### What this PR does / why we need it?
This PR aims to fix problematic dummy_run that will cause excessive npu
memory and to fix improper input_batch_size that will degrade running
performance.
### Does this PR introduce _any_ user-facing change?
N/A
### How was this patch tested?
by ci
- vLLM version: v0.15.0
- vLLM main: https://github.com/vllm-project/vllm/commit/v0.15.0
---------
Signed-off-by: Zetong Li <slippersss@126.com>
Signed-off-by: lilinsiman <lilinsiman@gmail.com>
Co-authored-by: lilinsiman <lilinsiman@gmail.com>