fix loss normalization for ddp training

haoneng.lhn

2023-12-08 acb9a0fec8d8a4dabeedcbb8e08c26f66d7083f0

 .github/workflows/UnitTest.yml

@@ -6,9 +6,7 @@
        - main
  push:
    branches:
      - dev_wjm
      - dev_jy
      - dev_wjm_infer

jobs:
  build: