---
license: apache-2.0
tags:
- java
- qwen2
- qwen2.java
---
# Pure quantizations of `Qwen2-Math-1.5B-Instruct` for [qwen2.java](https://github.com/mukel/qwen2.java).

In the wild, Q8_0 quantizations are fine, but Q4_0 quantizations are rarely pure e.g. the output.weights tensor is quantized with Q6_K, instead of Q4_0.  
A pure Q4_0 quantization can be generated from a high precision (F32, F16, BFLOAT16) .gguf source with the quantize utility from llama.cpp as follows:

```
./quantize --pure ./Qwen2-1.5B-Math-Instruct-F16.gguf ./Qwen2-1.5B-Math-Instruct-Q4_0.gguf Q4_0
```

Original model: [https://huggingface.co/Qwen/Qwen2-Math-1.5B-Instruct](https://huggingface.co/Qwen/Qwen2-Math-1.5B-Instruct)


## Model Details


For more details, please refer to the original [blog post](https://qwenlm.github.io/blog/qwen2-math/) and [GitHub repo](https://github.com/QwenLM/Qwen2-Math).