globally set parameters cannot work in V2 API

[NHZlX]

the optimizer config in train.py still not be sended to c++ code!

  momentum_optimizer = paddle.optimizer.Momentum(
        momentum=0.9,
        regularization=paddle.optimizer.L2Regularization(rate=0.0005 * 50),
        learning_rate=0.1 / 50.0,
        learning_rate_decay_a=0.1,
        learning_rate_decay_b=50000 * 50,
        learning_rate_schedule='discexp')

part of the paramter proto

parameters {
  name: "_module13_1x1_bn.wbias"
  size: 1024
  initial_mean: 0.0
  initial_std: 0.0
  dims: 1
  dims: 1024
  initial_strategy: 0
  initial_smart: false
}
parameters {
  name: "___fc_layer_0__.w0"
  size: 104448
  initial_mean: 0.0
  initial_std: 0.03125
  dims: 1024
  dims: 102
  initial_strategy: 0
  initial_smart: true
}
parameters {
  name: "___fc_layer_0__.wbias"
  size: 102
  initial_mean: 0.0
  initial_std: 0.0
  dims: 1
  dims: 102
  initial_strategy: 0
  initial_smart: false
}

[lcy-seso]

I will check this.

[lcy-seso]

This is the same problem as reported in this issue #2042, and I found that we didn't fix this. This bug is terrible to users. I will fix it.

[lcy-seso]

This problem has been fixed so I close this issue. Thank you.