KokkosTimeKernel.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#pragma once
 
#include "KokkosKernel.h"
 
namespace Moose::Kokkos
{
 
class TimeKernel : public Kernel
{
public:
  static InputParameters validParams();
 
  TimeKernel(const InputParameters & parameters);
 
  TimeKernel(const TimeKernel & object);
 
  KOKKOS_FUNCTION void computeResidualAdditional(const unsigned int /* ib */,
                                                 const unsigned int /* ie */,
                                                 AssemblyDatum & /* datum */,
                                                 Real * /* local_re */) const
  {
  }
 
  template <typename Derived>
  KOKKOS_FUNCTION void computeResidualInternal(const Derived & kernel, AssemblyDatum & datum) const;
 
protected:
  const VariableValue _u_dot;
  Array<Real> _du_dot_du;
};
 
template <typename Derived>
KOKKOS_FUNCTION void
TimeKernel::computeResidualInternal(const Derived & kernel, AssemblyDatum & datum) const
{
  ResidualObject::computeResidualInternal(
      datum,
      [&](Real * local_re, const unsigned int ib, const unsigned int ie)
      {
        for (unsigned int qp = 0; qp < datum.n_qps(); ++qp)
          for (unsigned int i = ib; i < ie; ++i)
            local_re[i] += datum.JxW(qp) * kernel.template computeQpResidual<Derived>(i, qp, datum);
 
        kernel.computeResidualAdditional(ib, ie, datum, local_re);
      });
}
 
} // namespace Moose::Kokkos