[DO NOT COMMIT] Repro stride issue

examples/models/checkpoint.py

@@ -31,15 +31,18 @@ def get_default_model_resource_dir(model_file_path: str) -> Path:
     """
 
     try:
+        import importlib
         import pkg_resources
 
         # 1st way: If we can import this path, we are running with buck2 and all resources can be accessed with pkg_resources.
         # pyre-ignore
+        model_name = Path(model_file_path).parent.name
         from executorch.examples.models.llama import params  # noqa
+        module = importlib.import_module(f"executorch.examples.models.{model_name}.params")
+        # params = module.params
 
         # Get the model name from the cwd, assuming that this module is called from a path such as
         # examples/models/<model_name>/model.py.
-        model_name = Path(model_file_path).parent.name
         resource_dir = Path(
             pkg_resources.resource_filename(
                 f"executorch.examples.models.{model_name}", "params"

examples/models/llama/export_llama_lib.py

@@ -175,7 +175,6 @@ def build_args_parser() -> argparse.ArgumentParser:
     parser.add_argument(
         "-c",
         "--checkpoint",
-        default=f"{ckpt_dir}/params/demo_rand_params.pth",
         help="checkpoint path",
     )
 
@@ -874,9 +873,9 @@ def _load_llama_model(
         An instance of LLMEdgeManager which contains the eager mode model.
     """
 
-    assert (
-        checkpoint or checkpoint_dir
-    ) and params_path, "Both checkpoint/checkpoint_dir and params can't be empty"
+    # assert (
+    #     checkpoint or checkpoint_dir
+    # ) and params_path, "Both checkpoint/checkpoint_dir and params can't be empty"
     logging.info(
         f"Loading model with checkpoint={checkpoint}, params={params_path}, use_kv_cache={use_kv_cache}, weight_type={weight_type}"
     )

examples/models/llama3_2_vision/text_decoder/model.py

@@ -58,7 +58,7 @@ def __init__(self, **kwargs):
 
         ckpt_dir = get_default_model_resource_dir(__file__)
         # Single checkpoint file.
-        checkpoint_path = kwargs.get("checkpoint", ckpt_dir / "demo_rand_params.pth")
+        checkpoint_path = kwargs.get("checkpoint") if kwargs.get("checkpoint") else ckpt_dir / "demo_rand_params.pth"
         if os.path.isfile(checkpoint_path):
             self.use_checkpoint = True
 

examples/models/llama3_2_vision/text_decoder/params/demo_config.json

@@ -6,7 +6,7 @@
   "multiple_of": 1024,
   "n_heads": 32,
   "n_kv_heads": 8,
-  "n_layers": 32,
+  "n_layers": 1,
   "n_special_tokens": 8,
   "norm_eps": 1e-05,
   "rope_theta": 500000.0,