On 2/14/25 00:07, Junxiang Wang wrote:
Will the distribution process change the data? or there is anything I
need to take care of ?
The code also includes solution data interpolation and history data
transfer to the new refined mesh.
My general strategy for cases such as your is to make the program as
simple as possible. Save the current state of the program somewhere
(ideally in a version control system). Then throw out everything that is
not necessary to demonstrate the problem. I imagine that you don't need
the solution data interpolation and history data transfer, for example.
Pretty much every problem of this sort I've ever run into could be
demonstrated with a 200-line code, and often substantially less.
If you could further give me any advice to tackle this issue, I deeply
appreciate it.
I don't really have any further suggestions on how to debug this, other
than stating that we have been using adaptive mesh refinement in
parallel for ~15 years now and do not observe these sorts of issues. I
am pretty sure that you can find similar cases to yours when you run
step-40, for example.
The only thing I could suggest is to show us how you initialize the
AffineConstraints object. It needs to know both the locally owned and
the locally relevant DoFs -- you may want to take a look at step-40 as
an example.
Best
W.
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