Added output path for optimize model

GANDLF/cli/post_training_model_optimization.py

@@ -1,16 +1,21 @@
 import os
+from pathlib import Path
+from typing import Optional
 from GANDLF.compute import create_pytorch_objects
 from GANDLF.config_manager import ConfigManager
 from GANDLF.utils import version_check, load_model, optimize_and_save_model
 
 
-def post_training_model_optimization(model_path: str, config_path: str) -> bool:
+def post_training_model_optimization(
+    model_path: str, config_path: Optional[str] = None, output_dir: Optional[str] = None
+) -> bool:
     """
     CLI function to optimize a model for deployment.
 
     Args:
         model_path (str): Path to the model file.
-        config_path (str): Path to the config file.
+        config_path (str, optional): Path to the configuration file.
+        output_dir (str, optional): Output directory to save the optimized model.
 
     Returns:
         bool: True if successful, False otherwise.
@@ -26,6 +31,12 @@ def post_training_model_optimization(model_path: str, config_path: str) -> bool:
         else parameters
     )
 
+    output_dir = os.path.dirname(model_path) if output_dir is None else output_dir
+    Path(output_dir).mkdir(parents=True, exist_ok=True)
+    optimized_model_path = os.path.join(
+        output_dir, os.path.basename(model_path).replace("pth.tar", "onnx")
+    )
+
     # Create PyTorch objects and set onnx_export to True for optimization
     model, _, _, _, _, parameters = create_pytorch_objects(parameters, device="cpu")
     parameters["model"]["onnx_export"] = True
@@ -35,10 +46,9 @@ def post_training_model_optimization(model_path: str, config_path: str) -> bool:
     model.load_state_dict(main_dict["model_state_dict"])
 
     # Optimize the model and save it to an ONNX file
-    optimize_and_save_model(model, parameters, model_path, onnx_export=True)
+    optimize_and_save_model(model, parameters, optimized_model_path, onnx_export=True)
 
     # Check if the optimized model file exists
-    optimized_model_path = model_path.replace("pth.tar", "onnx")
     if not os.path.exists(optimized_model_path):
         print("Error while optimizing the model.")
         return False

GANDLF/entrypoints/optimize_model.py

@@ -11,8 +11,12 @@
 from GANDLF.entrypoints import append_copyright_to_help
 
 
-def _optimize_model(model: str, config: Optional[str]):
-    if post_training_model_optimization(model_path=model, config_path=config):
+def _optimize_model(
+    model: str, config: Optional[str], output_path: Optional[str] = None
+):
+    if post_training_model_optimization(
+        model_path=model, config_path=config, output_path=output_path
+    ):
         print("Post-training model optimization successful.")
     else:
         print("Post-training model optimization failed.")
@@ -26,6 +30,13 @@ def _optimize_model(model: str, config: Optional[str]):
     required=True,
     help="Path to the model file (ending in '.pth.tar') you wish to optimize.",
 )
+@click.option(
+    "--output-path",
+    "-o",
+    type=click.Path(file_okay=False, dir_okay=True),
+    required=False,
+    help="Location to save the optimized model, defaults to location of `model`",
+)
 @click.option(
     "--config",
     "-c",
@@ -35,9 +46,11 @@ def _optimize_model(model: str, config: Optional[str]):
     type=click.Path(exists=True, file_okay=True, dir_okay=False),
 )
 @append_copyright_to_help
-def new_way(model: str, config: Optional[str]):
+def new_way(
+    model: str, config: Optional[str] = None, output_path: Optional[str] = None
+):
     """Generate optimized versions of trained GaNDLF models."""
-    _optimize_model(model=model, config=config)
+    _optimize_model(model=model, config=config, output_path=output_path)
 
 
 # old-fashioned way of running gandlf via `gandlf_optimizeModel`.
@@ -62,6 +75,16 @@ def old_way():
         help="Path to the model file (ending in '.pth.tar') you wish to optimize.",
         required=True,
     )
+    parser.add_argument(
+        "-o",
+        "--outputdir",
+        "--output_path",
+        metavar="",
+        type=str,
+        default=None,
+        help="Location to save the optimized model, defaults to location of `model`",
+        required=False,
+    )
     parser.add_argument(
         "-c",
         "--config",
@@ -74,7 +97,7 @@ def old_way():
     )
 
     args = parser.parse_args()
-    _optimize_model(model=args.model, config=args.config)
+    _optimize_model(model=args.model, config=args.config, output_path=args.outputdir)
 
 
 if __name__ == "__main__":

GANDLF/utils/modelio.py

@@ -26,15 +26,18 @@
 
 
 def optimize_and_save_model(
-    model: torch.nn.Module, params: dict, path: str, onnx_export: Optional[bool] = True
+    model: torch.nn.Module,
+    params: dict,
+    output_path: str,
+    onnx_export: Optional[bool] = True,
 ) -> None:
     """
     Perform post-training optimization and save it to a file.
 
     Args:
         model (torch.nn.Module): Trained torch model.
         params (dict): The parameter dictionary.
-        path (str): The path to save the model dictionary to.
+        output_path (str): The path to save the optimized model to.
         onnx_export (Optional[bool]): Whether to export to ONNX and OpenVINO. Defaults to True.
     """
     # Check if ONNX export is enabled in the parameter dictionary
@@ -59,9 +62,7 @@ def optimize_and_save_model(
             num_channel = params["model"]["num_channels"]
             model_dimension = params["model"]["dimension"]
             input_shape = params["patch_size"]
-            onnx_path = path
-            if not onnx_path.endswith(".onnx"):
-                onnx_path = onnx_path.replace("pth.tar", "onnx")
+            onnx_path = output_path.replace(".pth.tar", ".onnx")
 
             if model_dimension == 2:
                 dummy_input = torch.randn(

testing/entrypoints/test_optimize_model.py

@@ -17,8 +17,28 @@
     TmpFile("model.pth.tar", content="123321"),
     TmpFile("config.yaml", content="foo: bar"),
     TmpNoEx("path_na"),
+    TmpDire("output/"),
 ]
 test_cases = [
+    CliCase(
+        should_succeed=True,
+        new_way_lines=[
+            # full command with output
+            "--model model.pth.tar --config config.yaml --output-path output/",
+            # tests short arg aliases
+            "-m model.pth.tar -c config.yaml -o output/",
+        ],
+        old_way_lines=[
+            "--model model.pth.tar --config config.yaml --output_path output/",
+            "-m model.pth.tar -c config.yaml -o output/",
+        ],
+        expected_args={
+            "model_path": "model.pth.tar",
+            "config_path": "config.yaml",
+            "output_path": "output/",
+            "output_dir": None,
+        },
+    ),
     CliCase(
         should_succeed=True,
         new_way_lines=[
@@ -31,7 +51,12 @@
             "--model model.pth.tar --config config.yaml",
             "-m model.pth.tar -c config.yaml",
         ],
-        expected_args={"model_path": "model.pth.tar", "config_path": "config.yaml"},
+        expected_args={
+            "model_path": "model.pth.tar",
+            "config_path": "config.yaml",
+            "output_dir": None,
+            "output_path": None,
+        },
     ),
     CliCase(
         should_succeed=True,
@@ -40,7 +65,12 @@
             "-m model.pth.tar"
         ],
         old_way_lines=["-m model.pth.tar"],
-        expected_args={"model_path": "model.pth.tar", "config_path": None},
+        expected_args={
+            "model_path": "model.pth.tar",
+            "config_path": None,
+            "output_path": None,
+            "output_dir": None,
+        },
     ),
     CliCase(
         should_succeed=False,

testing/test_full.py

@@ -782,7 +782,9 @@ def test_train_inference_optimize_classification_rad_3d(device):
     # file_config_temp = write_temp_config_path(parameters_temp)
     model_path = os.path.join(outputDir, all_models_regression[0] + "_best.pth.tar")
     config_path = os.path.join(outputDir, "parameters.pkl")
-    optimization_result = post_training_model_optimization(model_path, config_path)
+    optimization_result = post_training_model_optimization(
+        model_path, config_path, outputDir
+    )
     assert optimization_result == True, "Optimization should pass"
 
     ## testing inference