diff options
Diffstat (limited to 'lid_driven_cavity')
| -rw-r--r-- | lid_driven_cavity/cuda/config.py | 2 | ||||
| -rwxr-xr-x | lid_driven_cavity/cuda/generate.py | 2 | ||||
| -rw-r--r-- | lid_driven_cavity/cuda/ldc.cuda.SSS.mako | 53 |
3 files changed, 44 insertions, 13 deletions
diff --git a/lid_driven_cavity/cuda/config.py b/lid_driven_cavity/cuda/config.py index 27000e3..1491fba 100644 --- a/lid_driven_cavity/cuda/config.py +++ b/lid_driven_cavity/cuda/config.py @@ -6,6 +6,7 @@ geometry = Geometry(512, 512) tau = 0.52 precision = 'single' streaming = 'SSS' +index = 'ZYX' ## 3D LDC #descriptor = D3Q19 @@ -13,3 +14,4 @@ streaming = 'SSS' #tau = 0.6 #precision = 'single' #streaming = 'SSS' +#index = 'ZYX' diff --git a/lid_driven_cavity/cuda/generate.py b/lid_driven_cavity/cuda/generate.py index 27ce511..121b501 100755 --- a/lid_driven_cavity/cuda/generate.py +++ b/lid_driven_cavity/cuda/generate.py @@ -19,7 +19,7 @@ generator = Generator( target = 'cuda', precision = config.precision, streaming = config.streaming, - index = 'XYZ', + index = config.index, layout = 'SOA') if args.output is None: diff --git a/lid_driven_cavity/cuda/ldc.cuda.SSS.mako b/lid_driven_cavity/cuda/ldc.cuda.SSS.mako index 2a4aed0..72f5e3b 100644 --- a/lid_driven_cavity/cuda/ldc.cuda.SSS.mako +++ b/lid_driven_cavity/cuda/ldc.cuda.SSS.mako @@ -4,10 +4,11 @@ #include <chrono> #include <iostream> #include <fstream> +#include <algorithm> #include "kernel.h" -void write_moments_to_vtk(const std::string& path, ${float_type}* u) { +void write_moments_to_vtk(const std::string& path, ${float_type}* rho, ${float_type}* u) { std::ofstream fout; fout.open(path.c_str()); @@ -47,16 +48,36 @@ void write_moments_to_vtk(const std::string& path, ${float_type}* u) { % if descriptor.d == 2: for ( std::size_t y = 1; y < ${geometry.size_y-1}; ++y ) { for ( std::size_t x = 1; x < ${geometry.size_x-1}; ++x ) { - const std::size_t gid = x*${geometry.size_y}+y; - fout << u[gid*${descriptor.d}+0] << " " << u[gid*${descriptor.d}+1] << " 0\n"; + const std::size_t iCell = ${index.gid('x','y')}; + fout << u[iCell*${descriptor.d}+0] << " " << u[iCell*${descriptor.d}+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 < ${geometry.size_x-1}; ++x ) { - const std::size_t gid = x*${geometry.size_y*geometry.size_z}+y*${geometry.size_z}+z; - fout << u[gid*${descriptor.d}+0] << " " << u[gid*${descriptor.d}+1] << " " << u[gid*${descriptor.d}+2] << "\n"; + const std::size_t iCell = ${index.gid('x','y','z')}; + fout << u[iCell*${descriptor.d}+0] << " " << u[iCell*${descriptor.d}+1] << " " << u[iCell*${descriptor.d}+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 ) { + const std::size_t iCell = ${index.gid('x','y')}; + fout << rho[iCell] << "\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 ) { + const std::size_t iCell = ${index.gid('x','y','z')}; + fout << rho[iCell] << "\n"; } } } @@ -80,6 +101,8 @@ void simulate(std::size_t nStep) cudaMalloc(&device_moments_rho, ${geometry.volume} * sizeof(${float_type})); ${float_type}* device_moments_u; cudaMalloc(&device_moments_u, ${geometry.volume*descriptor.d} * sizeof(${float_type})); + + std::vector<${float_type}> moments_rho(${geometry.volume}); std::vector<${float_type}> moments_u(${geometry.volume*descriptor.d}); init_sss_control_structure<<<1,1>>>(f_aa, f); @@ -93,7 +116,7 @@ void simulate(std::size_t nStep) for (int iX = 0; iX < ${geometry.size_x}; ++iX) { for (int iY = 0; iY < ${geometry.size_y}; ++iY) { % if descriptor.d == 2: - const std::size_t iCell = iX*${geometry.size_y} + iY; + const std::size_t iCell = ${index.gid('iX','iY')}; if (iX == 0 || iY == 0 || iX == ${geometry.size_x-1} || iY == ${geometry.size_y-1}) { ghost.emplace_back(iCell); } else if (iY == ${geometry.size_y-2}) { @@ -105,7 +128,7 @@ void simulate(std::size_t nStep) } % 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; + const std::size_t iCell = ${index.gid('iX','iY','iZ')}; if ( iX == 0 || iY == 0 || iZ == 0 || iX == ${geometry.size_x-1} || iY == ${geometry.size_y-1} @@ -125,6 +148,11 @@ void simulate(std::size_t nStep) } } + std::sort(ghost.begin(), ghost.end()); + std::sort(bulk.begin(), bulk.end()); + std::sort(lid_bc.begin(), lid_bc.end()); + std::sort(box_bc.begin(), box_bc.end()); + std::cout << "#ghost : " << ghost.size() << std::endl; std::cout << "#bulk : " << bulk.size() << std::endl; std::cout << "#lid : " << lid_bc.size() << std::endl; @@ -188,19 +216,20 @@ void simulate(std::size_t nStep) velocity_momenta_boundary<<<block_count,block_size>>>(f, device_lid_bc_cells, lid_bc.size(), 0.05, 0.0, 0.0); % endif - cudaDeviceSynchronize(); update_sss_control_structure<<<1,1>>>(f); - cudaDeviceSynchronize(); if (iStep % 1000 == 0) { - auto duration = std::chrono::duration_cast<std::chrono::duration<float>>( + cudaDeviceSynchronize(); + + auto duration = std::chrono::duration_cast<std::chrono::duration<double>>( std::chrono::high_resolution_clock::now() - start); - std::cout << "iStep = " << iStep << "; ~" << 1000*${geometry.volume}/(1e6*duration.count()) << " MLUPS" << std::endl; + std::cout << "iStep = " << iStep << "; ~" << 1000*${geometry.volume}l/(1e6*duration.count()) << " MLUPS" << std::endl; block_count = (bulk.size() + block_size - 1) / block_size; collect_moments<<<block_count,block_size>>>(f, device_bulk_cells, bulk.size(), device_moments_rho, device_moments_u); + cudaMemcpy(moments_rho.data(), device_moments_rho, ${geometry.volume}*sizeof(${float_type}), cudaMemcpyDeviceToHost); cudaMemcpy(moments_u.data(), device_moments_u, ${geometry.volume*descriptor.d}*sizeof(${float_type}), cudaMemcpyDeviceToHost); - write_moments_to_vtk("result/ldc_" + std::to_string(iStep) + ".vtk", moments_u.data()); + write_moments_to_vtk("result/ldc_" + std::to_string(iStep) + ".vtk", moments_rho.data(), moments_u.data()); start = std::chrono::high_resolution_clock::now(); } |