RuntimeErrror ipex_duplicate_import_error

[Seth Olav Yong]

Describe the bug
When trying to use IPEX LLM with LlamaIndex by following their example, a usage error occurs as IPEX is already imported.

How to reproduce
Follow the LlamaIndex example by importing IpexLLM and loading a model.

# Transform a string into input zephyr-specific input
def completion_to_prompt(completion):
    return f"<|system|>\n</s>\n<|user|>\n{completion}</s>\n<|assistant|>\n"


# Transform a list of chat messages into zephyr-specific input
def messages_to_prompt(messages):
    prompt = ""
    for message in messages:
        if message.role == "system":
            prompt += f"<|system|>\n{message.content}</s>\n"
        elif message.role == "user":
            prompt += f"<|user|>\n{message.content}</s>\n"
        elif message.role == "assistant":
            prompt += f"<|assistant|>\n{message.content}</s>\n"

    # ensure we start with a system prompt, insert blank if needed
    if not prompt.startswith("<|system|>\n"):
        prompt = "<|system|>\n</s>\n" + prompt

    # add final assistant prompt
    prompt = prompt + "<|assistant|>\n"

    return prompt

from llama_index.llms.ipex_llm import IpexLLM

llm = IpexLLM.from_model_id(
    model_name="HuggingFaceH4/zephyr-7b-alpha",
    tokenizer_name="HuggingFaceH4/zephyr-7b-alpha",
    context_window=512,
    max_new_tokens=128,
    generate_kwargs={"do_sample": False},
    completion_to_prompt=completion_to_prompt,
    messages_to_prompt=messages_to_prompt,
    device_map="xpu",
)

Screenshots
If applicable, add screenshots to help explain the problem

Environment information
Attached output of env-check.sh. I have an iGPU that is not being detected but works(unrelated).

conda_llama-index-1.txt

Additional context
Replacing ipex_importer.py with the version from BigDL fixes this issue.

[Qiyuan Gong]

Setting BIGDL_CHECK_DUPLICATE_IMPORT=0 in env can also disable this duplicate checker. For example,

export BIGDL_CHECK_DUPLICATE_IMPORT=0