STEP-2MOD
Example 2 for DEALII

STEP-2MOD, a dealii code which is a modification of step-2, which uses piecewise linear, quadratic or cubic basis functions, and queries and prints the number of nonzeros and the bandwidth before and after renumbering.

Results:

                    nonzeros     band before    band after

        linear        10,020           1,037           287
        quadratic     64,820           3,912           746 
        cubic        220,500           8,383         1,482
      

Reference:

1. Wolfgang Bangerth, Ralf Hartmann, Guido Kanschat,
   DEAL.II - a general-purpose object-oriented finite element library,
   ACM Transactions on Mathematical Software,
   Volume 33, Number 4, article 24, August 2007.

Source code:

• CMakeLists.txt, the file needed by cmake on my system.
• step-2mod.cc, the source code for the example.
• step-2mod.sh, a shell script which contains the commands to create the makefile and run the example.
• step-2mod.txt, the output file.

• sparsity_pattern_gnuplot.sh, a bash code which can invoke gnuplot to plot a sparsity pattern.
• sparsity_pattern.1
• sparsity_pattern.png
• sparsity_pattern.2,
• sparsity_pattern.png,