//
// Step 1: first run
//
// other code
config.SetModel(/*model dir*/);
// other code
config.EnableUseGpu(...); // for gpu
config.EnableTensorRtEngine(..., use_static=true, ...). // for tensorrt
// other code
config.SwitchIrOptim(true);
config.SetOptimCacheDir("./optim_cache");
config.EnableSaveOptimModel(true);
// other code
auto predictor = CreatePredictor(config);
// Optimized model will be save to ./optim_cache/_optimized.*
//
// Step 2: second run
//
// other code
config.SetModel(/*optimized model dir*/);
// other code
config.EnableUseGpu(...); // for gpu
config.EnableTensorRtEngine(..., use_static=true, ...). // for tensorrt
// other code
config.SwitchIrOptim(false);
// other code
auto predictor = CreatePredictor(config);
// other code
predictor->Run();
// other code