]> https://gitweb.dealii.org/ - dealii-svn.git/commitdiff
Mention step-40.
authorbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Sun, 24 Oct 2010 16:39:46 +0000 (16:39 +0000)
committerbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Sun, 24 Oct 2010 16:39:46 +0000 (16:39 +0000)
git-svn-id: https://svn.dealii.org/trunk@22455 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/examples/step-18/doc/intro.dox

index aa86d2a2deffe251fdb788efe6db635201065676..83f12fdb2c4320f3b27211f1de15b33ebf00f050 100644 (file)
@@ -7,12 +7,14 @@ that we have already started with step-8 and step-17. It extends it into two
 different directions: first, it solves the quasistatic but time dependent
 elasticity problem for large deformations with a Lagrangian mesh movement
 approach. Secondly, it shows some more techniques for solving such problems
-using %parallel processing with PETSc's linear algebra. In addition to this, we
-show how to work around the main bottleneck of step-17, namely that we
-generated graphical output from only one process, and that this scaled very
-badly with larger numbers of processes and on large problems. Finally, a good
-number of assorted improvements and techniques are demonstrated that have not
-been shown yet in previous programs.
+using %parallel processing with PETSc's linear algebra. In addition to this,
+we show how to work around one of the two major bottlenecks of step-17, namely
+that we generated graphical output from only one process, and that this scaled
+very badly with larger numbers of processes and on large problems. (The other
+bottleneck, namely that every processor has to hold the entire mesh and
+DoFHandler, is addressed in step-40.) Finally, a
+good number of assorted improvements and techniques are demonstrated that have
+not been shown yet in previous programs.
 
 As before in step-17, the program runs just as fine on a single sequential
 machine as long as you have PETSc installed. Information on how to tell

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