Created
December 4, 2025 09:49
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| #include "NvInfer.h" | |
| #include "NvOnnxParser.h" | |
| #include <fstream> | |
| #include <iostream> | |
| using namespace nvinfer1; | |
| // ロガー | |
| class Logger : public ILogger { | |
| public: | |
| void log(Severity severity, const char* msg) noexcept override { | |
| if (severity <= Severity::kINFO) | |
| std::cout << msg << std::endl; | |
| } | |
| } gLogger; | |
| int main() | |
| { | |
| IBuilder* builder = createInferBuilder(gLogger); | |
| // explicitBatch | |
| const auto explicitBatch = | |
| 1U << static_cast<uint32_t>(NetworkDefinitionCreationFlag::kEXPLICIT_BATCH); | |
| INetworkDefinition* network = builder->createNetworkV2(explicitBatch); | |
| // ONNX パーサ | |
| auto parser = nvonnxparser::createParser(*network, gLogger); | |
| if (!parser->parseFromFile("my.onnx", static_cast<int>(ILogger::Severity::kWARNING))) { | |
| std::cerr << "ERROR: Failed to parse ONNX file" << std::endl; | |
| return -1; | |
| } | |
| // BuilderConfig | |
| IBuilderConfig* config = builder->createBuilderConfig(); | |
| // FP16 有効化 | |
| if (builder->platformHasFastFp16()) { | |
| config->setFlag(BuilderFlag::kFP16); | |
| } | |
| // ★ trtexec と同じ Workspace サイズ（16 MiB）を設定 | |
| const size_t workspaceSize = 1ULL << 24; // 16 MiB | |
| config->setMemoryPoolLimit( | |
| MemoryPoolType::kWORKSPACE, | |
| workspaceSize | |
| ); | |
| // エンジン生成 | |
| ICudaEngine* engine = builder->buildEngineWithConfig(*network, *config); | |
| if (!engine) { | |
| std::cerr << "ERROR: Engine build failed!" << std::endl; | |
| return -1; | |
| } | |
| // 序列化して保存 | |
| IHostMemory* serializedEngine = engine->serialize(); | |
| std::ofstream ofs("output.trt", std::ios::binary); | |
| ofs.write((char*)serializedEngine->data(), serializedEngine->size()); | |
| ofs.close(); | |
| // 後処理 | |
| serializedEngine->destroy(); | |
| engine->destroy(); | |
| parser->destroy(); | |
| network->destroy(); | |
| config->destroy(); | |
| builder->destroy(); | |
| return 0; | |
| } |
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