Initialize LlamaIndex & Vast.ai Workflow

from llama_index.core import VectorStoreIndex, Document
import requests

# Tool function to query Vast.ai marketplace GPUs
def search_vast_ai_gpus(min_vram_gb: int = 24, max_dph: float = 0.50):
    """Queries Vast.ai API for instances matching required hardware specs."""
    # Vast.ai query logic here
    pass

# Initialize LlamaIndex document store for benchmarking results
benchmark_docs = [Document(text="FP8 KV cache reduces VRAM consumption by 48% on RTX 4090.")]
index = VectorStoreIndex.from_documents(benchmark_docs)