Design and implement symbolic shape inference capability for the ONNX IR that can propagate shapes through the graph while preserving symbolic dimension relationships (e.g., batch, seq_len, N+1).
SymbolicDim class (_core.py:1241): Immutable symbolic dimension with string or None valuesShape class (_core.py:1330): Supports mixed static/dynamic dimensions, freezing, denotations
| """ | |
| Perch v2 Bird Audio Classification Model - PyTorch Implementation | |
| This module provides a pure PyTorch implementation of the Perch v2 model, | |
| converted from the original ONNX model. The model processes 10-second audio | |
| clips at 16kHz (160,000 samples) and produces bird species embeddings and | |
| classification logits. | |
| Architecture: | |
| - Learned frontend with convolution-based STFT and mel filterbank |
| import onnx_ir as ir | |
| import onnx_ir.passes.common | |
| import onnxscript | |
| m = ir.load("perch_v2_opt3.onnx") | |
| for node in m.graph: | |
| if node.op_type == "MatMul": | |
| print(node) | |
| if node.inputs[0].producer().op_type == "Reshape": |
| Loading ONNX model from: perch_v2_opt2.onnx | |
| 2025-11-04 18:25:33.374 python[72171:12211235] 2025-11-04 18:25:33.374513 [W:onnxruntime:, graph.cc:4885 CleanUnusedInitializersAndNodeArgs] Removing initializer 'arith.constant470'. It is not used by any node and should be removed from the model. | |
| 2025-11-04 18:25:33.414 python[72171:12211235] 2025-11-04 18:25:33.414751 [E:onnxruntime:, inference_session.cc:2544 operator()] Exception during initialization: /Users/runner/work/1/s/onnxruntime/core/framework/execution_frame.h:112 const OrtValue &onnxruntime::IExecutionFrame::GetMLValue(int) const ort_value_index >= 0 && static_cast<size_t>(ort_value_index) < all_values_size_ was false. | |
| Traceback (most recent call last): | |
| File "/Users/justinc/Documents/GitHub/tensorflow-onnx/examples/compare_onnx_tflite.py", line 599, in <module> | |
| exit(main()) | |
| ^^^^^^ | |
| File "/Users/justinc/Documents/GitHub/tensorflow-onnx/examples/compare_onnx_tflite.py", line 541, in main | |
| onnx_session = load_onnx_model(args.onnx) | |
| #!/usr/bin/env python3 | |
| # SPDX-License-Identifier: Apache-2.0 | |
| """ | |
| Script to compare the results of an ONNX model with a TFLite model given the same input. | |
| Optionally also compare with Tract runtime for ONNX. | |
| Created by Copilot. | |
| Usage: | |
| python compare_onnx_tflite.py --onnx model.onnx --tflite model.tflite |
| # transformers==4.52.4 | |
| # pytorch nightly | |
| from __future__ import annotations | |
| import ast | |
| import logging | |
| import typing | |
| from pathlib import Path | |
| import onnx_ir as ir |
| {%- if tools %} | |
| {{- '<|im_start|>system\n' }} | |
| {%- if messages[0].role == 'system' %} | |
| {{- messages[0].content + '\n\n' }} | |
| {%- endif %} | |
| {{- "# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>" }} | |
| {%- for tool in tools %} | |
| {{- "\n" }} | |
| {{- tool | tojson }} | |
| {%- endfor %} |
| 2025-10-17 17:18:33.408 -07:00 [INF] Command:ModelInit Status:Success Direct:True Time:0ms | |
| 2025-10-17 17:18:33.861 -07:00 [INF] UserAgent:foundry-local-CLI/0.7.120+3b92ed4014 Command:ListDownloadedModels Status:Success Direct:True Time:5ms | |
| 2025-10-17 17:18:33.861 -07:00 [INF] Command:ModelDownload Status:Skipped Direct:False Time:1698ms | |
| 2025-10-17 17:18:33.861 -07:00 [INF] Command:ServiceStart Status:Skipped Direct:False Time:0ms | |
| 2025-10-17 17:18:34.234 -07:00 [INF] Command:ServiceList Status:Success Direct:False Time:372ms | |
| 2025-10-17 17:18:34.234 -07:00 [INF] Loading model: http://127.0.0.1:56051/openai/load/gemma-3-1b-it_ort?ttl=600 | |
| 2025-10-17 17:18:34.234 -07:00 [INF] UserAgent:foundry-local-CLI/0.7.120+3b92ed4014 Command:ListLoadedModels Status:Success Direct:True Time:0ms | |
| 2025-10-17 17:18:34.685 -07:00 [INF] Loading model:gemma-3-1b-it_ort | |
| 2025-10-17 17:18:40.704 -07:00 [INF] Finish loading model:gemma-3-1b-it_ort elapsed time:00:00:06.0190199 | |
| 2025-10-17 17:18:40.704 -07:00 [INF] UserAgent:foundry-lo |
| import torch | |
| import onnx_ir as ir | |
| class ControlFlowModel(torch.nn.Module): | |
| def forward(self, x): | |
| def times_2(x): | |
| return x * 2 | |
| def neg(x): | |
| return -x |
| """Export to ONNX. | |
| transformers_version == "4.52.0" | |
| """ | |
| import onnx_diagnostic.tasks.text_generation | |
| import torch | |
| from transformers import AutoConfig, AutoModel | |
| import onnxscript |