Re: [deal.II] Re: Cmake-MPI

2017-12-21 Thread feapman
Denis, Thanks for your help! I will use Spack method in other desktop! Regards, Yaakov On Friday, December 15, 2017 at 6:35:22 AM UTC+1, Denis Davydov wrote: > > Or use Spack which makes sure that only note instance of each dependency > (such as MPI) is used to build deal.ii and all its

[deal.II] PDE Software Frameworks 2018 -- May 28-30, Hotel Zander K, Bergen, Norway

2017-12-21 Thread Guido Kanschat
Sent on behalf of Robert Kloefkorn: Dear friends and colleagues, It is a great pleasure to announce the PDE Software Frameworks (PDESoft) 2018 Conference, which will be held at the hotel Zander K (https://www.zanderk.no/en/), Bergen, Norway, May 28 - 30, 2018. The scientific committee of the

Re: [deal.II] Re: Why does the L2-norm increase when the number of nodes becomes too large?

2017-12-21 Thread 'Uwe Köcher' via deal . II User Group
Dear Luca (and Jie) due to your comment On Wednesday, 20 December 2017 17:20:43 UTC+1, Luca Heltai wrote: > > M… > > I’m actually not sure it’s a bug… The point where the error starts growing > is at 10e-12. This is basically machine precision, considering the fact > that you are

[deal.II] How to realize a moving frame method?

2017-12-21 Thread Tongzhao Gong
Hi, everyone! I'm using the deal.ii library to solve a phase-field model to simulate columnar dendrite growth during solidification, and several references proposed a "moving frame method" to improve the computational efficiency. For example, I employed a 100*500 rectangle

Re: [deal.II] Custom shapeset questions

2017-12-21 Thread Lukas Korous
Hi Wolfgang, once it is ready, sure. Lukáš Korous On Tue, Dec 19, 2017 at 5:55 PM, Wolfgang Bangerth wrote: > On 12/10/2017 08:58 AM, Lukas Korous wrote: > >> >> >> I just want to share my success - I successfully incorporated the Taylor >> DG space into my code -

Re: [deal.II] Re: Why does the L2-norm increase when the number of nodes becomes too large?

2017-12-21 Thread jie liu
Sorry, the coordinate of x axis is the number of nodes, and the coordinate of y axis is L2 error of the variable. Jie -- 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

Re: [deal.II] Re: Why does the L2-norm increase when the number of nodes becomes too large?

2017-12-21 Thread jie liu
Hi Praveen, On Thursday, December 21, 2017 at 3:38:21 AM UTC+1, Praveen C wrote: > step-7 uses QGauss(3) to compute error norm. Have you tried increased > number of quadrature points ? > > > Also, what is the quadrature rule you use for assembling? > Yes, I increased the number of quadrature

Re: [deal.II] Re: Cmake-MPI

2017-12-21 Thread feapman
Dear Bruno, Dear Prof. Bangerth and Dealii Team, The problem is solved, now I can use dealii with p4est & trilino for the codes which are developed by Prof. Wick & Prof. Heister. Warm regards, Yaakov On Friday, December 15, 2017 at 5:27:53 PM UTC+1, Bruno Turcksin wrote: > > Yaakov, > > Have