Hi Winni,
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
This looks like a bug. Do you think you could come up with a tiny piece
of code (doesn't have to do anything useful other than setting up the
data structures and calling the function in question) that demonstrates
the problem? That would be very valuable. If so, please open an issue here:
https://github.com/dealii/dealii/issues/new
Thanks
W.
--
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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