From 1693f8ccb3fbdbc8a1bd35a5ffde684ca4c68a3f Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sat, 18 Jul 2026 21:45:14 +0200
Subject: Dangling

---
 .../moving_poiseulle_particles_2d_hlbm_gpu/sim.cpp | 29 +++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

(limited to 'examples')

diff --git a/examples/moving_poiseulle_particles_2d_hlbm_gpu/sim.cpp b/examples/moving_poiseulle_particles_2d_hlbm_gpu/sim.cpp
index a4cae03..a41d2b7 100644
--- a/examples/moving_poiseulle_particles_2d_hlbm_gpu/sim.cpp
+++ b/examples/moving_poiseulle_particles_2d_hlbm_gpu/sim.cpp
@@ -146,7 +146,7 @@ saw::error_or<void> setup_initial_conditions(
 	);
 
 	saw::data<sch::Scalar<T>> rad;
-	rad.at({}) = 2.0f;
+	rad.at({}) = dim_y * 0.1f;
 	saw::data<sch::Scalar<T>> dense;
 	dense.at({}) = 1.0f;
 	particles = create_spheroid_particle_group<T,Desc::D,particle_amount>(rad,dense,{16u});
@@ -173,6 +173,18 @@ saw::error_or<void> step(
 	auto& info_f = fields.template get<"info">();
 	auto& porous_f = macros.template get<"porosity">();
 
+	q.submit([&](acpp::sycl::handler& h){
+		component<T,Desc,cmpt::HlbmReset,encode::Sycl<saw::encode::Native>> hlbm_reset;
+		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){
+				index.at({{i}}).set(idx[i]);
+			}
+
+			hlbm_reset.apply(fields,macros,index,t_i);
+		});
+	}).wait();
+
 	q.submit([&](acpp::sycl::handler& h){
 		component<T,Desc,cmpt::HlbmOneParticle,encode::Sycl<saw::encode::Native>> hlbm_one_part;
 
@@ -361,6 +373,21 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 		}
 		sycl_q.wait();
 
+		if( i.get() % 128u == 0u){
+			{
+				auto eov = dev.copy_to_host(lbm_sycl_macro_data,*lbm_macro_data_ptr);
+				if(eov.is_error()){
+					return eov;
+				}
+			}
+			{
+				auto eov = write_vtk_file(out_dir,"m",i.get(), *lbm_macro_data_ptr);
+				if(eov.is_error()){
+					return eov;
+				}
+			}
+		}
+
 		// Stream
 		sycl_q.submit([&](acpp::sycl::handler& h){
 			component<T,Desc,cmpt::Stream,encode::Sycl<saw::encode::Native>> stream;
-- 
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