GPU support for Cartesian problems #324
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Just noting here that the trace operator doesn't work on GPU's as cupy's einsum doesn't take an out argument. A similar fix to dot product (commit fb9b3d6) fixes things. |
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This PR adds GPU support for one dimensional bases and cartesian problems. Remaining rough edges include good defaults for subproblem coupling, and raising or warning for unsupported features (GPU+MPI, GPU+curvilinear).