Merging onnx models (#518)

* add export function of onnx-all-in-one to export.py

* add onnx_check script for all-in-one onnx model

* minor fix

* remove unused arguments

* add onnx-all-in-one test

* fix style

* fix style

* fix requirements

* fix input/output names

* fix installing onnx_graphsurgeon

* fix instaliing onnx_graphsurgeon

* revert to previous requirements.txt

* fix minor

.github/scripts/run-librispeech-pruned-transducer-stateless3-2022-05-13.sh

@@ -60,6 +60,10 @@ log "Decode with ONNX models"
   --onnx-decoder-filename $repo/exp/decoder.onnx \
   --onnx-joiner-filename $repo/exp/joiner.onnx
 
+./pruned_transducer_stateless3/onnx_check_all_in_one.py \
+  --jit-filename $repo/exp/cpu_jit.pt \
+  --onnx-all-in-one-filename $repo/exp/all_in_one.onnx
+
 ./pruned_transducer_stateless3/onnx_pretrained.py \
   --bpe-model $repo/data/lang_bpe_500/bpe.model \
   --encoder-model-filename $repo/exp/encoder.onnx \

egs/librispeech/ASR/pruned_transducer_stateless3/export.py

@@ -115,6 +115,7 @@
 import logging
 from pathlib import Path
 
+import onnx
 import sentencepiece as spm
 import torch
 import torch.nn as nn
@@ -512,6 +513,30 @@ def export_joiner_model_onnx(
     logging.info(f"Saved to {joiner_filename}")
 
 
+def export_all_in_one_onnx(
+    encoder_filename: str,
+    decoder_filename: str,
+    joiner_filename: str,
+    all_in_one_filename: str,
+):
+    encoder_onnx = onnx.load(encoder_filename)
+    decoder_onnx = onnx.load(decoder_filename)
+    joiner_onnx = onnx.load(joiner_filename)
+
+    encoder_onnx = onnx.compose.add_prefix(encoder_onnx, prefix="encoder/")
+    decoder_onnx = onnx.compose.add_prefix(decoder_onnx, prefix="decoder/")
+    joiner_onnx = onnx.compose.add_prefix(joiner_onnx, prefix="joiner/")
+
+    combined_model = onnx.compose.merge_models(
+        encoder_onnx, decoder_onnx, io_map={}
+    )
+    combined_model = onnx.compose.merge_models(
+        combined_model, joiner_onnx, io_map={}
+    )
+    onnx.save(combined_model, all_in_one_filename)
+    logging.info(f"Saved to {all_in_one_filename}")
+
+
 @torch.no_grad()
 def main():
     args = get_parser().parse_args()
@@ -603,6 +628,14 @@ def main():
             joiner_filename,
             opset_version=opset_version,
         )
+
+        all_in_one_filename = params.exp_dir / "all_in_one.onnx"
+        export_all_in_one_onnx(
+            encoder_filename,
+            decoder_filename,
+            joiner_filename,
+            all_in_one_filename,
+        )
     elif params.jit is True:
         logging.info("Using torch.jit.script()")
         # We won't use the forward() method of the model in C++, so just ignore

egs/librispeech/ASR/pruned_transducer_stateless3/onnx_check_all_in_one.py

@@ -0,0 +1,284 @@
+#!/usr/bin/env python3
+#
+# Copyright 2022 Xiaomi Corporation (Author: Yunus Emre Ozkose)
+#
+# See ../../../../LICENSE for clarification regarding multiple authors
+#
+# 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
+#
+#     http://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.
+
+"""
+This script checks that exported onnx models produce the same output
+with the given torchscript model for the same input.
+"""
+
+import argparse
+import logging
+import os
+
+import onnx
+import onnx_graphsurgeon as gs
+import onnxruntime
+import onnxruntime as ort
+import torch
+
+ort.set_default_logger_severity(3)
+
+
+def get_parser():
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter
+    )
+
+    parser.add_argument(
+        "--jit-filename",
+        required=True,
+        type=str,
+        help="Path to the torchscript model",
+    )
+
+    parser.add_argument(
+        "--onnx-all-in-one-filename",
+        required=True,
+        type=str,
+        help="Path to the onnx all in one model",
+    )
+
+    return parser
+
+
+def test_encoder(
+    model: torch.jit.ScriptModule,
+    encoder_session: ort.InferenceSession,
+):
+    encoder_inputs = encoder_session.get_inputs()
+    assert encoder_inputs[0].shape == ["N", "T", 80]
+    assert encoder_inputs[1].shape == ["N"]
+    encoder_input_names = [i.name for i in encoder_inputs]
+    encoder_output_names = [i.name for i in encoder_session.get_outputs()]
+
+    for N in [1, 5]:
+        for T in [12, 25]:
+            print("N, T", N, T)
+            x = torch.rand(N, T, 80, dtype=torch.float32)
+            x_lens = torch.randint(low=10, high=T + 1, size=(N,))
+            x_lens[0] = T
+
+            encoder_inputs = {
+                encoder_input_names[0]: x.numpy(),
+                encoder_input_names[1]: x_lens.numpy(),
+            }
+            encoder_out, encoder_out_lens = encoder_session.run(
+                [encoder_output_names[1], encoder_output_names[0]],
+                encoder_inputs,
+            )
+
+            torch_encoder_out, torch_encoder_out_lens = model.encoder(x, x_lens)
+
+            encoder_out = torch.from_numpy(encoder_out)
+            assert torch.allclose(encoder_out, torch_encoder_out, atol=1e-05), (
+                (encoder_out - torch_encoder_out).abs().max()
+            )
+
+
+def test_decoder(
+    model: torch.jit.ScriptModule,
+    decoder_session: ort.InferenceSession,
+):
+    decoder_inputs = decoder_session.get_inputs()
+    assert decoder_inputs[0].shape == ["N", 2]
+    decoder_input_names = [i.name for i in decoder_inputs]
+    decoder_output_names = [i.name for i in decoder_session.get_outputs()]
+
+    for N in [1, 5, 10]:
+        y = torch.randint(low=1, high=500, size=(10, 2))
+
+        decoder_inputs = {decoder_input_names[0]: y.numpy()}
+        decoder_out = decoder_session.run(
+            [decoder_output_names[0]],
+            decoder_inputs,
+        )[0]
+        decoder_out = torch.from_numpy(decoder_out)
+
+        torch_decoder_out = model.decoder(y, need_pad=False)
+        assert torch.allclose(decoder_out, torch_decoder_out, atol=1e-5), (
+            (decoder_out - torch_decoder_out).abs().max()
+        )
+
+
+def test_joiner(
+    model: torch.jit.ScriptModule,
+    joiner_session: ort.InferenceSession,
+):
+    joiner_inputs = joiner_session.get_inputs()
+    assert joiner_inputs[0].shape == ["N", 512]
+    assert joiner_inputs[1].shape == ["N", 512]
+    joiner_input_names = [i.name for i in joiner_inputs]
+    joiner_output_names = [i.name for i in joiner_session.get_outputs()]
+
+    for N in [1, 5, 10]:
+        encoder_out = torch.rand(N, 512)
+        decoder_out = torch.rand(N, 512)
+
+        joiner_inputs = {
+            joiner_input_names[0]: encoder_out.numpy(),
+            joiner_input_names[1]: decoder_out.numpy(),
+        }
+        joiner_out = joiner_session.run(
+            [joiner_output_names[0]], joiner_inputs
+        )[0]
+        joiner_out = torch.from_numpy(joiner_out)
+
+        torch_joiner_out = model.joiner(
+            encoder_out,
+            decoder_out,
+            project_input=True,
+        )
+        assert torch.allclose(joiner_out, torch_joiner_out, atol=1e-5), (
+            (joiner_out - torch_joiner_out).abs().max()
+        )
+
+
+def extract_sub_model(
+    onnx_graph: onnx.ModelProto,
+    input_op_names: list,
+    output_op_names: list,
+    non_verbose=False,
+):
+    onnx_graph = onnx.shape_inference.infer_shapes(onnx_graph)
+    graph = gs.import_onnx(onnx_graph)
+    graph.cleanup().toposort()
+
+    # Extraction of input OP and output OP
+    graph_node_inputs = [
+        graph_nodes
+        for graph_nodes in graph.nodes
+        for graph_nodes_input in graph_nodes.inputs
+        if graph_nodes_input.name in input_op_names
+    ]
+    graph_node_outputs = [
+        graph_nodes
+        for graph_nodes in graph.nodes
+        for graph_nodes_output in graph_nodes.outputs
+        if graph_nodes_output.name in output_op_names
+    ]
+
+    # Init graph INPUT/OUTPUT
+    graph.inputs.clear()
+    graph.outputs.clear()
+
+    # Update graph INPUT/OUTPUT
+    graph.inputs = [
+        graph_node_input
+        for graph_node in graph_node_inputs
+        for graph_node_input in graph_node.inputs
+        if graph_node_input.shape
+    ]
+    graph.outputs = [
+        graph_node_output
+        for graph_node in graph_node_outputs
+        for graph_node_output in graph_node.outputs
+    ]
+
+    # Cleanup
+    graph.cleanup().toposort()
+
+    # Shape Estimation
+    extracted_graph = None
+    try:
+        extracted_graph = onnx.shape_inference.infer_shapes(
+            gs.export_onnx(graph)
+        )
+    except Exception:
+        extracted_graph = gs.export_onnx(graph)
+        if not non_verbose:
+            print(
+                "WARNING: "
+                + "The input shape of the next OP does not match the output shape. "
+                + "Be sure to open the .onnx file to verify the certainty of the geometry."
+            )
+    return extracted_graph
+
+
+def extract_encoder(onnx_model: onnx.ModelProto):
+    encoder_ = extract_sub_model(
+        onnx_model,
+        ["encoder/x", "encoder/x_lens"],
+        ["encoder/encoder_out", "encoder/encoder_out_lens"],
+        False,
+    )
+    onnx.save(encoder_, "tmp_encoder.onnx")
+    onnx.checker.check_model(encoder_)
+    sess = onnxruntime.InferenceSession("tmp_encoder.onnx")
+    os.remove("tmp_encoder.onnx")
+    return sess
+
+
+def extract_decoder(onnx_model: onnx.ModelProto):
+    decoder_ = extract_sub_model(
+        onnx_model, ["decoder/y"], ["decoder/decoder_out"], False
+    )
+    onnx.save(decoder_, "tmp_decoder.onnx")
+    onnx.checker.check_model(decoder_)
+    sess = onnxruntime.InferenceSession("tmp_decoder.onnx")
+    os.remove("tmp_decoder.onnx")
+    return sess
+
+
+def extract_joiner(onnx_model: onnx.ModelProto):
+    joiner_ = extract_sub_model(
+        onnx_model,
+        ["joiner/encoder_out", "joiner/decoder_out"],
+        ["joiner/logit"],
+        False,
+    )
+    onnx.save(joiner_, "tmp_joiner.onnx")
+    onnx.checker.check_model(joiner_)
+    sess = onnxruntime.InferenceSession("tmp_joiner.onnx")
+    os.remove("tmp_joiner.onnx")
+    return sess
+
+
+@torch.no_grad()
+def main():
+    args = get_parser().parse_args()
+    logging.info(vars(args))
+
+    model = torch.jit.load(args.jit_filename)
+    onnx_model = onnx.load(args.onnx_all_in_one_filename)
+
+    options = ort.SessionOptions()
+    options.inter_op_num_threads = 1
+    options.intra_op_num_threads = 1
+
+    logging.info("Test encoder")
+    encoder_session = extract_encoder(onnx_model)
+    test_encoder(model, encoder_session)
+
+    logging.info("Test decoder")
+    decoder_session = extract_decoder(onnx_model)
+    test_decoder(model, decoder_session)
+
+    logging.info("Test joiner")
+    joiner_session = extract_joiner(onnx_model)
+    test_joiner(model, joiner_session)
+    logging.info("Finished checking ONNX models")
+
+
+if __name__ == "__main__":
+    torch.manual_seed(20220727)
+    formatter = (
+        "%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s"
+    )
+
+    logging.basicConfig(format=formatter, level=logging.INFO)
+    main()

requirements-ci.txt

@@ -23,3 +23,4 @@ multi_quantization
 
 onnx
 onnxruntime
+onnx_graphsurgeon -i https://pypi.ngc.nvidia.com

requirements.txt

@@ -6,3 +6,5 @@ typeguard
 multi_quantization
 onnx
 onnxruntime
+--extra-index-url https://pypi.ngc.nvidia.com
+onnx_graphsurgeon