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Marek Čapek
Jan 10, 2018, 5:37:44 PM1/10/18
to deal.II User Group
Hello,
i have a little bit vague question:
I have a computational domain with clearly
discernible inflow. I use parallel::distributed::Triangulation
I would like to use CuthilMcKee renumbering in order
to get some performance boot for preconditioner+solver.
I am able to define starting_indices
In
https://www.dealii.org/8.4.0/doxygen/deal.II/namespaceDoFRenumbering.html#ab938a690bf4e2adff191fe969b0f21d3
it is said, that the renumbering occurs on each processor individually.
Can I still get the gradient boost from the renumbering?
Are there other strategies how to get improvement of linear solver
convergence using Dofs renumbering in the distributed case?
Thanks
Marek C
i have a little bit vague question:
I have a computational domain with clearly
discernible inflow. I use parallel::distributed::Triangulation
I would like to use CuthilMcKee renumbering in order
to get some performance boot for preconditioner+solver.
I am able to define starting_indices
In
https://www.dealii.org/8.4.0/doxygen/deal.II/namespaceDoFRenumbering.html#ab938a690bf4e2adff191fe969b0f21d3
it is said, that the renumbering occurs on each processor individually.
Can I still get the gradient boost from the renumbering?
Are there other strategies how to get improvement of linear solver
convergence using Dofs renumbering in the distributed case?
Thanks
Marek C
Bruno Turcksin
Jan 10, 2018, 5:52:29 PM1/10/18
to deal.II User Group
Marek,
Take a look here https://github.com/dealii/dealii/issues/5407 and here https://github.com/dealii/dealii/pull/5475#commitcomment-25928779 I think this is similar to what you are trying to do. Note that you need the development version of deal.II
Best,
Bruno
Take a look here https://github.com/dealii/dealii/issues/5407 and here https://github.com/dealii/dealii/pull/5475#commitcomment-25928779 I think this is similar to what you are trying to do. Note that you need the development version of deal.II
Best,
Bruno
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