On Thu, Mar 10, 2016 at 9:33 AM, Adriano Côrtes <adrimacor...@gmail.com> wrote:
> Dear developers, > > I am trying to understand the FEMSystem framework, and the first thing I > did was to run the example 1, but the output I'm obtaining from the default > run (using make and run.sh) is completely different from the one in > http://libmesh.github.io/examples/fem_system_ex1.html > > Bellow is my output > > <snip> > > > *I have several questions:* > > *1. Why only the timestep 0 printed the line bellow?* > > Nonlinear step: |du|/|u| = 0.99946, |du| = 194.712 > > *2. Why the number of linear iterations is so different from the libmesh > page and my run? Also the finite elements types? * > > Libmesh page: > > Finite Element Types="LAGRANGE", "JACOBI_20_00" "LAGRANGE", "JACOBI_20_00" > Infinite Element Mapping="CARTESIAN" "CARTESIAN" > Approximation Orders="SECOND", "THIRD" "FIRST", "THIRD" > > *3. Where in Libmesh the PETSc class SNES is used? Or better asking does > FEMSystem communicates in the solver level with SNES, or is only in the KSP > level?* > I'll let Roy comment in more detail about whether fem_system_ex1 has regressed, but the differences you are seeing between today's output and the web page documentation is likely due to the fact that my last couple of Doxygen updates have not also updated the examples documentation pages (which apparently date back to Oct 22, 2014!). I'll add an issue to help remind me to look at this. -- John ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
