import torch
from transformers import AutoTokenizer, AutoModelForCausalLM
from peft import PeftModel
base_model_id = "google/gemma-4-E2B-it"
adapter_id = "sandeshv12/gemma4pharma"
tokenizer = AutoTokenizer.from_pretrained(adapter_id)
base_model = AutoModelForCausalLM.from_pretrained(
base_model_id,
torch_dtype=torch.bfloat16,
device_map="auto"
)
model = PeftModel.from_pretrained(base_model, adapter_id)
model.eval()
messages = [
{
"role": "user",
"content": (
"Patient: 65-year-old male with Type 2 Diabetes and CKD Stage 4 (eGFR 22 mL/min/1.73m2).\n"
"Prescription: Metformin 1000mg BID, Ciprofloxacin 500mg BID, Lisinopril 20mg OD.\n"
"Task: Identify contraindications, DDI risks, and recommended renal dose adjustments."
)
}
]
prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
with torch.no_grad():
outputs = model.generate(
**inputs,
max_new_tokens=512,
temperature=0.2,
do_sample=False
)
response = tokenizer.decode(outputs[0][inputs.input_ids.shape[1]:], skip_special_tokens=True)
print(response)