Hello Wolfgang,
I think it would be great, if the outdated tutorials would be updated.
In my experience a lot of people only read the tutorials directly
related to the (kind of) problem they want to solve. Thus they never get
in contact with the new techniques "hidden" in the later tutorials.
Best Regards,
Markus
Wolfgang Bangerth schrieb:
All,
for a few years something has been bugging me: Some of the tutorial
programs we have aren't quite up to date any more with regard to the tools
in the library we use. For example,
- step-16 shows multigrid for uniformly refined grids, but we can now do
multigrid on adaptively refined grids as well
- step-12 shows DG methods, but doing a lot of things by hand that we
can now do better and more comfortable with Guido's MeshWorker
framework
- step-9 shows assembling linear systems with explicit threads when we can
do things in a much simpler and more scalable way using the WorkStream
framework
Traditionally, what we then did is to just write a new tutorial, or show
these techniques en passant in another program (the new step-38, which
solves the exact same problem as step-12 using MeshWorker; step-32 which
among many other things happens to use WorkStream). The reasoning was
somehow that we want to be compatible and not force people to re-read
tutorials they've already read.
But I'm getting more and more convinced that our current strategy is silly.
In particular, it makes people who are new to the library read tutorial
programs that just aren't up to date any more. A proliferation of tutorial
programs (e.g. step-12 vs step-38) also doesn't help anybody. Does anyone
have opinions either way how we should address this problem?
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.tamu.edu/~bangerth/
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