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57 lines
2.3 KiB
Markdown
57 lines
2.3 KiB
Markdown
---
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title: AMD MI GraphX
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parent: Execution Providers
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grand_parent: Reference
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nav_order: 5
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---
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# MIGraphX Execution Provider
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{: .no_toc }
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ONNX Runtime's [MIGraphX](https://github.com/ROCmSoftwarePlatform/AMDMIGraphX/) execution provider uses AMD's Deep Learning graph optimization engine to accelerate ONNX model on AMD GPUs.
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## Contents
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{: .no_toc }
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* TOC placeholder
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{:toc}
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## Build
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For build instructions, please see the [BUILD page](../../how-to/build.md#AMD-MIGraphX).
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## Using the MIGraphX execution provider
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### C/C++
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The MIGraphX execution provider needs to be registered with ONNX Runtime to enable in the inference session.
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```
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string log_id = "Foo";
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auto logging_manager = std::make_unique<LoggingManager>
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(std::unique_ptr<ISink>{new CLogSink{}},
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static_cast<Severity>(lm_info.default_warning_level),
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false,
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LoggingManager::InstanceType::Default,
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&log_id)
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Environment::Create(std::move(logging_manager), env)
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InferenceSession session_object{so,env};
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session_object.RegisterExecutionProvider(std::make_unique<::onnxruntime::MIGraphXExecutionProvider>());
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status = session_object.Load(model_file_name);
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```
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You can check [here](https://github.com/scxiao/ort_test/tree/master/char_rnn) for a specific c/c++ program.
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The C API details are [here](../api/c-api.md).
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### Python
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When using the Python wheel from the ONNX Runtime build with MIGraphX execution provider, it will be automatically
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prioritized over the default GPU or CPU execution providers. There is no need to separately register the execution
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provider. Python APIs details are [here](/python/api_summary).
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You can check [here](https://github.com/scxiao/ort_test/tree/master/python/run_onnx) for a python script to run an
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model on either the CPU or MIGraphX Execution Provider.
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## Performance Tuning
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For performance tuning, please see guidance on this page: [ONNX Runtime Perf Tuning](../../how-to/tune-performance.md)
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When/if using [onnxruntime_perf_test](https://github.com/microsoft/onnxruntime/tree/master/onnxruntime/test/perftest#onnxruntime-performance-test), use the flag `-e migraphx`
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## Configuring environment variables
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MIGraphX providers an environment variable ORT_MIGRAPHX_FP16_ENABLE to enable the FP16 mode.
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