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OpusMT-En-Ja

Text Generation
PyTorch
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android
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OpusMT-En-Ja: Optimized for Qualcomm Devices

OpusMT English to Japanese translation model is a state-of-the-art neural machine translation system designed for translating English text into Japanese. 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 English translations with high accuracy.

This is based on the implementation of OpusMT-En-Ja 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-Ja 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® 8 Elite Gen 5 For Galaxy Mobile QAIRT 2.50 Download
VOICE_AI float Snapdragon® 8 Elite For Galaxy Mobile QAIRT 2.50 Download
VOICE_AI float Snapdragon® X2 Elite QAIRT 2.50 Download
VOICE_AI float Snapdragon® X Elite QAIRT 2.50 Download
VOICE_AI float Snapdragon® 8 Gen 1 Mobile QAIRT 2.50 Download
VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 QAIRT 2.50 Download
VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) QAIRT 2.50 Download
VOICE_AI float Qualcomm® SA8775P QAIRT 2.50 Download
VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 QAIRT 2.50 Download
VOICE_AI float Qualcomm® SA7255P QAIRT 2.50 Download
VOICE_AI float Qualcomm® SA8295P QAIRT 2.50 Download
VOICE_AI float Snapdragon® 8 Elite Extreme Gen 6 Mobile QAIRT 2.50 Download
VOICE_AI float Snapdragon® 8 Elite Gen 6 Mobile QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® 8 Elite For Galaxy Mobile QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® X2 Elite QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® X Elite QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® 8 Gen 1 Mobile QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-8275 QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® Dragonwing™ QCS8550 (Proxy) QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® SA8775P QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-9075 QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® SA7255P QAIRT 2.50 Download
VOICE_AI w8a16 Qualcomm® SA8295P QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® 8 Elite Extreme Gen 6 Mobile QAIRT 2.50 Download
VOICE_AI w8a16 Snapdragon® 8 Elite Gen 6 Mobile QAIRT 2.50 Download

For more device-specific assets and performance metrics, visit OpusMT-En-Ja 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-Ja 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-ja
  • Model size (decoder) (float): 340 MB
  • Model size (decoder) (w8a16): 90.8 MB
  • Model size (encoder) (float): 212 MB
  • Model size (encoder) (w8a16): 55.2 MB
  • Number of decoder layers: 6
  • Number of encoder layers: 6
  • Number of parameters (decoder): 55.7M
  • Number of parameters (encoder): 55.5M

Performance Summary

Model Runtime Precision Chipset Inference Time (ms) Peak Memory Range (MB) Primary Compute Unit
decoder VOICE_AI float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 1.215 ms 1 - 8 MB NPU
decoder VOICE_AI float Snapdragon® 8 Elite For Galaxy Mobile 1.299 ms 0 - 8 MB NPU
decoder VOICE_AI float Snapdragon® X2 Elite 1.306 ms 12 - 12 MB NPU
decoder VOICE_AI float Snapdragon® X Elite 2.073 ms 12 - 12 MB NPU
decoder VOICE_AI float Snapdragon® 8 Gen 1 Mobile 2.639 ms 1 - 10 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 2.819 ms 12 - 27 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) 2.172 ms 4 - 6 MB NPU
decoder VOICE_AI float Qualcomm® SA8775P 2.783 ms 12 - 21 MB NPU
decoder VOICE_AI float Qualcomm® SA8650P 2.783 ms 12 - 21 MB NPU
decoder VOICE_AI float Qualcomm® SA8255P 2.783 ms 12 - 21 MB NPU
decoder VOICE_AI float Qualcomm® QCS8450 2.639 ms 1 - 10 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 2.666 ms 12 - 26 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ IQ-X7181 2.073 ms 12 - 12 MB NPU
decoder VOICE_AI float Qualcomm® Dragonwing™ Q-8750 1.299 ms 0 - 8 MB NPU
decoder VOICE_AI float Qualcomm® SA7255P 3.759 ms 12 - 21 MB NPU
decoder VOICE_AI float Qualcomm® SA8295P 2.915 ms 10 - 15 MB NPU
decoder VOICE_AI float Snapdragon® 8 Elite Extreme Gen 6 Mobile 1.196 ms 1 - 11 MB NPU
decoder VOICE_AI float Snapdragon® 8 Elite Gen 6 Mobile 1.216 ms 1 - 10 MB NPU
decoder VOICE_AI w8a16 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 0.824 ms 1 - 8 MB NPU
decoder VOICE_AI w8a16 Snapdragon® 8 Elite For Galaxy Mobile 0.878 ms 0 - 8 MB NPU
decoder VOICE_AI w8a16 Snapdragon® X2 Elite 0.843 ms 3 - 3 MB NPU
decoder VOICE_AI w8a16 Snapdragon® X Elite 1.283 ms 3 - 3 MB NPU
decoder VOICE_AI w8a16 Snapdragon® 8 Gen 1 Mobile 1.487 ms 1 - 10 MB NPU
decoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-8275 1.721 ms 0 - 5 MB NPU
decoder VOICE_AI w8a16 Qualcomm® Dragonwing™ QCS8550 (Proxy) 1.316 ms 0 - 2 MB NPU
decoder VOICE_AI w8a16 Qualcomm® SA8775P 1.763 ms 2 - 12 MB NPU
decoder VOICE_AI w8a16 Qualcomm® SA8650P 1.763 ms 2 - 12 MB NPU
decoder VOICE_AI w8a16 Qualcomm® SA8255P 1.763 ms 2 - 12 MB NPU
decoder VOICE_AI w8a16 Qualcomm® QCS8450 1.487 ms 1 - 10 MB NPU
decoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-9075 1.617 ms 4 - 7 MB NPU
decoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-X7181 1.283 ms 3 - 3 MB NPU
decoder VOICE_AI w8a16 Qualcomm® Dragonwing™ Q-8750 0.878 ms 0 - 8 MB NPU
decoder VOICE_AI w8a16 Qualcomm® SA7255P 2.588 ms 0 - 8 MB NPU
decoder VOICE_AI w8a16 Qualcomm® SA8295P 1.896 ms 1 - 6 MB NPU
decoder VOICE_AI w8a16 Snapdragon® 8 Elite Extreme Gen 6 Mobile 0.816 ms 0 - 10 MB NPU
decoder VOICE_AI w8a16 Snapdragon® 8 Elite Gen 6 Mobile 0.801 ms 0 - 10 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 2.608 ms 0 - 8 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite For Galaxy Mobile 2.951 ms 0 - 8 MB NPU
encoder VOICE_AI float Snapdragon® X2 Elite 2.607 ms 0 - 0 MB NPU
encoder VOICE_AI float Snapdragon® X Elite 4.942 ms 0 - 0 MB NPU
encoder VOICE_AI float Snapdragon® 8 Gen 1 Mobile 6.217 ms 0 - 14 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-8275 5.118 ms 0 - 9 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ QCS8550 (Proxy) 4.955 ms 0 - 8 MB NPU
encoder VOICE_AI float Qualcomm® SA8775P 5.241 ms 0 - 10 MB NPU
encoder VOICE_AI float Qualcomm® SA8650P 5.241 ms 0 - 10 MB NPU
encoder VOICE_AI float Qualcomm® SA8255P 5.241 ms 0 - 10 MB NPU
encoder VOICE_AI float Qualcomm® QCS8450 6.217 ms 0 - 14 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-9075 5.063 ms 2 - 10 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ IQ-X7181 4.942 ms 0 - 0 MB NPU
encoder VOICE_AI float Qualcomm® Dragonwing™ Q-8750 2.951 ms 0 - 8 MB NPU
encoder VOICE_AI float Qualcomm® SA7255P 8.363 ms 0 - 8 MB NPU
encoder VOICE_AI float Qualcomm® SA8295P 6.376 ms 0 - 5 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite Extreme Gen 6 Mobile 1.141 ms 0 - 10 MB NPU
encoder VOICE_AI float Snapdragon® 8 Elite Gen 6 Mobile 2.449 ms 0 - 10 MB NPU
encoder VOICE_AI w8a16 Snapdragon® 8 Elite Gen 5 For Galaxy Mobile 2.391 ms 0 - 7 MB NPU
encoder VOICE_AI w8a16 Snapdragon® 8 Elite For Galaxy Mobile 2.816 ms 0 - 12 MB NPU
encoder VOICE_AI w8a16 Snapdragon® X2 Elite 2.299 ms 0 - 0 MB NPU
encoder VOICE_AI w8a16 Snapdragon® X Elite 4.598 ms 0 - 0 MB NPU
encoder VOICE_AI w8a16 Snapdragon® 8 Gen 1 Mobile 5.51 ms 0 - 11 MB NPU
encoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-8275 4.623 ms 0 - 4 MB NPU
encoder VOICE_AI w8a16 Qualcomm® Dragonwing™ QCS8550 (Proxy) 4.647 ms 0 - 1 MB NPU
encoder VOICE_AI w8a16 Qualcomm® SA8775P 4.741 ms 0 - 9 MB NPU
encoder VOICE_AI w8a16 Qualcomm® SA8650P 4.741 ms 0 - 9 MB NPU
encoder VOICE_AI w8a16 Qualcomm® SA8255P 4.741 ms 0 - 9 MB NPU
encoder VOICE_AI w8a16 Qualcomm® QCS8450 5.51 ms 0 - 11 MB NPU
encoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-9075 4.559 ms 2 - 6 MB NPU
encoder VOICE_AI w8a16 Qualcomm® Dragonwing™ IQ-X7181 4.598 ms 0 - 0 MB NPU
encoder VOICE_AI w8a16 Qualcomm® Dragonwing™ Q-8750 2.816 ms 0 - 12 MB NPU
encoder VOICE_AI w8a16 Qualcomm® SA7255P 7.808 ms 0 - 8 MB NPU
encoder VOICE_AI w8a16 Qualcomm® SA8295P 6.003 ms 0 - 5 MB NPU
encoder VOICE_AI w8a16 Snapdragon® 8 Elite Extreme Gen 6 Mobile 0.929 ms 0 - 10 MB NPU
encoder VOICE_AI w8a16 Snapdragon® 8 Elite Gen 6 Mobile 2.201 ms 0 - 9 MB NPU

License

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

References

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