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Update llama2 readme file #3338

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Apr 25, 2024
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Update llama2 readme file #3338

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17 changes: 8 additions & 9 deletions examples/models/llama2/README.md
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Expand Up @@ -30,21 +30,20 @@ We evaluated WikiText perplexity using [LM Eval](https://github.com/EleutherAI/l

Note that groupsize less than 128 was not enabled, since such model were still too large. This is because our current efforts have focused on enabling FP32 and support for FP16 is under way. What this implies for model size is that 1) embedding table is in FP32 and 2) quantized weights scales are FP32.

## Enablement

We have verified running Llama 2 7B [mobile applications](#step-6-build-mobile-apps) efficiently on select devices including the iPhone 15 Pro, iPhone 15 Pro Max, Samsung Galaxy S22 and S24, and One Plus 12.

## Performance

Performance was measured on Samsung Galaxy S22, S24, One Plus 12 and iPhone 15 max Pro. Measurement performance is in terms of tokens/second.
Performance was measured on the Samsung Galaxy S22, S24, and One Plus 12 devices. The performance measurement is expressed in terms of tokens per second using an [adb binary-based approach](#step-5-run-benchmark-on).

|Device | Groupwise 4-bit (128) | Groupwise 4-bit (256)
|--------| ---------------------- | ---------------
|Galaxy S22* | 8.15 tokens/second | 8.3 tokens/second |
|Galaxy S24* | 10.66 tokens/second | 11.26 tokens/second |
|One plus 12* | 11.55 tokens/second | 11.6 tokens/second |
|Galaxy S22** | 5.5 tokens/second | 5.9 tokens/second |
|iPhone 15 pro** | ~6 tokens/second | ~6 tokens/second |

*: Measured via adb binary based [workflow](#step-5-run-benchmark-on)
|Galaxy S22 | 8.15 tokens/second | 8.3 tokens/second |
|Galaxy S24 | 10.66 tokens/second | 11.26 tokens/second |
|One plus 12 | 11.55 tokens/second | 11.6 tokens/second |

**: Measured via app based [workflow](#step-6-build-mobile-apps)

# Instructions

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