Backgroud（背景信息）

• Describe/Explain the status of the problem you wish to solve.
• Attach relevant issues if there is any.
  The dyanmic loss scale currently only support the global overflow status and will be scaled at the same time.

Origin（信息来源）

• Explain which department/team made this request so that its priority can be given.

Benefit / Necessity （价值/作用）

• Describe/Explain the key value by fulfilling the request.
  The loss scale configs are divided into serveral groups. Each group has its own overflow status. The loss scale in one group will be scaled according to the overflow status of certain group.

Design（设计方案）

• Describe/Explain the general idea of the design. Pseudo-code is allowed
  Network
  | <- loss_scale1
  layer1
  | <- loss_scale2
  layer2
  | <- loss_scale3
  layer3
  | <- loss_scale4
  layer4
  | <- loss_scale5
  layer5
  | <- loss_scale6
  fc
  MindSpore support multi-layer dynamic loss scale