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#include <kel/lbm/lbm.hpp>
#include <AdaptiveCpp/sycl/sycl.hpp>
#include <forstio/codec/data.hpp>
template<typename T>
using SyclHostAlloc = acpp::sycl::usm_allocator<saw::data<T>, acpp::sycl::usm::alloc::host>;
template<typename T>
using SyclDeviceAlloc = acpp::sycl::usm_allocator<saw::data<T>, acpp::sycl::usm::alloc::device>;
namespace kel {
namespace lbm {
namespace sch {
using namespace saw::schema;
/**
* Basic distribution function
* Base type
* D
* Q
* Scalar factor
* D factor
* Q factor
*/
using T = Float64;
using D2Q9 = Descriptor<2u,9u>;
using DfCell = Cell<T, D2Q9, 0u, 0u, 1u>;
using CellInfo = Cell<UInt8, D2Q9, 1u, 0u, 0u>;
/**
* Basic type for simulation
*/
using CellStruct = Struct<
Member<DfCell, "dfs">,
Member<DfCell, "dfs_old">,
Member<CellInfo, "info">
>;
template<typename T, uint64_t D>
using MacroStruct = Struct<
Member<FixedArray<T,D>, "velocity">,
Member<T, "pressure">
>;
}
namespace cmpt {
template<bool East>
struct PressureBoundaryRestrictedVelocityTo {};
}
/**
* This is massively hacky and expects a lot of conditions
* Either this or mirrored along the horizontal line works
*
* 0 - 2 - 2
* 0 - 3 - 1
* 0 - 3 - 1
* .........
* 0 - 3 - 1
* 0 - 2 - 2
*
*/
saw::error_or<void> set_geometry(
saw::data<sch::CellStruct>* cells,
const saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>>& meta,
acpp::sycl::queue& sycl_q
){
using namespace kel::lbm;
sycl_q.submit([&](acpp::sycl::handler& h){
h.parallel_for(acpp::sycl::range<2>{meta.at({0}).get(), meta.at({1}).get()},[=](acpp::sycl::id<2> idx){
size_t i = idx[0];
size_t j = idx[1];
size_t acc_id = j * meta.at({0u}).get() + i;
auto& c = cells[acc_id];
auto& info = c.template get<"info">()({0});
if(i >= 2u and j >= 2u and (i+2u) < meta.at({0u}).get() and (j+2u) < meta.at({1u}).get()){
// Fluid
info.set({2u});
}else if(((j+2u) == meta.at({1u}).get() or j == 1u) and (i>=1u and (i+1u)<meta.at({0u}).get() )){
// Wall
info.set({1u});
}else if((i==1u) and (j >= 1 and (j+1 < meta.at({1u}).get()) ) ){
// Left input
info.set({3u});
}else if((i+2u) == meta.at({0u}).get() and (j >= 1 and (j+1) < meta.at({1u}).get() )){
// Left output
info.set({4u});
}else {
info.set({0u});
}
});
});
return saw::make_void();
}
void set_initial_conditions(
saw::data<sch::CellStruct>* cells,
const saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>>& meta,
acpp::sycl::queue& sycl_q
){
using namespace kel::lbm;
saw::data<sch::T> rho{1.0};
saw::data<sch::FixedArray<sch::T,sch::D2Q9::D>> vel{{0.0,0.0}};
auto eq = equilibrium<sch::T,sch::D2Q9>(rho, vel);
}
void lbm_step(
saw::data<sch::CellStruct>* cells,
const saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>>& meta,
uint64_t time_step,
acpp::sycl::queue& sycl_q
){
using namespace kel::lbm;
using dfi = df_info<sch::T,sch::D2Q9>;
bool even_step = ((time_step % 2u) == 0u);
/**
* 1. Relaxation parameter \tau
*/
/*
component<sch::T, sch::D2Q9, cmpt::BGK> coll{0.5384};
component<sch::T, sch::D2Q9, cmpt::BounceBack> bb;
component<sch::T, sch::D2Q9, cmpt::PressureBoundaryRestrictedVelocityTo<true>> inlet{1.01 * dfi::cs2};
component<sch::T, sch::D2Q9, cmpt::PressureBoundaryRestrictedVelocityTo<false>> outlet{1.0 * dfi::cs2};
*/
}
}
}
template<typename T, typename Desc>
saw::error_or<void> kel_main(int argc, char** argv){
using namespace kel;
using dfi = lbm::df_info<T,Desc>;
auto eo_lbm_dir = lbm::output_directory();
if(eo_lbm_dir.is_error()){
return std::move(eo_lbm_dir.get_error());
}
auto& lbm_dir = eo_lbm_dir.get_value();
auto out_dir = lbm_dir / "poiseulle_channel_2d_gpu";
// Create Dir TODO
//
lbm::converter<lbm::sch::Float64> conv {
// delta_x
{{1.0}},
// delta_t
{{1.0}}
};
uint64_t x_d = 256u;
uint64_t y_d = 64u;
acpp::sycl::queue sycl_q;
SyclHostAlloc<lbm::sch::CellStruct> sycl_host_alloc{sycl_q};
// SyclDeviceAlloc<lbm::sch::CellStruct> sycl_dev_alloc{sycl_q};
std::vector<saw::data<lbm::sch::CellStruct>, SyclHostAlloc<lbm::sch::CellStruct>> host_cells{x_d * y_d,sycl_host_alloc};
saw::data<lbm::sch::CellStruct>* cells = acpp::sycl::malloc_device<saw::data<lbm::sch::CellStruct>>(x_d * y_d,sycl_q);
{
auto eov = lbm::set_geometry(cells,{{x_d,y_d}},sycl_q);
if(eov.is_error()){
return eov;
}
}
sycl_q.wait();
sycl_q.memcpy(&host_cells[0u], cells, x_d * y_d * sizeof(saw::data<lbm::sch::CellStruct>) );
sycl_q.wait();
acpp::sycl::free(cells, sycl_q);
sycl_q.wait();
std::string vtk_f_name{"tmp/poiseulle_2d_gpu_"};
vtk_f_name += std::to_string(0u) + ".vtk";
// write_vtk_file(vtk_f_name,host_cells);
for(uint64_t i = 0u; i < x_d; ++i){
for(uint64_t j = 0u; j < y_d; ++j){
size_t acc_id = j * x_d + i;
std::cout<<static_cast<uint64_t>(host_cells.at(acc_id).template get<"info">()({0u}).get())<<" ";
}
std::cout<<"\n";
}
std::cout<<std::endl;
return saw::make_void();
}
int main(int argc, char** argv){
auto eov = kel_main<kel::lbm::sch::T,kel::lbm::sch::D2Q9>(argc, argv);
if(eov.is_error()){
auto& err = eov.get_error();
std::cerr<<"[Error] "<<err.get_category();
auto err_msg = err.get_message();
if(err_msg.size() > 0u){
std::cerr<<" - "<<err_msg;
}
std::cerr<<std::endl;
return err.get_id();
}
return 0;
}
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