From 4c9e43a42c15ce93ffded21dfcaa171f63d20d69 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 11 Jun 2026 14:07:27 +0200
Subject: Fixing deduction issues from constexpr values

---
 examples/poiseulle_particles_2d_gpu/common.hpp |  2 +-
 examples/poiseulle_particles_2d_gpu/init.hpp   |  7 +++++-
 examples/poiseulle_particles_2d_gpu/sim.cpp    | 35 ++++++++++++++++++--------
 examples/poiseulle_particles_2d_gpu/step.hpp   |  7 +++---
 4 files changed, 36 insertions(+), 15 deletions(-)

(limited to 'examples')

diff --git a/examples/poiseulle_particles_2d_gpu/common.hpp b/examples/poiseulle_particles_2d_gpu/common.hpp
index a69a2cf..6c05b64 100644
--- a/examples/poiseulle_particles_2d_gpu/common.hpp
+++ b/examples/poiseulle_particles_2d_gpu/common.hpp
@@ -55,7 +55,7 @@ using MacroStruct = Struct<
 >;
 
 template<typename T, typename Desc>
-using ParticleSpheroidGroup = ParticleGroup<T,Desc::D,ParticleCollisionSpheroid<T,2.0f>>;
+using ParticleSpheroidGroup = ParticleGroup<T,Desc::D,coll::Spheroid<T>>;
 }
 
 }
diff --git a/examples/poiseulle_particles_2d_gpu/init.hpp b/examples/poiseulle_particles_2d_gpu/init.hpp
index 70d59fc..617b296 100644
--- a/examples/poiseulle_particles_2d_gpu/init.hpp
+++ b/examples/poiseulle_particles_2d_gpu/init.hpp
@@ -7,10 +7,13 @@ namespace lbm {
 
 template<typename T, typename Desc>
 saw::error_or<void> setup_initial_conditions(
+		const converter<T>& conv,
 		saw::data<sch::ChunkStruct<T,Desc>>& fields,
 		saw::data<sch::MacroStruct<T,Desc>>& macros,
 		saw::data<sch::ParticleSpheroidGroup<T,Desc>>& particles
 ){
+	(void) conv;
+
 	auto& info_f = fields.template get<"info">();
 	auto& porous_f = macros.template get<"porosity">();
 	// Set everything as walls
@@ -110,9 +113,11 @@ saw::error_or<void> setup_initial_conditions(
 	);
 
 	{
+		saw::data<sch::Scalar<T>> radius_p;
+		radius_p.at({}).set(2);
 		saw::data<sch::Scalar<T>> dense_p;
 		dense_p.at({}).set(1);
-		particles = create_spheroid_particle_group<T,Desc::D,2.0f>(dense_p, {{16u}});
+		particles = create_spheroid_particle_group<T,Desc::D>(radius_p, dense_p, {{16u}});
 	}
 
 	return saw::make_void();
diff --git a/examples/poiseulle_particles_2d_gpu/sim.cpp b/examples/poiseulle_particles_2d_gpu/sim.cpp
index 42710f1..47c5daa 100644
--- a/examples/poiseulle_particles_2d_gpu/sim.cpp
+++ b/examples/poiseulle_particles_2d_gpu/sim.cpp
@@ -7,11 +7,16 @@
 /**
  * For deciding what parameters to use maybe?
  */
-namespace sch {
+namespace args {
 using namespace saw::schema;
 
+using LbmArgsStruct = Struct<
+	Member<UInt8,"use_slip">,
+	Member<String, "coupling">
+>;
+
 using LbmArgs = Args<
-	Struct<>,
+	LbmArgsStruct,
 	Tuple<>
 >;
 }
@@ -22,6 +27,13 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 
 	using dfi = df_info<T,Desc>;
 
+	auto eo_args = saw::parse_args<args::LbmArgs>(argc,argv);
+	if(eo_args.is_error()){
+		return std::move(eo_args.get_error());
+	}
+	auto& args = eo_args.get_value();
+	(void)args;
+
 	auto eo_lbm_dir = output_directory();
 	if(eo_lbm_dir.is_error()){
 		return std::move(eo_lbm_dir.get_error());
@@ -51,7 +63,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 	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::ParticleSpheroidGroup<T,Desc>>>();
-	
+
 	std::cout<<"Estimated Bytes: "<<memory_estimate<sch::ChunkStruct<T,Desc>,sch::MacroStruct<T,Desc>>().get()<<std::endl;
 
 	auto eo_aio = saw::setup_async_io();
@@ -76,7 +88,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 
 	sycl_q.wait();
 	{
-		auto eov = setup_initial_conditions<T,Desc>(*lbm_data_ptr,*lbm_macro_data_ptr,*lbm_particle_data_ptr);
+		auto eov = setup_initial_conditions<T,Desc>(conv,*lbm_data_ptr,*lbm_macro_data_ptr,*lbm_particle_data_ptr);
 		if(eov.is_error()){
 			return eov;
 		}
@@ -106,21 +118,24 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 		}
 	}
 	sycl_q.wait();
+
 	auto lsd_view = make_view(lbm_sycl_data);
 	auto lsdm_view = make_view(lbm_sycl_macro_data);
 	auto lsdp_view = make_view(lbm_sycl_particle_data);
 	
 	saw::data<sch::UInt64> time_steps{16u*4096ul};
+
 	auto& info_f = lsd_view.template get<"info">();
 
 	for(saw::data<sch::UInt64> i{0u}; i < time_steps and krun; ++i){
 		// BC + Collision
 		{
-			auto eov = step<T,Desc>(lsd_view,lsdm_view,lsdp_view,i,dev);
+			auto eov = step<T,Desc>(conv,lsd_view,lsdm_view,lsdp_view,i,dev);
 			if(eov.is_error()){
 				return eov;
 			}
 		}
+
 		sycl_q.wait();
 		if(i.get() % 32u == 0u){
 			{
@@ -145,22 +160,22 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 				for(uint64_t i = 0u; i < Desc::D; ++i){
 					index.at({{i}}).set(idx[i]);
 				}
-				
-				auto info = info_f.at(index);
-				
-				if(info.get() > 0u){
+
+				auto info = info_f.at(index).get();
+
+				if(info > 0u){
 					stream.apply(lsd_view,index,i);
 				}
 			});
 		}).wait();
 		wait.poll();
+
 		if(print_status){
 			std::cout<<"Status: "<<i.get()<<" of "<<time_steps.get()<<" - "<<(i.template cast_to<sch::Float64>().get() * 100 / time_steps.get())<<"%"<<std::endl;
 			print_status = false;
 		}
 		print_progress_bar(i.get(), time_steps.get()-1u);
 	}
-
 	// After Loop
 	sycl_q.wait();
 	{
diff --git a/examples/poiseulle_particles_2d_gpu/step.hpp b/examples/poiseulle_particles_2d_gpu/step.hpp
index a4e44b4..52e8c59 100644
--- a/examples/poiseulle_particles_2d_gpu/step.hpp
+++ b/examples/poiseulle_particles_2d_gpu/step.hpp
@@ -7,6 +7,7 @@ namespace lbm {
 
 template<typename T, typename Desc>
 saw::error_or<void> step(
+		const converter<T>& conv,
 		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::Ptr<sch::ParticleSpheroidGroup<T,Desc>>,encode::Sycl<saw::encode::Native>>& particles,
@@ -19,7 +20,8 @@ saw::error_or<void> step(
 
 	// auto coll_ev = 
 	q.submit([&](acpp::sycl::handler& h){
-		component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{0.65};
+		component<T,Desc,cmpt::Hlbm,encode::Sycl<saw::encode::Native>> collision{0.8};
+		component<T,Desc,cmpt::HlbmParticle,encode::Sycl<saw::encode::Native>> particle;
 		component<T,Desc,cmpt::BounceBack,encode::Sycl<saw::encode::Native>> bb;
 		component<T,Desc,cmpt::AntiBounceBack<0u>,encode::Sycl<saw::encode::Native>> abb;
 
@@ -32,7 +34,7 @@ saw::error_or<void> step(
 
 		component<T,Desc,cmpt::ZouHeHorizontal<true>,encode::Sycl<saw::encode::Native>> flow_in{
 			[&](){
-				uint64_t target_t_i = 64u;
+				uint64_t target_t_i = 16u;
 				if(t_i.get() < target_t_i){
 					return 1.0 + (0.0002 / target_t_i) * t_i.get();
 				}
@@ -41,7 +43,6 @@ saw::error_or<void> step(
 		};
 		component<T,Desc,cmpt::ZouHeHorizontal<false>,encode::Sycl<saw::encode::Native>> flow_out{1.0};
 
-
 		h.parallel_for(acpp::sycl::range<Desc::D>{dim_x,dim_y}, [=](acpp::sycl::id<Desc::D> idx){
 			saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
 			for(uint64_t i = 0u; i < Desc::D; ++i){
-- 
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