[Quantization] import torch.fx only if torch.__version__ >= 1.8

wanchen.swc

2023-03-30 0438b966d6d9ef89fdd7a8d112d6e03b34122b1e

 egs/aishell2/transformerLM/run.sh

@@ -34,7 +34,7 @@
tag=exp1
model_dir="baseline_$(basename "${lm_config}" .yaml)_${lang}_${token_type}_${tag}"
lm_exp=${exp_dir}/exp/${model_dir}
inference_lm=valid.loss.ave.pth       # Language model path for decoding.
inference_lm=valid.loss.ave.pb       # Language model path for decoding.

stage=0
stop_stage=3