fix loss normalization for ddp training

haoneng.lhn

2023-12-08 acb9a0fec8d8a4dabeedcbb8e08c26f66d7083f0

 egs/alimeeting/modular_sa_asr/local/make_textgrid_rttm.py

@@ -1,7 +1,10 @@
import argparse
import tqdm
import codecs
import textgrid
try:
    import textgrid
except:
    raise "Please install textgrid firstly: pip install textgrid"
import pdb

class Segment(object):