Some specifical kind of models will clear their input when calling clearState()

[qiuxin2012]

Model like

val model = ParallelTable()
model.add(Identity()) // or other model with inplace.
model.add(Linear(5, 10))

val input = T(Tensor(2, 3), Tensor(2, 5))

model.forward(input)
model.clearState()
println(input)

It's output is

 {
	2: 0.0 0.0	0.0	0.0	0.0	
	   0.0	 0.0	0.0	0.0	0.0	
	   [com.intel.analytics.bigdl.tensor.DenseTensor$mcF$sp of size 2x5]
	1: [com.intel.analytics.bigdl.tensor.DenseTensor$mcF$sp with no dimension]
 }