Wolfgang Bangerth
6
Sep 10
Large iteration counts switching from Q2-Q1 to Q1-P0 in step-22 and step-56 --- advice for nonlinear incompressible elasticity?
On 9/10/25 03:41, Simon wrote: > > To answer your question, using this "self"
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Large iteration counts switching from Q2-Q1 to Q1-P0 in step-22 and step-56 --- advice for nonlinear incompressible elasticity?
On 9/10/25 03:41, Simon wrote: > > To answer your question, using this "self"
Sep 10
Paolo Tesini
, …
Matthias Maier
8
Sep 4
Installation for Windows
Long story short: We lack the manpower and motivation to support cygwin and mingw. You can simply
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Installation for Windows
Long story short: We lack the manpower and motivation to support cygwin and mingw. You can simply
Sep 4
Rene Gassmoeller
Sep 3
deal.II Newsletter #329
Hello everyone! This is deal.II newsletter #329. It automatically reports recently merged features
unread,
deal.II Newsletter #329
Hello everyone! This is deal.II newsletter #329. It automatically reports recently merged features
Sep 3
Tao Jin
,
Luca Heltai
2
Sep 2
A limited memory BFGS solver for phase-field fracture simulations: code gallery or tutorial step?
Dear Tao, I personally think this would be a perfect fit for our code gallery! Thanks for sharing. L.
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A limited memory BFGS solver for phase-field fracture simulations: code gallery or tutorial step?
Dear Tao, I personally think this would be a perfect fit for our code gallery! Thanks for sharing. L.
Sep 2
Yunfei Huang
,
blais...@gmail.com
5
Sep 2
Question about solving the inverse problem
Dear Bruno, Thanks a lot for your paper. Best regards. Yunfei blais...@gmail.com <blais.bruno@
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Question about solving the inverse problem
Dear Bruno, Thanks a lot for your paper. Best regards. Yunfei blais...@gmail.com <blais.bruno@
Sep 2
Daniel Abele
, …
blais...@gmail.com
7
Sep 1
FETools::interpolate with distributed vectors
I think you will be fine if you proceed like you are doing right now. It does not take much time, but
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FETools::interpolate with distributed vectors
I think you will be fine if you proceed like you are doing right now. It does not take much time, but
Sep 1
Dmitriy Samosvat
,
Wolfgang Bangerth
4
Aug 27
Custom sine basis
On 8/27/25 02:55, Dmitriy Samosvat wrote: > > I am trying to solve the 30-band kp model for a
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Custom sine basis
On 8/27/25 02:55, Dmitriy Samosvat wrote: > > I am trying to solve the 30-band kp model for a
Aug 27
Luca Heltai
, …
Gerald Marewo
3
Aug 27
4 Fully Funded PhD Positions in High-Performance Scientific Computing – University of Pisa (Deadline: July 18)
I am green with envy. I never had this kind of my opportunity on completing my MSc. Deadline: July 18
unread,
4 Fully Funded PhD Positions in High-Performance Scientific Computing – University of Pisa (Deadline: July 18)
I am green with envy. I never had this kind of my opportunity on completing my MSc. Deadline: July 18
Aug 27
Rene Gassmoeller
Aug 27
deal.II Newsletter #328
Hello everyone! This is deal.II newsletter #328. It automatically reports recently merged features
unread,
deal.II Newsletter #328
Hello everyone! This is deal.II newsletter #328. It automatically reports recently merged features
Aug 27
Arthur Bawin
, …
Wells, David
4
Aug 26
Convergence issues for cubic FE_SimplexP on triangles
Hello Bruno and David, Thank you for the quick reply and the quick fix! I'll give it a try.
unread,
Convergence issues for cubic FE_SimplexP on triangles
Hello Bruno and David, Thank you for the quick reply and the quick fix! I'll give it a try.
Aug 26
Nathaniel Shaffer
, …
Alexander
6
Aug 26
Composing matrix-free operators
Hi Nathaniel While you have seemingly found an answer, I wanted to add that an alternative strategy
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Composing matrix-free operators
Hi Nathaniel While you have seemingly found an answer, I wanted to add that an alternative strategy
Aug 26
LY XXXiao
, …
blais...@gmail.com
6
Aug 25
Convert(copy) a refined serial triangulation to a distributed triangulation
Could an alternartive be to read it as a serial triangulation and then to partition it as a
unread,
Convert(copy) a refined serial triangulation to a distributed triangulation
Could an alternartive be to read it as a serial triangulation and then to partition it as a
Aug 25
Paola GERVASIO
, …
Jason Landini
4
Aug 18
installation problem
Hey, Bringing this issue up again since I have the same issue when I try to install deal.II 9.7.0
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installation problem
Hey, Bringing this issue up again since I have the same issue when I try to install deal.II 9.7.0
Aug 18
Yunfei Huang
,
Luca Heltai
3
Aug 18
question about the neumann boundary
Dear Mr. Heltai, Thanks a lot. it works now. Best regards, Yunfei Luca Heltai <luca.heltai@gmail.
unread,
question about the neumann boundary
Dear Mr. Heltai, Thanks a lot. it works now. Best regards, Yunfei Luca Heltai <luca.heltai@gmail.
Aug 18
Jalil Khan
, …
Timo Heister
6
Aug 14
Checkpoint/Restart
Thanks, this solves the problem. On Tue, Aug 5, 2025 at 7:07 PM Timo Heister <timo.heister@gmail.
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Checkpoint/Restart
Thanks, this solves the problem. On Tue, Aug 5, 2025 at 7:07 PM Timo Heister <timo.heister@gmail.
Aug 14
Thomas Cheetham
,
Timo Heister
3
Aug 13
Non-analytical Matrix-Free coefficient
Thank you for your help Timo, that worked well. Best wishes, Tom On Wednesday, July 23, 2025 at 3:40:
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Non-analytical Matrix-Free coefficient
Thank you for your help Timo, that worked well. Best wishes, Tom On Wednesday, July 23, 2025 at 3:40:
Aug 13
Praveen C
, …
Matthias Maier
4
Aug 8
Basic doubt about specifying compiler and MPI
It's generally best to make sure that mpicc, mpic++, mpirun are in PATH and then enable MPI via -
unread,
Basic doubt about specifying compiler and MPI
It's generally best to make sure that mpicc, mpic++, mpirun are in PATH and then enable MPI via -
Aug 8
Nik Markus Leuenberger
,
Wolfgang Bangerth
3
Aug 6
Automatic Differentiation for step-74 - get_average_of_gradients_from_local_dof_values
On 8/6/25 05:50, Nik Markus Leuenberger wrote: > > I am currently trying to use this to
unread,
Automatic Differentiation for step-74 - get_average_of_gradients_from_local_dof_values
On 8/6/25 05:50, Nik Markus Leuenberger wrote: > > I am currently trying to use this to
Aug 6