Dear all,
when adjusting my own code to deal.ii version 8.5. I noticed a change in
the behavior of the FETools::extrapolate method.
Since I could not find this in the list of changes, I would like to let
you know as this might have been unintended.
Description:
Until 8.4.1 FETools::extrapolate has been working with
dealii::BlockVectors while in 8.5 the method returns an error
stating that the size 0 does not match the number of unknowns.
Details:
I have traced back its origin (i.e. my input data is correctly scaled).
The error message is created in line 86 of fe_tools_interpolate.cc
and is apparently caused by the internal vector u3
created in line 1586 of
source/fe/fe_tools_extrapolate.cc
This vector is not resized in line 1587 by the method
internal::reinit_distributed
while this was working in version 8.4.1
I hope this is useful for your development and thanks for the otherwise
great software.
Best regards
Winni
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