Qwen2-1.5B-half

Qwen2-1.5B-half is a merge of the following models using LazyMergekit:

• Qwen/Qwen2-1.5B
• Qwen/Qwen2-1.5B

🧩 Configuration

slices:
  - sources:
    - model: Qwen/Qwen2-1.5B
      layer_range: [0, 8]
  - sources:
    - model: Qwen/Qwen2-1.5B
      layer_range: [20, 28]
merge_method: passthrough
dtype: bfloat16

💻 Usage

!pip install -qU transformers accelerate

from transformers import AutoTokenizer
import transformers
import torch

model = "nguyenthanhdo/Qwen2-1.5B-half"
messages = [{"role": "user", "content": "What is a large language model?"}]

tokenizer = AutoTokenizer.from_pretrained(model)
prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
pipeline = transformers.pipeline(
    "text-generation",
    model=model,
    torch_dtype=torch.float16,
    device_map="auto",
)

outputs = pipeline(prompt, max_new_tokens=256, do_sample=True, temperature=0.7, top_k=50, top_p=0.95)
print(outputs[0]["generated_text"])