Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://www.mooseframework.org
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #pragma once
      11             : 
      12             : #include "KokkosKernel.h"
      13             : 
      14             : /**
      15             :  * This kernel implements the Laplacian operator:
      16             :  * $\nabla u \cdot \nabla \phi_i$
      17             :  */
      18             : class KokkosDiffusion : public Moose::Kokkos::Kernel
      19             : {
      20             : public:
      21             :   static InputParameters validParams();
      22             : 
      23             :   KokkosDiffusion(const InputParameters & parameters);
      24             : 
      25             :   template <typename Derived>
      26             :   KOKKOS_FUNCTION Real computeQpResidual(const unsigned int i,
      27             :                                          const unsigned int qp,
      28             :                                          AssemblyDatum & datum) const;
      29             :   template <typename Derived>
      30             :   KOKKOS_FUNCTION Real computeQpJacobian(const unsigned int i,
      31             :                                          const unsigned int j,
      32             :                                          const unsigned int qp,
      33             :                                          AssemblyDatum & datum) const;
      34             : };
      35             : 
      36             : template <typename Derived>
      37             : KOKKOS_FUNCTION Real
      38    10838208 : KokkosDiffusion::computeQpResidual(const unsigned int i,
      39             :                                    const unsigned int qp,
      40             :                                    AssemblyDatum & datum) const
      41             : {
      42    10838208 :   return _grad_u(datum, qp) * _grad_test(datum, i, qp);
      43             : }
      44             : 
      45             : template <typename Derived>
      46             : KOKKOS_FUNCTION Real
      47     5806848 : KokkosDiffusion::computeQpJacobian(const unsigned int i,
      48             :                                    const unsigned int j,
      49             :                                    const unsigned int qp,
      50             :                                    AssemblyDatum & datum) const
      51             : {
      52     5806848 :   return _grad_phi(datum, j, qp) * _grad_test(datum, i, qp);
      53             : }