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simulation.hh
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Thu, May 2, 10:30

simulation.hh
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#ifndef SIMULATION_HH
#define SIMULATION_HH
/* -------------------------------------------------------------------------- */
#include "double_buffer.hh"
#include "dumpers.hh"
#include "grid.hh"
/* -------------------------------------------------------------------------- */
#include <array>
#include <memory>
#include <tuple>
#if defined(_MPI)
#include <mpi.h>
#endif
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
class Simulation {
public:
#if defined(_MPI)
Simulation(int m, int n, MPI_Comm communicator);
#else
Simulation(int m, int n);
#endif
/// set the initial conditions, Dirichlet and source term
virtual void set_initial_conditions();
/// perform the simulation
std::tuple<float, int> compute();
/// access the precision
void set_epsilon(float epsilon);
float epsilon() const;
std::size_t complexity() { return 8 * m_global_size[0] * m_global_size[1]; }
float min() const;
float max() const;
float dims(std::size_t i) const { return m_dims[i]; }
protected:
/// compute one step and return an error
virtual float compute_step();
/// compute one row
float compute_row(int i);
private:
/// Global problem size
std::array<int, 2> m_global_size;
/// Local problem size
std::array<int, 2> m_local_size;
/// local offset
std::array<int, 2> m_offset;
/// Cartesian dimensions
std::array<int, 2> m_dims;
/// Cartesian coordinates
std::array<int, 2> m_coords;
/// proc rank
int m_prank{0};
/// communicator size
int m_psize{1};
/// Precision to achieve
float m_epsilon;
/// grid spacing
std::array<float, 2> m_h;
float m_l2_shared;
/// Grids storage
DoubleBuffer m_grids;
/// source term
Grid m_f;
/// Dumper to use for outputs
std::unique_ptr<Dumper> m_dumper;
#if defined(_MPI)
/// communicator
MPI_Comm m_communicator;
#endif
};
#endif /* SIMULATION_HH */

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