Dear Heena,

may I ask you to be more specific regarding to 
parallel::fullydistributed::Triangualation (p:f:t) error. In the case of 
p:f:t you can copy indeed refined meshes, however users need to deal with 
periodicity on their own by applying the periodicy once again. See the 
following test:

This is kinda annoying, but I was not able to come up with a more 
transparent solution during the development of p:f:t.

Hope that helps,

On Thursday, 11 June 2020 10:06:49 UTC+2, heena patel wrote:
> Dear all,
>                          I am trying to solve semilagrangian advection 
> problem?
> I have traingulation with periodic face.
> I wanted to copy_triangulation and trace back mesh. The thing is with 
> *parallel 
> distributed triangulation* it refuse to copy for refine mesh, that is 
> written in documentation as well. When  I try to use fullydistributed 
> triangulation it gives me error with periodicity. Is there a way that I can 
> copy triangulation with periodicity or I am missing something? The code 
> works if I create new_triangulation with parallel distributed triangulation 
> and work on it. But it is expensive step. Kindly find code in attachment.
> Regards,
> Heena

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