OpusMT-En-Zh: Optimized for Qualcomm Devices

OpusMT English to Chinese translation model is a state-of-the-art neural machine translation system designed for translating English text into Chinese. This model is based on the Marian transformer architecture and has been optimized for edge inference by splitting into encoder and decoder components with modified attention mechanisms. It exhibits robust performance for real-world translation tasks, making it highly reliable for practical applications. The model supports input sequences up to 256 tokens and can generate Chinese translations with high accuracy.

This is based on the implementation of OpusMT-En-Zh found here. This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the Qualcomm® AI Hub Models library to export with custom configurations. More details on model performance across various devices, can be found here.

Qualcomm AI Hub Models uses Qualcomm AI Hub Workbench to compile, profile, and evaluate this model. Sign up to run these models on a hosted Qualcomm® device.

Deploying OpusMT-En-Zh on-device

This model is compatible with the Qualcomm Voice AI SDK. Download the SDK from the Qualcomm Package Manager to deploy this model on-device.

Getting Started

There are two ways to deploy this model on your device:

Option 1: Download Pre-Exported Models

Below are pre-exported model assets ready for deployment.

Runtime	Precision	Chipset	SDK Versions	Download
VOICE_AI	float	Snapdragon® X2 Elite	QAIRT 2.45	Download
VOICE_AI	float	Snapdragon® X Elite	QAIRT 2.45	Download
VOICE_AI	float	Snapdragon® 8 Gen 3 Mobile	QAIRT 2.45	Download
VOICE_AI	float	Snapdragon® 8 Gen 1 Mobile	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® Dragonwing™ IQ-8275	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® SA8775P	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® Dragonwing™ IQ-9075	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® SA7255P	QAIRT 2.45	Download
VOICE_AI	float	Qualcomm® SA8295P	QAIRT 2.45	Download
VOICE_AI	float	Snapdragon® 8 Elite Mobile	QAIRT 2.45	Download
VOICE_AI	float	Snapdragon® 8 Elite Gen 5 Mobile	QAIRT 2.45	Download

For more device-specific assets and performance metrics, visit OpusMT-En-Zh on Qualcomm® AI Hub.

Option 2: Export with Custom Configurations

Use the Qualcomm® AI Hub Models Python library to compile and export the model with your own:

Custom weights (e.g., fine-tuned checkpoints)
Custom input shapes
Target device and runtime configurations

This option is ideal if you need to customize the model beyond the default configuration provided here.

See our repository for OpusMT-En-Zh on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.text_generation

Model Stats:

Attention heads: 8
Hidden dimension: 512
Input resolution: 256 tokens (English text)
Max input sequence length: 256 tokens
Max output sequence length: 256 tokens
Model checkpoint: Helsinki-NLP/opus-mt-en-zh
Model size (decoder) (float): ~280 MB
Model size (encoder) (float): ~280 MB
Number of decoder layers: 6
Number of encoder layers: 6
Number of parameters (decoder): ~74M
Number of parameters (encoder): ~74M

Performance Summary

Model	Runtime	Precision	Chipset	Inference Time (ms)	Peak Memory Range (MB)	Primary Compute Unit
decoder	VOICE_AI	float	Snapdragon® X2 Elite	2.286 ms	12 - 12 MB	NPU
decoder	VOICE_AI	float	Snapdragon® X Elite	3.06 ms	12 - 12 MB	NPU
decoder	VOICE_AI	float	Snapdragon® 8 Gen 3 Mobile	2.952 ms	12 - 20 MB	NPU
decoder	VOICE_AI	float	Snapdragon® 8 Gen 1 Mobile	4.511 ms	11 - 20 MB	NPU
decoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-8275	6.578 ms	12 - 20 MB	NPU
decoder	VOICE_AI	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.384 ms	3 - 5 MB	NPU
decoder	VOICE_AI	float	Qualcomm® SA8775P	4.244 ms	12 - 22 MB	NPU
decoder	VOICE_AI	float	Qualcomm® SA8650P	4.244 ms	12 - 22 MB	NPU
decoder	VOICE_AI	float	Qualcomm® SA8255P	4.244 ms	12 - 22 MB	NPU
decoder	VOICE_AI	float	Qualcomm® QCS8450	4.511 ms	11 - 20 MB	NPU
decoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-9075	3.976 ms	14 - 28 MB	NPU
decoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-X7181	3.06 ms	12 - 12 MB	NPU
decoder	VOICE_AI	float	Qualcomm® Dragonwing™ Q-8750	2.546 ms	0 - 13 MB	NPU
decoder	VOICE_AI	float	Qualcomm® SA7255P	6.578 ms	12 - 20 MB	NPU
decoder	VOICE_AI	float	Qualcomm® SA8295P	4.428 ms	10 - 16 MB	NPU
decoder	VOICE_AI	float	Snapdragon® 8 Elite Mobile	2.546 ms	0 - 13 MB	NPU
decoder	VOICE_AI	float	Snapdragon® 8 Elite Gen 5 Mobile	2.168 ms	1 - 9 MB	NPU
encoder	VOICE_AI	float	Snapdragon® X2 Elite	2.125 ms	0 - 0 MB	NPU
encoder	VOICE_AI	float	Snapdragon® X Elite	3.928 ms	0 - 0 MB	NPU
encoder	VOICE_AI	float	Snapdragon® 8 Gen 3 Mobile	2.646 ms	0 - 7 MB	NPU
encoder	VOICE_AI	float	Snapdragon® 8 Gen 1 Mobile	4.976 ms	0 - 14 MB	NPU
encoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-8275	12.641 ms	0 - 9 MB	NPU
encoder	VOICE_AI	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.627 ms	1 - 2 MB	NPU
encoder	VOICE_AI	float	Qualcomm® SA8775P	4.734 ms	0 - 10 MB	NPU
encoder	VOICE_AI	float	Qualcomm® SA8650P	4.734 ms	0 - 10 MB	NPU
encoder	VOICE_AI	float	Qualcomm® SA8255P	4.734 ms	0 - 10 MB	NPU
encoder	VOICE_AI	float	Qualcomm® QCS8450	4.976 ms	0 - 14 MB	NPU
encoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-9075	4.59 ms	0 - 8 MB	NPU
encoder	VOICE_AI	float	Qualcomm® Dragonwing™ IQ-X7181	3.928 ms	0 - 0 MB	NPU
encoder	VOICE_AI	float	Qualcomm® Dragonwing™ Q-8750	2.227 ms	0 - 10 MB	NPU
encoder	VOICE_AI	float	Qualcomm® SA7255P	12.641 ms	0 - 9 MB	NPU
encoder	VOICE_AI	float	Qualcomm® SA8295P	5.353 ms	0 - 6 MB	NPU
encoder	VOICE_AI	float	Snapdragon® 8 Elite Mobile	2.227 ms	0 - 10 MB	NPU
encoder	VOICE_AI	float	Snapdragon® 8 Elite Gen 5 Mobile	1.762 ms	0 - 9 MB	NPU

License

The license for the original implementation of OpusMT-En-Zh can be found here.

References

Community

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