export phi-3-mini-wrapper (#4478)

Summary:
Pull Request resolved: #4478

imported-using-ghimport

Test Plan: Imported from OSS

Reviewed By: iseeyuan

Differential Revision: D60483506

Pulled By: helunwencser

fbshipit-source-id: f5f019035af66af6380186e4bc57a949e6cc5480

Author: helunwencser

examples/models/phi-3-mini/export_phi-3-mini.py

@@ -4,6 +4,9 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
+
+import argparse
+
 import torch
 
 from executorch.backends.transforms.duplicate_dynamic_quant_chain import (
@@ -20,30 +23,43 @@
     XNNPACKQuantizer,
 )
 
-from transformers import Phi3ForCausalLM
+from transformers import AutoTokenizer, Phi3ForCausalLM
+
+from .phi_3_mini import Phi3Mini
 
 
-def main() -> None:
+def main(args) -> None:
     torch.manual_seed(0)
 
-    # pyre-ignore: Undefined attribute [16]: Module `transformers` has no attribute `Phi3ForCausalLM`
-    model = Phi3ForCausalLM.from_pretrained("microsoft/Phi-3-mini-4k-instruct")
+    model_name = "microsoft/Phi-3-mini-4k-instruct"
 
-    example_inputs = (torch.randint(0, 100, (1, 100), dtype=torch.long),)
-    dynamic_shape = {"input_ids": {1: torch.export.Dim("sequence_length", max=128)}}
+    with torch.no_grad():
+        model = Phi3Mini(
+            # pyre-ignore: Undefined attribute [16]: Module `transformers` has no attribute `Phi3ForCausalLM`
+            model=Phi3ForCausalLM.from_pretrained(model_name),
+            max_batch_size=1,
+            max_seq_len=args.seq_len,
+        )
+        tokenizer = AutoTokenizer.from_pretrained(model_name)
 
-    xnnpack_quant_config = get_symmetric_quantization_config(
-        is_per_channel=True, is_dynamic=True
-    )
-    xnnpack_quantizer = XNNPACKQuantizer()
-    xnnpack_quantizer.set_global(xnnpack_quant_config)
-
-    with torch.nn.attention.sdpa_kernel(
-        [torch.nn.attention.SDPBackend.MATH]
-    ), torch.no_grad():
-        model = capture_pre_autograd_graph(
-            model, example_inputs, dynamic_shapes=dynamic_shape
+        tokens = tokenizer.encode("Tell me a story", return_tensors="pt")
+        for input_pos in range(tokens.shape[-1]):
+            result = model.forward(
+                input_ids=tokens[:, input_pos : input_pos + 1],
+            )
+        current_token = torch.argmax(result, dim=-1).item()
+
+        example_inputs = (
+            torch.tensor([[current_token]], dtype=torch.long, requires_grad=False),
+        )
+
+        xnnpack_quant_config = get_symmetric_quantization_config(
+            is_per_channel=True, is_dynamic=True
         )
+        xnnpack_quantizer = XNNPACKQuantizer()
+        xnnpack_quantizer.set_global(xnnpack_quant_config)
+
+        model = capture_pre_autograd_graph(model, example_inputs)
         model = prepare_pt2e(model, xnnpack_quantizer)
         model(*example_inputs)
         model = convert_pt2e(model, fold_quantize=False)
@@ -53,19 +69,26 @@ def main() -> None:
         model = torch.export._trace._export(
             model,
             example_inputs,
-            dynamic_shapes=dynamic_shape,
             strict=False,
             pre_dispatch=False,
         )
 
     edge_config = get_xnnpack_edge_compile_config()
     edge_manager = to_edge(model, compile_config=edge_config)
-    edge_manager = edge_manager.to_backend(XnnpackPartitioner(has_dynamic_shapes=True))
+    edge_manager = edge_manager.to_backend(XnnpackPartitioner())
     et_program = edge_manager.to_executorch()
 
     with open("phi-3-mini.pte", "wb") as file:
         file.write(et_program.buffer)
 
 
 if __name__ == "__main__":
-    main()
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "-s",
+        "--seq_len",
+        type=int,
+        default=128,
+        help="Maximum number of tokens including prompt to generate",
+    )
+    main(parser.parse_args())