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37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
---
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title: Arm NN
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description: Instructions to execute ONNX Runtime with Arm NN on Armv8 cores
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parent: Execution Providers
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nav_order: 3
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redirect_from: /docs/reference/execution-providers/ArmNN-ExecutionProvider
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---
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# ArmNN Execution Provider
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{: .no_toc}
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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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Accelerate performance of ONNX model workloads across Armv8 cores with the ArmNN execution provider. [ArmNN](https://github.com/ARM-software/armnn) is an open source inference engine maintained by Arm and Linaro companies.
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## Build
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For build instructions, please see the [BUILD page](../build/eps.md#armnn).
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## Usage
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### C/C++
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To use ArmNN as execution provider for inferencing, please register it as below.
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```
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Ort::Env env = Ort::Env{ORT_LOGGING_LEVEL_ERROR, "Default"};
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Ort::SessionOptions so;
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bool enable_cpu_mem_arena = true;
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Ort::ThrowOnError(OrtSessionOptionsAppendExecutionProvider_ArmNN(so, enable_cpu_mem_arena));
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```
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The C API details are [here](../get-started/with-c.md).
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## Performance Tuning
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For performance tuning, please see guidance on this page: [ONNX Runtime Perf Tuning](../performance/tune-performance.md)
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When/if using [onnxruntime_perf_test](https://github.com/microsoft/onnxruntime/tree/master/onnxruntime/test/perftest), use the flag -e armnn
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