OpusMT-En-It: Optimized for Qualcomm Devices
OpusMT English to Italian translation model is a state-of-the-art neural machine translation system designed for translating English text into Italian. 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 Italian translations with high accuracy.
This is based on the implementation of OpusMT-En-It 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-It 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-It 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-It 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-it
- 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 | 1.476 ms | 0 - 8 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® 8 Elite For Galaxy Mobile | 1.59 ms | 0 - 8 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® X2 Elite | 1.501 ms | 12 - 12 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® X Elite | 2.285 ms | 12 - 12 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 3.125 ms | 2 - 11 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 3.232 ms | 12 - 27 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 2.547 ms | 4 - 6 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® SA8775P | 3.149 ms | 12 - 21 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® SA8650P | 3.149 ms | 12 - 21 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® SA8255P | 3.149 ms | 12 - 21 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® QCS8450 | 3.125 ms | 2 - 11 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 2.981 ms | 12 - 27 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 2.285 ms | 12 - 12 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 1.59 ms | 0 - 8 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® SA7255P | 4.204 ms | 12 - 19 MB | NPU |
| decoder | VOICE_AI | float | Qualcomm® SA8295P | 3.306 ms | 12 - 17 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® 8 Elite Extreme Gen 6 Mobile | 1.426 ms | 1 - 11 MB | NPU |
| decoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 6 Mobile | 1.433 ms | 1 - 11 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 1.07 ms | 0 - 8 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite For Galaxy Mobile | 1.143 ms | 0 - 13 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® X2 Elite | 0.971 ms | 3 - 3 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® X Elite | 1.64 ms | 3 - 3 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® 8 Gen 1 Mobile | 1.91 ms | 1 - 10 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-8275 | 2.096 ms | 2 - 6 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 1.693 ms | 0 - 2 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® SA8775P | 2.149 ms | 0 - 5 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® SA8650P | 2.149 ms | 0 - 5 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® SA8255P | 2.149 ms | 0 - 5 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® QCS8450 | 1.91 ms | 1 - 10 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-9075 | 1.995 ms | 4 - 7 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-X7181 | 1.64 ms | 3 - 3 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ Q-8750 | 1.143 ms | 0 - 13 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® SA7255P | 3.059 ms | 3 - 11 MB | NPU |
| decoder | VOICE_AI | w8a16 | Qualcomm® SA8295P | 2.366 ms | 1 - 6 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Extreme Gen 6 Mobile | 1.033 ms | 0 - 10 MB | NPU |
| decoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Gen 6 Mobile | 1.025 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 2.603 ms | 0 - 8 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® 8 Elite For Galaxy Mobile | 2.964 ms | 0 - 13 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® X2 Elite | 2.49 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® X Elite | 4.996 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® 8 Gen 1 Mobile | 6.093 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-8275 | 5.084 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 4.95 ms | 0 - 2 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® SA8775P | 5.3 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® SA8650P | 5.3 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® SA8255P | 5.3 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® QCS8450 | 6.093 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-9075 | 5.065 ms | 0 - 8 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ IQ-X7181 | 4.996 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® Dragonwing™ Q-8750 | 2.964 ms | 0 - 13 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® SA7255P | 8.337 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | float | Qualcomm® SA8295P | 6.422 ms | 0 - 5 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® 8 Elite Extreme Gen 6 Mobile | 1.144 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | float | Snapdragon® 8 Elite Gen 6 Mobile | 2.497 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Gen 5 For Galaxy Mobile | 2.382 ms | 0 - 7 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite For Galaxy Mobile | 2.793 ms | 0 - 8 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® X2 Elite | 2.315 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® X Elite | 4.657 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® 8 Gen 1 Mobile | 5.495 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-8275 | 4.635 ms | 0 - 4 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ QCS8550 (Proxy) | 4.641 ms | 0 - 4 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® SA8775P | 4.75 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® SA8650P | 4.75 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® SA8255P | 4.75 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® QCS8450 | 5.495 ms | 0 - 10 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-9075 | 4.553 ms | 0 - 4 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ IQ-X7181 | 4.657 ms | 0 - 0 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® Dragonwing™ Q-8750 | 2.793 ms | 0 - 8 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® SA7255P | 7.925 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | w8a16 | Qualcomm® SA8295P | 6.015 ms | 0 - 5 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Extreme Gen 6 Mobile | 0.929 ms | 0 - 9 MB | NPU |
| encoder | VOICE_AI | w8a16 | Snapdragon® 8 Elite Gen 6 Mobile | 2.192 ms | 0 - 9 MB | NPU |
License
- The license for the original implementation of OpusMT-En-It can be found here.
References
Community
- Join our AI Hub Slack community to collaborate, post questions and learn more about on-device AI.
- For questions or feedback please reach out to us.
