From 4ec94c97879aafef15f7663135745e4ba61e62cf Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 17 May 2021 00:15:33 +0200
Subject: Extract first public LiterateLB version

---
 tangle/LLBM/lattice.h | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 tangle/LLBM/lattice.h

(limited to 'tangle/LLBM/lattice.h')

diff --git a/tangle/LLBM/lattice.h b/tangle/LLBM/lattice.h
new file mode 100644
index 0000000..8ba1d66
--- /dev/null
+++ b/tangle/LLBM/lattice.h
@@ -0,0 +1,131 @@
+#pragma once
+
+#include "memory.h"
+#include "call_tag.h"
+#include "operator.h"
+
+#include "propagate.h"
+#include "kernel/initialize.h"
+#include "kernel/executor.h"
+
+template <typename DESCRIPTOR, typename T, typename S=T>
+class Lattice {
+private:
+const descriptor::Cuboid<DESCRIPTOR> _cuboid;
+
+CyclicPopulationBuffer<DESCRIPTOR,S> _population;
+
+public:
+Lattice(descriptor::Cuboid<DESCRIPTOR> cuboid):
+  _cuboid(cuboid),
+  _population(cuboid) { }
+
+descriptor::Cuboid<DESCRIPTOR> cuboid() const {
+  return _cuboid;
+}
+
+void stream() {
+  _population.stream();
+}
+
+template <typename... OPERATOR>
+void apply(OPERATOR... ops) {
+  const auto block_size = 32;
+  const auto block_count = (_cuboid.volume + block_size - 1) / block_size;
+  kernel::call_operators<DESCRIPTOR,T,S,OPERATOR...><<<block_count,block_size>>>(
+    _population.view(), ops...
+  );
+}
+
+template <typename OPERATOR, typename... ARGS>
+void apply(ARGS&&... args) {
+  call_operator<OPERATOR>(typename OPERATOR::call_tag{}, std::forward<ARGS&&>(args)...);
+}
+
+template <typename OPERATOR, typename... ARGS>
+void call_operator(tag::call_by_cell_id, DeviceBuffer<std::size_t>& cells, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (cells.size() + block_size - 1) / block_size;
+  kernel::call_operator<OPERATOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    _population.view(), cells.device(), cells.size(), std::forward<ARGS>(args)...
+  );
+}
+
+template <typename OPERATOR, typename... ARGS>
+void call_operator(tag::call_by_cell_id, DeviceBuffer<bool>& mask, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (_cuboid.volume + block_size - 1) / block_size;
+  kernel::call_operator<OPERATOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    _population.view(), mask.device(), std::forward<ARGS>(args)...
+  );
+}
+
+template <typename OPERATOR, typename... ARGS>
+void call_operator(tag::call_by_list_index, std::size_t count, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (count + block_size - 1) / block_size;
+  kernel::call_operator_using_list<OPERATOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    _population.view(), count, std::forward<ARGS>(args)...
+  );
+}
+
+template <typename FUNCTOR, typename... ARGS>
+void inspect(ARGS&&... args) {
+  call_functor<FUNCTOR>(typename FUNCTOR::call_tag{}, std::forward<ARGS&&>(args)...);
+}
+
+template <typename FUNCTOR, typename... ARGS>
+void call_functor(tag::call_by_cell_id, DeviceBuffer<std::size_t>& cells, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (cells.size() + block_size - 1) / block_size;
+  kernel::call_functor<FUNCTOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    _population.view(), cells.device(), cells.size(), std::forward<ARGS>(args)...
+  );
+}
+
+template <typename FUNCTOR, typename... ARGS>
+void call_functor(tag::call_by_cell_id, DeviceBuffer<bool>& mask, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (_cuboid.volume + block_size - 1) / block_size;
+  kernel::call_functor<FUNCTOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    _population.view(), mask.device(), std::forward<ARGS>(args)...
+  );
+}
+
+template <typename FUNCTOR, typename... ARGS>
+void call_functor(tag::call_by_spatial_cell_mask, DeviceBuffer<bool>& mask, ARGS... args) {
+  const dim3 block(32,8,4);
+  const dim3 grid((_cuboid.nX + block.x - 1) / block.x,
+                  (_cuboid.nY + block.y - 1) / block.y,
+                  (_cuboid.nZ + block.z - 1) / block.z);
+  kernel::call_spatial_functor<FUNCTOR,DESCRIPTOR,T,S,ARGS...><<<grid,block>>>(
+    _population.view(), mask.device(), std::forward<ARGS>(args)...
+  );
+}
+
+template <typename OPERATOR, typename... ARGS>
+void helper(ARGS&&... args) {
+  tagged_helper<OPERATOR>(typename OPERATOR::call_tag{}, std::forward<ARGS&&>(args)...);
+}
+
+template <typename OPERATOR, typename... ARGS>
+void tagged_helper(tag::post_process_by_list_index, std::size_t count, ARGS... args) {
+  const auto block_size = 32;
+  const auto block_count = (count + block_size - 1) / block_size;
+  kernel::call_operator_using_list<OPERATOR,DESCRIPTOR,T,S,ARGS...><<<block_count,block_size>>>(
+    DESCRIPTOR(), count, std::forward<ARGS>(args)...
+  );
+}
+
+template <typename OPERATOR, typename... ARGS>
+void tagged_helper(tag::post_process_by_spatial_cell_mask, DeviceBuffer<bool>& mask, ARGS... args) {
+  const dim3 block(32,8,4);
+  const dim3 grid((_cuboid.nX + block.x - 1) / block.x,
+                  (_cuboid.nY + block.y - 1) / block.y,
+                  (_cuboid.nZ + block.z - 1) / block.z);
+  kernel::call_spatial_operator<OPERATOR,DESCRIPTOR,T,S,ARGS...><<<grid,block>>>(
+    _cuboid, mask.device(), std::forward<ARGS>(args)...
+  );
+}
+
+};
-- 
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