Missing update

Signed-off-by: Mustafa Eyceoz <meyceoz@redhat.com>

src/instructlab/training/main_ds.py

@@ -4,6 +4,7 @@
 from copy import deepcopy
 from pathlib import Path
 import argparse
+import json
 import math
 import os
 import re
@@ -650,6 +651,16 @@ def run_training(torch_args: TorchrunArgs, train_args: TrainingArgs) -> None:
             f"the `max_batch_len` cannot be less than `max_seq_len`: {train_args.max_batch_len=} < {train_args.max_seq_len=}"
         )
 
+    if os.path.exists(train_args.model_path):
+        if not os.path.isdir(train_args.model_path):
+            raise RuntimeError(
+                "Model path does not appear to be a dir, please validate or update the path"
+            )
+    else:
+        raise RuntimeError(
+            "Model Path cannot be found, please verify existense and permissions"
+        )
+
     # process the training data
     if not os.path.exists(train_args.data_output_dir):
         os.makedirs(train_args.data_output_dir, exist_ok=True)
@@ -705,6 +716,12 @@ def run_training(torch_args: TorchrunArgs, train_args: TrainingArgs) -> None:
             command.append(f"--mock_len={train_args.mock_len}")
 
     if train_args.use_dolomite:
+        with open(Path(train_args.model_path) / "config.json") as conf_json:
+            model_conf = json.load(conf_json)
+        if model_conf["model_type"] == "granite":
+            raise RuntimeError(
+                "Converting Granite models to Dolomite format is currently unsupported."
+            )
         command.append("--use_dolomite")
 
     if train_args.disable_flash_attn: