Create biergarten brewery pipeline project (#199)

pipeline/src/data_generation/llama/load.cc

@@ -0,0 +1,43 @@
+/**
+ * @file data_generation/llama/load.cc
+ * @brief Initializes llama backend, loads model weights, creates inference
+ * context, and resets prior resources during model initialization.
+ */
+
+#include <spdlog/spdlog.h>
+
+#include <algorithm>
+#include <stdexcept>
+#include <string>
+#include <utility>
+
+#include "data_generation/llama_generator.h"
+#include "llama.h"
+
+void LlamaGenerator::Load(const std::string& model_path) {
+  context_.reset();
+  model_.reset();
+
+  const llama_model_params model_params = llama_model_default_params();
+  LlamaGenerator::ModelHandle loaded_model(
+      llama_model_load_from_file(model_path.c_str(), model_params));
+  if (!loaded_model) {
+    throw std::runtime_error(
+        "LlamaGenerator: failed to load model from path: " + model_path);
+  }
+
+  llama_context_params context_params = llama_context_default_params();
+  context_params.n_ctx = n_ctx_;
+  context_params.n_batch = std::min(n_ctx_, static_cast<uint32_t>(5000));
+
+  LlamaGenerator::ContextHandle loaded_context(
+      llama_init_from_model(loaded_model.get(), context_params));
+  if (!loaded_context) {
+    throw std::runtime_error("LlamaGenerator: failed to create context");
+  }
+
+  model_ = std::move(loaded_model);
+  context_ = std::move(loaded_context);
+
+  spdlog::info("[LlamaGenerator] Loaded model: {}", model_path);
+}