First of all, I beg your pardon if the question has been asked before or somewhere else. I have inherited a fully working deal.II application using Trilinos and Epetra for the solution of the system (using the GMRES method). I would like to port the application to GPU (currently it runs on multi CPU using MPI). In the beginning it would be enough to use a single GPU (for relatively small problems) but the final goal is to use multiple GPU. I understand that Trilinos supports CUDA through the Tpetra package but I am not familiar neither with deal.II nor with Trilinos (although I am very familiar with multi-GPU programming) and I wonder if there is a (relatively) easy path to migrate from Epetra to Tpetra (I could not find specific documentation in Trilinos) and then activate the CUDA support in Tpetra. Did someone have a similar problem and how did you manage it? Is there a specific deal.II wrapper for Trilinos using Tpetra? Any other suggestion/example of how to use CUDA for the solution of the system in a deal.II application that makes use of Trilinos/Epetra? Thanks in advance for any help/pointer and best Season Greetings, Massimo
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