From d8321ed7a23f7554cd0144c4f5e8dc625bbee4fe Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 26 Feb 2026 14:35:57 +0100
Subject: Clean repo for run and make benchmarkable hlbm case

---
 examples/poiseulle_particles_2d_gpu/sim.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

(limited to 'examples/poiseulle_particles_2d_gpu')

diff --git a/examples/poiseulle_particles_2d_gpu/sim.cpp b/examples/poiseulle_particles_2d_gpu/sim.cpp
index 01fec89..fffcb31 100644
--- a/examples/poiseulle_particles_2d_gpu/sim.cpp
+++ b/examples/poiseulle_particles_2d_gpu/sim.cpp
@@ -10,9 +10,10 @@
 namespace kel {
 namespace lbm {
 
-constexpr uint64_t dim_x = 1024ul;
 constexpr uint64_t dim_y = 512ul;
-constexpr uint64_t particle_size = 1ul;
+constexpr uint64_t dim_x = dim_y * 20ul;
+
+constexpr uint64_t particle_amount = 1ul;
 
 namespace sch {
 using namespace saw::schema;
@@ -60,7 +61,7 @@ template<typename T, typename Desc>
 saw::error_or<void> setup_initial_conditions(
 		saw::data<sch::ChunkStruct<T,Desc>>& fields,
 		saw::data<sch::MacroStruct<T,Desc>>& macros,
-		saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_size>>& particles
+		saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_amount>>& particles
 ){
 	auto& info_f = fields.template get<"info">();
 	auto& porous_f = macros.template get<"porosity">();
@@ -158,14 +159,14 @@ saw::error_or<void> setup_initial_conditions(
 		df_f.get_dims()
 	);
 
-	for(saw::data<sch::UInt64> i{0u}; i < saw::data<sch::UInt64>{particle_size}; ++i){
+	for(saw::data<sch::UInt64> i{0u}; i < saw::data<sch::UInt64>{particle_amount}; ++i){
 		auto& part = particles.at(i);
 
 		saw::data<sch::Vector<T,Desc::D>> pos;
-		pos.at({{0u}}) = dim_x * 0.5;
+		pos.at({{0u}}) = dim_x * 0.25;
 		pos.at({{1u}}) = dim_y * 0.5;
 		saw::data<sch::Scalar<T>> rad, dense, dt;
-		rad.at({}) = dim_y * 0.2;
+		rad.at({}) = dim_y * 0.1;
 		dense.at({}) = 1.0;
 		dt.at({}) = 1.0;
 		part = create_spheroid_particle(
@@ -182,7 +183,7 @@ template<typename T, typename Desc>
 saw::error_or<void> step(
 		saw::data<sch::Ptr<sch::ChunkStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& fields,
 		saw::data<sch::Ptr<sch::MacroStruct<T,Desc>>,encode::Sycl<saw::encode::Native>>& macros,
-		saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_size>>& particles,
+		saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_amount>>& particles,
 		saw::data<sch::UInt64> t_i,
 		device& dev
 ){
@@ -321,7 +322,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 	// saw::data<sch::FixedArray<sch::UInt64,Desc::D>> meta{{dim_x,dim_y}};
 	auto lbm_data_ptr = saw::heap<saw::data<sch::ChunkStruct<T,Desc>>>();
 	auto lbm_macro_data_ptr = saw::heap<saw::data<sch::MacroStruct<T,Desc>>>();
-	auto lbm_particle_data_ptr = saw::heap<saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_size>>>();
+	auto lbm_particle_data_ptr = saw::heap<saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_amount>>>();
 	
 	std::cout<<"Estimated Bytes: "<<memory_estimate<sch::ChunkStruct<T,Desc>,sch::MacroStruct<T,Desc>>().get()<<std::endl;
 
@@ -355,7 +356,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 
 	saw::data<sch::ChunkStruct<T,Desc>, encode::Sycl<saw::encode::Native>> lbm_sycl_data{sycl_q};
 	saw::data<sch::MacroStruct<T,Desc>, encode::Sycl<saw::encode::Native>> lbm_sycl_macro_data{sycl_q};
-	saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_size>, encode::Sycl<saw::encode::Native>> lbm_sycl_particle_data{sycl_q};
+	saw::data<sch::FixedArray<sch::Particle<T,Desc::D>, particle_amount>, encode::Sycl<saw::encode::Native>> lbm_sycl_particle_data{sycl_q};
 	sycl_q.wait();
 
 	auto lsd_view = make_chunk_struct_view(lbm_sycl_data);
-- 
cgit v1.2.3


From 8f7b9a04e5d72a451c7e9bdc6cd084f5614dc56a Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 26 Feb 2026 14:40:59 +0100
Subject: Matched initial conditions to intention and added better CharVel
 values

---
 examples/poiseulle_particles_2d_gpu/sim.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'examples/poiseulle_particles_2d_gpu')

diff --git a/examples/poiseulle_particles_2d_gpu/sim.cpp b/examples/poiseulle_particles_2d_gpu/sim.cpp
index fffcb31..1832965 100644
--- a/examples/poiseulle_particles_2d_gpu/sim.cpp
+++ b/examples/poiseulle_particles_2d_gpu/sim.cpp
@@ -143,7 +143,7 @@ saw::error_or<void> setup_initial_conditions(
 	iterator<Desc::D>::apply(
 		[&](auto& index){
 			saw::data<sch::Vector<T,Desc::D>> middle, ind_vec;
-			middle.at({{0u}}) = dim_x * 0.5;
+			middle.at({{0u}}) = dim_x * 0.25;
 			middle.at({{1u}}) = dim_y * 0.5;
 
 			ind_vec.at({{0u}}) = index.at({{0u}}).template cast_to<T>();
@@ -151,7 +151,7 @@ saw::error_or<void> setup_initial_conditions(
 
 			auto dist = middle - ind_vec;
 			auto dist_2 = saw::math::dot(dist,dist);
-			if(dist_2.at({}).get() < 128*128){
+			if(dist_2.at({}).get() < dim_y*dim_y*0.01){
 				porous_f.at(index).at({}) = 0.0;
 			}
 		},
@@ -317,7 +317,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 		{{1.0}}
 	};
 	
-	print_lbm_meta<T,Desc>(conv,{0.01},{0.1},{1024.0});
+	print_lbm_meta<T,Desc>(conv,{0.01},{0.01},{0.4 * dim_y});
 
 	// saw::data<sch::FixedArray<sch::UInt64,Desc::D>> meta{{dim_x,dim_y}};
 	auto lbm_data_ptr = saw::heap<saw::data<sch::ChunkStruct<T,Desc>>>();
-- 
cgit v1.2.3