Re: [deal.II] Re: Error Installing Deal.II-8.2.1

2019-02-27 Thread Muhammad Adil
Hi Daniel, I am facing a problem of "Apache License, Version 2.0" during installation of TBB. I don't know where to add the License file and what are changes I have to do in the License file? Thanks On Thu, Feb 28, 2019 at 3:30 PM Muhammad Adil wrote: > Hi Daniel, > I am trying to install TBB ex

Re: [deal.II] Re: Error Installing Deal.II-8.2.1

2019-02-27 Thread Muhammad Adil
Hi Daniel, I am trying to install TBB externally but not successful yet because I am new to use Ubuntu. Will you please me to install TBB? Thanks On Mon, Feb 25, 2019 at 8:06 PM Daniel Arndt < daniel.ar...@iwr.uni-heidelberg.de> wrote: > Muhammad, > > I have installed deal.II-9.0 successfully. >>

Re: [deal.II] Re: Sparsematrix initialization in P4est program

2019-02-27 Thread David Wells
Hi Gabriel, In case you are interested, I have written a patch and a new test for this issue: its available at https://github.com/dealii/dealii/pull/7763 Thanks, David Wells On Tue, Feb 26, 2019 at 8:45 PM David Wells wrote: > Hi Gabriel, > > step-32 does use a pressure element of degree 1 lo

[deal.II] Re: Setting constant modes in Trillinos AMG preconditiner for (u,v,w,p) type of problems

2019-02-27 Thread Daniel Arndt
Bruno, have a look at DoFTools::extract_constant_modes() (https://www.dealii.org/developer/doxygen/deal.II/namespaceDoFTools.html#ab0142d347dcce15ec993acaaa2bf85c3). Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.goo

[deal.II] Setting constant modes in Trillinos AMG preconditiner for (u,v,w,p) type of problems

2019-02-27 Thread Bruno Blais
Hello everyone, I am currently solving a stabilized form of the Navier-Stokes equations. Due to the stabilization terms, I can easily lump everything in a single matrix. Everything is done via the Trillinos Wrappers. I get relatively nice scaling up to a certain number of cells (say 1e6 or so),

Re: [deal.II] Re: Parallel Nonlinear Poisson code in DEALII

2019-02-27 Thread Wolfgang Bangerth
On 2/27/19 4:03 AM, mboron1...@gmail.com wrote: > > I have checked Step-40. Lets say we have an*old_locally_relevant_solution > *vector and a *new_locally_relevant_solution_update* vector (*extracted from > the completely distributed solution in the solve module*). How can we add > these two ve

[deal.II] Re: Parallel Nonlinear Poisson code in DEALII

2019-02-27 Thread mboron1982
Dear Jean-Paul, I have checked Step-40. Lets say we have an* old_locally_relevant_solution *vector and a *new_locally_relevant_solution_update* vector (*extracted from the completely distributed solution in the solve module*). How can we add these two vectors in DEALII. Thanking you in anticip

[deal.II] Re: How to compute convergence rate of L2 norm of error without exact solution? And how to compute convergence rate of in different golobally refinement?

2019-02-27 Thread chucui1016
Dear Prof. Arndt, I have used SolutionTransfer as you say, but if I set a phi_0 fixed, then project it into finite element space and get a vector phi_0_h, then I get phi_0_h/2, phi_0_h/4, phi_0_h/8 by using SolutionTransfer, but the norm of (phi_0_h- phi_0_h/2), (phi_0_h/2- phi_0_h/4), (phi_0_h

[deal.II] Re: How to compute convergence rate of L2 norm of error without exact solution? And how to compute convergence rate of in different golobally refinement?

2019-02-27 Thread chucui1016
Dear Prof. Arndt, I have used SolutionTransfer as you say, but if I set a phi_0 fixed, then project it into finite element space and get a vector phi_0_h, then I get phi_0_h/2, phi_0_h/4, phi_0_h/8 by using SolutionTransfer, but the norm of (phi_0_h- phi_0_h/2), (phi_0_h/2- phi_0_h/4), (phi_0_h