From 18c54d79699db7554faa851c87d7113db67a8a08 Mon Sep 17 00:00:00 2001 From: Adrian Kummerlaender Date: Sun, 27 Oct 2019 14:05:21 +0100 Subject: Separate functions into separate template files Selection of the desired templates is possible via a new `functions` parameter. --- boltzgen/kernel/template/example.cpp.mako | 172 ++++++++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 boltzgen/kernel/template/example.cpp.mako (limited to 'boltzgen/kernel/template/example.cpp.mako') diff --git a/boltzgen/kernel/template/example.cpp.mako b/boltzgen/kernel/template/example.cpp.mako new file mode 100644 index 0000000..d979bfd --- /dev/null +++ b/boltzgen/kernel/template/example.cpp.mako @@ -0,0 +1,172 @@ +% if 'moments_vtk' in extras: +void collect_moments_to_vtk(const std::string& path, ${float_type}* f) { + std::ofstream fout; + fout.open(path.c_str()); + + fout << "# vtk DataFile Version 3.0\n"; + fout << "lbm_output\n"; + fout << "ASCII\n"; + fout << "DATASET RECTILINEAR_GRID\n"; +% if descriptor.d == 2: + fout << "DIMENSIONS " << ${geometry.size_x-2} << " " << ${geometry.size_y-2} << " 1" << "\n"; +% else: + fout << "DIMENSIONS " << ${geometry.size_x-2} << " " << ${geometry.size_y-2} << " " << ${geometry.size_z-2} << "\n"; +% endif + + fout << "X_COORDINATES " << ${geometry.size_x-2} << " float\n"; + for( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { + fout << x << " "; + } + + fout << "\nY_COORDINATES " << ${geometry.size_y-2} << " float\n"; + for( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { + fout << y << " "; + } + +% if descriptor.d == 2: + fout << "\nZ_COORDINATES " << 1 << " float\n"; + fout << 0 << "\n"; + fout << "POINT_DATA " << ${(geometry.size_x-2) * (geometry.size_y-2)} << "\n"; +% else: + fout << "\nZ_COORDINATES " << ${geometry.size_z-2} << " float\n"; + for( std::size_t z = 1; z < ${geometry.size_z-1}; ++z ) { + fout << z << " "; + } + fout << "\nPOINT_DATA " << ${(geometry.size_x-2) * (geometry.size_y-2) * (geometry.size_z-2)} << "\n"; +% endif + + ${float_type} rho; + ${float_type} u[${descriptor.d}]; + + fout << "VECTORS velocity float\n"; +% if descriptor.d == 2: + for ( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { + for ( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { + collect_moments(f, x*${geometry.size_y}+y, rho, u); + fout << u[0] << " " << u[1] << " 0\n"; + } + } +% else: + for ( std::size_t z = 1; z < ${geometry.size_z-1}; ++z ) { + for ( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { + for ( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { + collect_moments(f, x*${geometry.size_y*geometry.size_z}+y*${geometry.size_z}+z, rho, u); + fout << u[0] << " " << u[1] << " " << u[2] << "\n"; + } + } + } +% endif + + fout << "SCALARS density float 1\n"; + fout << "LOOKUP_TABLE default\n"; +% if descriptor.d == 2: + for ( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { + for ( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { + collect_moments(f, x*${geometry.size_y}+y, rho, u); + fout << rho << "\n"; + } + } +% else: + for ( std::size_t z = 1; z < ${geometry.size_z-1}; ++z ) { + for ( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { + for ( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { + collect_moments(f, x*${geometry.size_y*geometry.size_z}+y*${geometry.size_z}+z, rho, u); + fout << rho << "\n"; + } + } + } +% endif + + fout.close(); +} +% endif + +void test_ldc(std::size_t nStep) +{ + auto f_a = std::make_unique<${float_type}[]>(${geometry.volume*descriptor.q}); + auto f_b = std::make_unique<${float_type}[]>(${geometry.volume*descriptor.q}); + + ${float_type}* f_prev = f_a.get(); + ${float_type}* f_next = f_b.get(); + + std::vector bulk; + std::vector lid_bc; + std::vector box_bc; + + for (int iX = 1; iX < ${geometry.size_x-1}; ++iX) { + for (int iY = 1; iY < ${geometry.size_y-1}; ++iY) { +% if descriptor.d == 2: + const std::size_t iCell = iX*${geometry.size_y} + iY; + if (iY == ${geometry.size_y-2}) { + lid_bc.emplace_back(iCell); + } else if (iX == 1 || iX == ${geometry.size_x-2} || iY == 1) { + box_bc.emplace_back(iCell); + } else { + bulk.emplace_back(iCell); + } +% elif descriptor.d == 3: + for (int iZ = 0; iZ < ${geometry.size_z}; ++iZ) { + const std::size_t iCell = iX*${geometry.size_y*geometry.size_z} + iY*${geometry.size_z} + iZ; + if (iZ == ${geometry.size_z-2}) { + lid_bc.emplace_back(iCell); + } else if (iX == 1 || iX == ${geometry.size_x-2} || iY == 1 || iY == ${geometry.size_y-2} || iZ == 1) { + box_bc.emplace_back(iCell); + } else { + bulk.emplace_back(iCell); + } + } +% endif + } + } + + for (std::size_t iCell = 0; iCell < ${geometry.volume}; ++iCell) { + equilibrilize(f_prev, f_next, iCell); + } + + const auto start = std::chrono::high_resolution_clock::now(); + + for (std::size_t iStep = 0; iStep < nStep; ++iStep) { + if (iStep % 2 == 0) { + f_next = f_a.get(); + f_prev = f_b.get(); + } else { + f_next = f_b.get(); + f_prev = f_a.get(); + } + +% if 'omp_parallel_for' in extras: +#pragma omp parallel for +% endif + for (std::size_t i = 0; i < bulk.size(); ++i) { + collide_and_stream(f_next, f_prev, bulk[i]); + } + ${float_type} u[${descriptor.d}] { 0. }; +% if 'omp_parallel_for' in extras: +#pragma omp parallel for +% endif + for (std::size_t i = 0; i < box_bc.size(); ++i) { + velocity_momenta_boundary(f_next, f_prev, box_bc[i], u); + } + u[0] = 0.05; +% if 'omp_parallel_for' in extras: +#pragma omp parallel for +% endif + for (std::size_t i = 0; i < lid_bc.size(); ++i) { + velocity_momenta_boundary(f_next, f_prev, lid_bc[i], u); + } + } + + auto duration = std::chrono::duration_cast>( + std::chrono::high_resolution_clock::now() - start); + + std::cout << "#bulk : " << bulk.size() << std::endl; + std::cout << "#lid : " << lid_bc.size() << std::endl; + std::cout << "#wall : " << box_bc.size() << std::endl; + std::cout << "#steps : " << nStep << std::endl; + std::cout << std::endl; + std::cout << "MLUPS : " << nStep*${geometry.volume}/(1e6*duration.count()) << std::endl; + +% if 'moments_vtk' in extras: + collect_moments_to_vtk("test.vtk", f_next); +% endif +} -- cgit v1.2.3