From 9f9a22130ee10a0306a0bedf902b02805cbf1234 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Wed, 18 Mar 2026 16:16:43 +0100
Subject: Fix default builds referencing old naming schema

---
 default.nix | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/default.nix b/default.nix
index 2b99863..2232e47 100644
--- a/default.nix
+++ b/default.nix
@@ -162,11 +162,6 @@ in rec {
 			inherit kel;
 		};
 		
-		s_poiseulle_particles_2d_gpu = pkgs.callPackage ./examples/s_poiseulle_particles_2d_gpu/.nix/derivation.nix {
-			inherit pname version stdenv forstio adaptive-cpp;
-			inherit kel;
-		};
-
 		poiseulle_3d = pkgs.callPackage ./examples/poiseulle_3d/.nix/derivation.nix {
 			inherit pname version stdenv forstio adaptive-cpp;
 			inherit kel;
@@ -198,7 +193,9 @@ in rec {
 				kel.lbm.core
 				kel.lbm.sycl
 				examples.meta
-				examples.poiseulle_particles_2d_gpu
+				examples.poiseulle_particles_2d_bgk_gpu
+				examples.poiseulle_particles_2d_psm_gpu
+				examples.poiseulle_particles_2d_hlbm_gpu
 				examples.poiseulle_3d_gpu
 			];
 		};
-- 
cgit v1.2.3


From 48f58ebae7c82180ab756aa8af297de90b876f08 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 19 Mar 2026 12:13:28 +0100
Subject: Dangling changes

---
 examples/poiseulle_particles_2d_psm_gpu/sim.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/poiseulle_particles_2d_psm_gpu/sim.cpp b/examples/poiseulle_particles_2d_psm_gpu/sim.cpp
index cf68d24..ff636ca 100644
--- a/examples/poiseulle_particles_2d_psm_gpu/sim.cpp
+++ b/examples/poiseulle_particles_2d_psm_gpu/sim.cpp
@@ -286,7 +286,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 	}
 	auto& lbm_dir = eo_lbm_dir.get_value();
 
-	auto out_dir = lbm_dir / "poiseulle_particles_2d_gpu";
+	auto out_dir = lbm_dir / "poiseulle_particles_2d_psm_gpu";
 
 	{
 		std::error_code ec;
@@ -385,6 +385,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 			}
 		}
 		sycl_q.wait();
+		/*
 		{
 			{
 				auto eov = dev.copy_to_host(lbm_sycl_macro_data,*lbm_macro_data_ptr);
@@ -399,6 +400,7 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 				}
 			}
 		}
+		*/
 		/*
 		{
 			{
@@ -442,6 +444,12 @@ saw::error_or<void> lbm_main(int argc, char** argv){
 
 	// After Loop
 	sycl_q.wait();
+	{
+		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",time_steps.get(), *lbm_macro_data_ptr);
 		if(eov.is_error()){
-- 
cgit v1.2.3


From df2ce610f0389edb0583fed15eaabe5d21518fb5 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Thu, 19 Mar 2026 12:37:17 +0100
Subject: Add AntiBounce Back as well

---
 lib/core/c++/boundary.hpp | 52 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/lib/core/c++/boundary.hpp b/lib/core/c++/boundary.hpp
index 9afdfd7..3503681 100644
--- a/lib/core/c++/boundary.hpp
+++ b/lib/core/c++/boundary.hpp
@@ -8,6 +8,9 @@ namespace lbm {
 namespace cmpt {
 struct BounceBack {};
 
+template<uint64_t i>
+struct AntiBounceBack {};
+
 template<bool East>
 struct ZouHeHorizontal{};
 
@@ -69,6 +72,55 @@ public:
 	}
 };
 
+/**
+ * Anti Full-Way BounceBack.
+ */
+template<typename T, typename Descriptor, uint64_t D, typename Encode>
+class component<T, Descriptor, cmpt::AntiBounceBack<D>, Encode> {
+private:
+public:
+	component() = default;
+
+	using Component = cmpt::AntiBounceBack<D>;
+
+	/**
+	 * Thoughts regarding automating order setup
+	 */
+	using access = cmpt::access_tuple<
+		cmpt::access<"dfs", 1, true, true, true>
+	>;
+
+	/**
+	 * Thoughts regarding automating order setup
+	 */
+	static constexpr saw::string_literal name = "full_way_anti_bounce_back";
+	static constexpr saw::string_literal after = "";
+	static constexpr saw::string_literal before = "streaming";
+
+	/**
+	 * Raw setup
+	 */
+	template<typename CellFieldSchema>
+	void apply(const saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step)const{
+		bool is_even = ((time_step.get() % 2u) == 0u);
+
+		// This is a ref
+
+		// auto& dfs_f = (is_even) ? field.template get<"dfs">() : field.template get<"dfs_old">();
+		auto& dfs_old_f = (is_even) ? field.template get<"dfs_old">() : field.template get<"dfs">();
+
+		using dfi = df_info<T,Descriptor>;
+
+		// Technically use .copy()
+		auto& dfs_old = dfs_old_f.at(index);
+		auto df_cpy = dfs_old;
+
+		for(uint64_t i = 0u; i < Descriptor::Q; ++i){
+			dfs_old.at({i}) = df_cpy.at({dfi::opposite_index.at(i)});
+		}
+	}
+};
+
 template<typename FP, typename Descriptor, typename Encode>
 class component<FP, Descriptor, cmpt::Equilibrium, Encode> final {
 private:
-- 
cgit v1.2.3