meta-llama/Llama-3.1-8B-Instruct · Llama-3.1-8B-Instruct tool-use ability is not as good as expected

I tried this example from the official document on NVIDIA GPU L40 https://www.llama.com/docs/model-cards-and-prompt-formats/llama3_1/#built-in-python-based-tool-calling. My input is:

<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are a helpful assistant with tool calling capabilities. When you receive a tool call response, use the output to format an answer to the orginal use question.<|eot_id|><|start_header_id|>user<|end_header_id|>

Given the following functions, please respond with a JSON for a function call with its proper arguments that best answers the given prompt.

Respond in the format {"name": function name, "parameters": dictionary of argument name and its value}. Do not use variables.

{
    "type": "function",
    "function": {
    "name": "get_current_conditions",
    "description": "Get the current weather conditions for a specific location",
    "parameters": {
        "type": "object",
        "properties": {
        "location": {
            "type": "string",
            "description": "The city and state, e.g., San Francisco, CA"
        },
        "unit": {
            "type": "string",
            "enum": ["Celsius", "Fahrenheit"],
            "description": "The temperature unit to use. Infer this from the user's location."
        }
        },
        "required": ["location", "unit"]
    }
    }
}

Question: what is the weather like in San Fransisco?<|eot_id|><|start_header_id|>assistant<|end_header_id|>

{"name": "get_current_conditions", "parameters": {"location": "San Francisco, CA", "unit": "Fahrenheit"}}<|eot_id|><|start_header_id|>ipython<|end_header_id|>

{"output": "Clouds giving way to sun Hi: 76° Tonight: Mainly clear early, then areas of low clouds forming Lo: 56°"}<|eot_id|><|start_header_id|>assistant<|end_header_id|>

and what I got from the model is
Note: The output is a simulated response and may not reflect the actual current weather conditions in San Francisco.
The official doc shows that the output should be
The weather in Menlo Park is currently cloudy with a high of 76° and a low of 56°, with clear skies expected tonight.<eot_id>
It seems that the ipython tag doesn't work. This is totally different from the result which the document shows.