# Conceptual memory allocation for Speculative Decoding in vLLM/AMD
def allocate_kv_cache(model_config, device_memory_pool):
    target_memory = model_config.target_model_size * target_kv_overhead
    draft_memory = model_config.draft_model_size * draft_kv_overhead

    # AMD specific: ensure block alignment for MI300X memory controllers
    alignment = 256 * 1024  # 256KB alignment for optimal coalescing

    target_pool = device_memory_pool.allocate(target_memory, alignment)
    draft_pool = device_memory_pool.allocate(draft_memory, alignment)

    return target_pool, draft_pool