Standardize checkpoint filename and extension (Lightning-AI#142)

README.md

@@ -116,7 +116,7 @@ See `python generate.py --help` for more options.
 You can also use GPTQ-style int4 quantization, but this needs conversions of the weights first:
 
 ```bash
-python quantize.py --checkpoint_path state_dict.pth --tokenizer_path tokenizer.model --output_path llama-7b-gptq.4bit.pt --dtype bfloat16  --quantize gptq.int4
+python quantize.py --checkpoint_path lit-llama.pth --tokenizer_path tokenizer.model --output_path llama-7b-gptq.4bit.pth --dtype bfloat16  --quantize gptq.int4
 ```
 
 With the generated quantized checkpoint generation works as usual with `--quantize gptq.int4`, bringing GPU usage to about ~5GB. As only the weights of the Linear layers are quantized, it is useful to use `--dtype bfloat16` even with the quantization enabled.

evaluate.py

@@ -65,7 +65,7 @@ def main(
             ``"gptq.int4"``: GPTQ 4-bit mode.
     """
     if not checkpoint_path:
-        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/state_dict.pth")
+        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/lit-llama.pth")
     if not tokenizer_path:
         tokenizer_path = Path("./checkpoints/lit-llama/tokenizer.model")
     assert checkpoint_path.is_file()

finetune_adapter.py

@@ -26,7 +26,7 @@
 from lightning.fabric.strategies import DeepSpeedStrategy
 
 
-pretrained_path = "checkpoints/lit-llama/7B/state_dict.pth"
+pretrained_path = "checkpoints/lit-llama/7B/lit-llama.pth"
 out_dir = "out/adapter/alpaca"
 eval_interval = 600
 save_interval = 1000
@@ -95,7 +95,7 @@ def main():
     train(fabric, model, optimizer, train_data, val_data)
 
     # Save the final checkpoint at the end of training
-    save_model_checkpoint(fabric, model, os.path.join(out_dir, "alpaca-adapter-finetuned.ckpt"))
+    save_model_checkpoint(fabric, model, os.path.join(out_dir, "alpaca-adapter-finetuned.pth"))
 
 
 def train(
@@ -140,7 +140,7 @@ def train(
             if step_count % save_interval == 0:
                 print(f"Saving adapter weights to {out_dir}")
                 # TODO: Provide a function/script to merge the adapter weights with pretrained weights
-                save_model_checkpoint(fabric, model, os.path.join(out_dir, f"iter-{iter_num:06d}.ckpt"))
+                save_model_checkpoint(fabric, model, os.path.join(out_dir, f"iter-{iter_num:06d}.pth"))
 
         dt = time.time() - t0
         if iter_num % log_interval == 0:

finetune_lora.py

@@ -51,7 +51,7 @@ def main():
     config = LLaMAConfig.from_name("7B")
     config.block_size = block_size
 
-    checkpoint = torch.load("checkpoints/lit-llama/7B/state_dict.pth")
+    checkpoint = torch.load("checkpoints/lit-llama/7B/lit-llama.pth")
 
     with fabric.device, lora(r=lora_r, alpha=lora_alpha, dropout=lora_dropout, enabled=True):
         torch.set_default_tensor_type(torch.HalfTensor)
@@ -110,7 +110,7 @@ def train(
                 # We are only saving the LoRA weights
                 # TODO: Provide a function/script to merge the LoRA weights with pretrained weights
                 checkpoint = lora_state_dict(model)
-                fabric.save(os.path.join(out_dir, f"iter-{iter_num:06d}-ckpt.pt"), checkpoint)
+                fabric.save(os.path.join(out_dir, f"iter-{iter_num:06d}-ckpt.pth"), checkpoint)
 
         dt = time.time() - t0
         if iter_num % log_interval == 0:

generate.py

@@ -99,7 +99,7 @@ def main(
             ``"gptq.int4"``: GPTQ 4-bit mode.
     """
     if not checkpoint_path:
-        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/state_dict.pth")
+        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/lit-llama.pth")
     if not tokenizer_path:
         tokenizer_path = Path("./checkpoints/lit-llama/tokenizer.model")
     assert checkpoint_path.is_file()

generate_adapter.py

@@ -49,9 +49,9 @@ def main(
             ``"cpu"``, ``"cuda"``, ``"mps"``, ``"gpu"``, ``"tpu"``, ``"auto"``.
     """
     if not adapter_path:
-        adapter_path = Path("out/adapter/alpaca/alpaca-adapter-finetuned.pt")
+        adapter_path = Path("out/adapter/alpaca/alpaca-adapter-finetuned.pth")
     if not pretrained_path:
-        pretrained_path = Path(f"./checkpoints/lit-llama/7B/state_dict.pth")
+        pretrained_path = Path(f"./checkpoints/lit-llama/7B/lit-llama.pth")
     if not tokenizer_path:
         tokenizer_path = Path("./checkpoints/lit-llama/tokenizer.model")
 

lit_llama/utils.py

@@ -25,7 +25,7 @@ def save_model_checkpoint(fabric, model, file_path):
         fabric.barrier()
         if fabric.global_rank == 0:
             # Create a consolidated checkpoint with the same name next to the deepspeed checkpoint
-            convert_zero_checkpoint_to_fp32_state_dict(file_path, file_path.with_suffix(".pt"))
+            convert_zero_checkpoint_to_fp32_state_dict(file_path, file_path.with_suffix(".pth"))
         return
 
     if isinstance(fabric.strategy, FSDPStrategy):
@@ -54,7 +54,7 @@ def __init__(self, device=None, dtype=None, quantization_mode=None):
         Example::
             with EmptyInitOnDevice("cuda", dtype=torch.bfloat16):
                model = LLaMA.from_name('7B')
-            model.load_state_dict(torch.load('llama-lit/7B/state_dict.pth'))"""
+            model.load_state_dict(torch.load('llama-lit/7B/lit-llama.pth'))"""
 
         self.quantization_mode = quantization_mode
         self.quantized_linear_cls = None

quantize.py

@@ -163,7 +163,7 @@ def main(
             Note that ``"llm.int8"```does not need a quantization step.
     """
     if not checkpoint_path:
-        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/state_dict.pth")
+        checkpoint_path = Path(f"./checkpoints/lit-llama/{model_size}/lit-llama.pth")
     if not tokenizer_path:
         tokenizer_path = Path("./checkpoints/lit-llama/tokenizer.model")
     assert checkpoint_path.is_file()

scripts/convert_checkpoint.py

@@ -138,7 +138,7 @@ def meta_weights_for_nano_model(
         del attn
         gc.collect()
 
-    torch.save(combined, Path(output_dir, "state_dict.pth"))
+    torch.save(combined, Path(output_dir, "lit-llama.pth"))
 
 
 if __name__ == "__main__":

scripts/convert_hf_checkpoint.py

@@ -14,7 +14,7 @@
 def convert_hf_checkpoint(
     model_size: str = "7B",
     hf_checkpoint_path: Path = Path("checkpoints/llama-7b-hf"),
-    lit_checkpoint: Path = Path("checkpoints/lit-llama.ckpt"),
+    lit_checkpoint: Path = Path("checkpoints/lit-llama.pth"),
     verify: bool = False,
 ) -> None:
     """

train.py

@@ -93,7 +93,7 @@ def train(
             val_loss = validate(fabric, model, val_data)
             fabric.print(f"step {iter_num}: val loss {val_loss:.4f}")
             fabric.print(f"Saving checkpoint to {out_dir}")
-            save_model_checkpoint(fabric, model, os.path.join(out_dir, f"iter-{iter_num:06d}-ckpt.pt"))
+            save_model_checkpoint(fabric, model, os.path.join(out_dir, f"iter-{iter_num:06d}-ckpt.pth"))
 
         t0 = time.time()