diff --git a/end_to_end/tpu/eval_assert.py b/end_to_end/tpu/eval_assert.py
new file mode 100644
index 0000000..0bf02c2
--- /dev/null
+++ b/end_to_end/tpu/eval_assert.py
@@ -0,0 +1,59 @@
+"""
+ Copyright 2024 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ """
+
+# pylint: skip-file
+"""Reads and asserts over target values"""
+from absl import app
+from typing import Sequence
+import json
+
+def get_last_n_data(metrics_file, target, n=10):
+  last_n_data = []
+  with open(metrics_file, 'r', encoding='utf8') as file:
+    lines = file.readlines()
+    for line in lines[::-1]:
+      metrics = json.loads(line)
+      if target in metrics:
+        last_n_data.append(metrics[target])
+        if len(last_n_data) >= n:
+          break
+  return last_n_data
+      
+
+def test_final_loss(metrics_file, target_loss):
+  target_loss = float(target_loss)
+  with open(metrics_file, 'r', encoding='utf8') as metrics:
+    use_last_n_data = 10
+    last_n_data = get_last_n_data(metrics_file, 'learning/loss', use_last_n_data)
+    avg_last_n_data = sum(last_n_data) / len(last_n_data)
+    print(f"Mean of last {len(last_n_data)} losses is {avg_last_n_data}")
+    print(f"Target loss is {target_loss}")
+    assert avg_last_n_data < target_loss
+    print('Final loss test passed.')
+
+
+def main(argv: Sequence[str]) -> None:
+
+  _, test_scenario, *test_vars = argv
+
+  if test_scenario == 'final_loss':
+    test_final_loss(*test_vars)
+  else:
+     raise ValueError(f"Unrecognized test_scenario {test_scenario}")
+
+
+if __name__ == "__main__":
+  app.run(main)
\ No newline at end of file
diff --git a/end_to_end/tpu/test_sdxl_training_loss.sh b/end_to_end/tpu/test_sdxl_training_loss.sh
new file mode 100644
index 0000000..44fa2e2
--- /dev/null
+++ b/end_to_end/tpu/test_sdxl_training_loss.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+set -ex
+
+echo "Running test_sdxl_training_loss.sh"
+
+# Set environment variables
+for ARGUMENT in "$@"; do
+    IFS='=' read -r KEY VALUE <<< "$ARGUMENT"
+    export "$KEY"="$VALUE"
+done
+
+TRAIN_CMD="python src/maxdiffusion/train_sdxl.py src/maxdiffusion/configs/base_xl.yml \
+        pretrained_model_name_or_path=gs://maxdiffusion-github-runner-test-assets/checkpoints/models--stabilityai--stable-diffusion-xl-base-1.0 \
+        revision=refs/pr/95 activations_dtype=bfloat16 weights_dtype=bfloat16 metrics_file=metrics.txt write_metrics=True \
+        dataset_name=gs://jfacevedo-maxdiffusion-v5p/pokemon-datasets/pokemon-gpt4-captions_xl resolution=1024 per_device_batch_size=1 \
+        jax_cache_dir=gs://jfacevedo-maxdiffusion/cache_dir/ max_train_steps=$STEPS attention=flash run_name=sdxl-fsdp-v5p-64-ddp enable_profiler=True  \
+        run_name=$RUN_NAME \
+        output_dir=$OUTPUT_DIR "
+
+# Train
+export LIBTPU_INIT_ARGS=""
+$TRAIN_CMD
+
+# Assert training loss is smaller than input LOSS_THRESHOLD
+python3 end_to_end/tpu/eval_assert.py final_loss metrics.txt $LOSS_THRESHOLD
\ No newline at end of file
diff --git a/src/maxdiffusion/trainers/sdxl_trainer.py b/src/maxdiffusion/trainers/sdxl_trainer.py
index e746b1b..b52b752 100644
--- a/src/maxdiffusion/trainers/sdxl_trainer.py
+++ b/src/maxdiffusion/trainers/sdxl_trainer.py
@@ -188,7 +188,7 @@ def training_loop(self, p_train_step, pipeline, params, train_states, data_itera
         num_model_parameters = max_utils.calculate_num_params_from_pytree(unet_state.params)
 
         max_utils.add_text_to_summary_writer("number_model_parameters", str(num_model_parameters), writer)
-        max_utils.add_text_to_summary_writer("libtpu_init_args", os.environ["LIBTPU_INIT_ARGS"], writer)
+        max_utils.add_text_to_summary_writer("libtpu_init_args", os.environ.get("LIBTPU_INIT_ARGS",""), writer)
         max_utils.add_config_to_summary_writer(self.config, writer)
 
         if jax.process_index() == 0: