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com.intel.analytics.bigdl.nn.SpatialBatchNormalization.scala Maven / Gradle / Ivy
/*
* Copyright 2016 The BigDL Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intel.analytics.bigdl.nn
import com.intel.analytics.bigdl.nn.abstractnn.DataFormat
import com.intel.analytics.bigdl.tensor.{FloatType, Tensor}
import com.intel.analytics.bigdl.tensor.TensorNumericMath.TensorNumeric
import scala.reflect.ClassTag
/**
* This file implements Batch Normalization as described in the paper:
* "Batch Normalization: Accelerating Deep Network Training by Reducing Internal Covariate Shift"
* by Sergey Ioffe, Christian Szegedy
* This implementation is useful for inputs coming from convolution layers.
* For non-convolutional layers, see [[BatchNormalization]]
* The operation implemented is:
*
* ( x - mean(x) )
* y = -------------------- * gamma + beta
* standard-deviation(x)
*
* where gamma and beta are learnable parameters.
* The learning of gamma and beta is optional.
*/
@SerialVersionUID(- 9106336963903528047L)
class SpatialBatchNormalization[T: ClassTag](
nOutput: Int, eps: Double = 1e-5, momentum: Double = 0.1, affine: Boolean = true,
initWeight: Tensor[T] = null,
initBias: Tensor[T] = null,
initGradWeight: Tensor[T] = null,
initGradBias: Tensor[T] = null, dataFormat: DataFormat = DataFormat.NCHW)(
implicit ev: TensorNumeric[T])
extends BatchNormalization[T](nOutput, eps, momentum, affine,
initWeight, initBias, initGradWeight, initGradBias) {
override val nDim = 4
override def updateOutput(input: Tensor[T]): Tensor[T] = {
checkInputDim(input)
output.resizeAs(input)
_input.set(input)
makeBatch(_input)
val nInput = _input.size(channelDim)
if (runningMean.nElement == 0 || runningMean.nElement < nInput) {
initializeBuffer(nInput)
}
saveMean.resizeAs(runningMean).zero
saveStd.resizeAs(runningVar).fill(ev.zero)
if (dataFormat == DataFormat.NCHW) {
if (train) {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateOutputNCHWTrainFloat(
_input.asInstanceOf[Tensor[Float]], output.asInstanceOf[Tensor[Float]],
saveMean.asInstanceOf[Tensor[Float]], saveStd.asInstanceOf[Tensor[Float]],
runningMean.asInstanceOf[Tensor[Float]], runningVar.asInstanceOf[Tensor[Float]],
weight.asInstanceOf[Tensor[Float]], bias.asInstanceOf[Tensor[Float]],
eps.toFloat, momentum.toFloat, needFix = needFix)
} else {
SpatialBatchNormalization.updateOutputNCHWTrainDouble(
_input.asInstanceOf[Tensor[Double]], output.asInstanceOf[Tensor[Double]],
saveMean.asInstanceOf[Tensor[Double]], saveStd.asInstanceOf[Tensor[Double]],
runningMean.asInstanceOf[Tensor[Double]], runningVar.asInstanceOf[Tensor[Double]],
weight.asInstanceOf[Tensor[Double]], bias.asInstanceOf[Tensor[Double]],
eps, momentum, needFix = needFix)
}
} else {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateOutputNCHWInferFloat(
_input.asInstanceOf[Tensor[Float]], output.asInstanceOf[Tensor[Float]],
runningMean.asInstanceOf[Tensor[Float]], runningVar.asInstanceOf[Tensor[Float]],
weight.asInstanceOf[Tensor[Float]], bias.asInstanceOf[Tensor[Float]], eps.toFloat)
} else {
SpatialBatchNormalization.updateOutputNCHWInferDouble(
_input.asInstanceOf[Tensor[Double]], output.asInstanceOf[Tensor[Double]],
runningMean.asInstanceOf[Tensor[Double]], runningVar.asInstanceOf[Tensor[Double]],
weight.asInstanceOf[Tensor[Double]], bias.asInstanceOf[Tensor[Double]], eps)
}
}
} else {
if (train) {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateOutputNHWCTrainFloat(
_input.asInstanceOf[Tensor[Float]], output.asInstanceOf[Tensor[Float]],
saveMean.asInstanceOf[Tensor[Float]], saveStd.asInstanceOf[Tensor[Float]],
runningMean.asInstanceOf[Tensor[Float]], runningVar.asInstanceOf[Tensor[Float]],
weight.asInstanceOf[Tensor[Float]], bias.asInstanceOf[Tensor[Float]],
eps.toFloat, momentum.toFloat)
} else {
SpatialBatchNormalization.updateOutputNHWCTrainDouble(
_input.asInstanceOf[Tensor[Double]], output.asInstanceOf[Tensor[Double]],
saveMean.asInstanceOf[Tensor[Double]], saveStd.asInstanceOf[Tensor[Double]],
runningMean.asInstanceOf[Tensor[Double]], runningVar.asInstanceOf[Tensor[Double]],
weight.asInstanceOf[Tensor[Double]], bias.asInstanceOf[Tensor[Double]],
eps.toFloat, momentum.toFloat)
}
} else {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateOutputNHWCInferFloat(
_input.asInstanceOf[Tensor[Float]], output.asInstanceOf[Tensor[Float]],
runningMean.asInstanceOf[Tensor[Float]], runningVar.asInstanceOf[Tensor[Float]],
weight.asInstanceOf[Tensor[Float]], bias.asInstanceOf[Tensor[Float]], eps.toFloat)
} else {
SpatialBatchNormalization.updateOutputNHWCInferDouble(
_input.asInstanceOf[Tensor[Double]], output.asInstanceOf[Tensor[Double]],
runningMean.asInstanceOf[Tensor[Double]], runningVar.asInstanceOf[Tensor[Double]],
weight.asInstanceOf[Tensor[Double]], bias.asInstanceOf[Tensor[Double]], eps)
}
}
}
output
}
override def updateGradInput(input: Tensor[T], gradOutput: Tensor[T]): Tensor[T] = {
_gradOutput.set(gradOutput)
makeBatch(_gradOutput)
gxMean.zero()
gMean.zero()
if (dataFormat == DataFormat.NCHW) {
if (train) {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateGradInputNCHWTrainFloat(
_input.asInstanceOf[Tensor[Float]], _gradOutput.asInstanceOf[Tensor[Float]],
gradInput.asInstanceOf[Tensor[Float]], weight.asInstanceOf[Tensor[Float]],
saveMean.asInstanceOf[Tensor[Float]], saveStd.asInstanceOf[Tensor[Float]],
gMean.asInstanceOf[Tensor[Float]], gxMean.asInstanceOf[Tensor[Float]])
} else {
SpatialBatchNormalization.updateGradInputNCHWTrainDouble(
_input.asInstanceOf[Tensor[Double]], _gradOutput.asInstanceOf[Tensor[Double]],
gradInput.asInstanceOf[Tensor[Double]], weight.asInstanceOf[Tensor[Double]],
saveMean.asInstanceOf[Tensor[Double]], saveStd.asInstanceOf[Tensor[Double]],
gMean.asInstanceOf[Tensor[Double]], gxMean.asInstanceOf[Tensor[Double]])
}
} else {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateGradInputNCHWInferFloat(
_gradOutput.asInstanceOf[Tensor[Float]],
gradInput.asInstanceOf[Tensor[Float]], weight.asInstanceOf[Tensor[Float]],
bias.asInstanceOf[Tensor[Float]])
} else {
SpatialBatchNormalization.updateGradInputNCHWInferDouble(
_gradOutput.asInstanceOf[Tensor[Double]],
gradInput.asInstanceOf[Tensor[Double]], weight.asInstanceOf[Tensor[Double]],
bias.asInstanceOf[Tensor[Double]])
}
}
} else {
if (train) {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateGradInputNHWCTrainFloat(
_input.asInstanceOf[Tensor[Float]], _gradOutput.asInstanceOf[Tensor[Float]],
gradInput.asInstanceOf[Tensor[Float]], weight.asInstanceOf[Tensor[Float]],
saveMean.asInstanceOf[Tensor[Float]], saveStd.asInstanceOf[Tensor[Float]],
gMean.asInstanceOf[Tensor[Float]], gxMean.asInstanceOf[Tensor[Float]])
} else {
SpatialBatchNormalization.updateGradInputNHWCTrainDouble(
_input.asInstanceOf[Tensor[Double]], _gradOutput.asInstanceOf[Tensor[Double]],
gradInput.asInstanceOf[Tensor[Double]], weight.asInstanceOf[Tensor[Double]],
saveMean.asInstanceOf[Tensor[Double]], saveStd.asInstanceOf[Tensor[Double]],
gMean.asInstanceOf[Tensor[Double]], gxMean.asInstanceOf[Tensor[Double]])
}
} else {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.updateGradInputNHWCInferFloat(
_gradOutput.asInstanceOf[Tensor[Float]],
gradInput.asInstanceOf[Tensor[Float]], weight.asInstanceOf[Tensor[Float]],
bias.asInstanceOf[Tensor[Float]])
} else {
SpatialBatchNormalization.updateGradInputNHWCInferDouble(
_gradOutput.asInstanceOf[Tensor[Double]],
gradInput.asInstanceOf[Tensor[Double]], weight.asInstanceOf[Tensor[Double]],
bias.asInstanceOf[Tensor[Double]])
}
}
}
gradInput
}
override def accGradParameters(input: Tensor[T], gradOutput: Tensor[T]): Unit = {
if (weight == null || scaleW == 0) {
return
}
if (dataFormat == DataFormat.NCHW) {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.accGradientNCHWFloat(_gradOutput.asInstanceOf[Tensor[Float]],
gradWeight.asInstanceOf[Tensor[Float]], gradBias.asInstanceOf[Tensor[Float]],
_input.asInstanceOf[Tensor[Float]], saveMean.asInstanceOf[Tensor[Float]],
saveStd.asInstanceOf[Tensor[Float]], scaleW.toFloat, scaleB.toFloat)
} else {
SpatialBatchNormalization.accGradientNCHWDouble(_gradOutput.asInstanceOf[Tensor[Double]],
gradWeight.asInstanceOf[Tensor[Double]], gradBias.asInstanceOf[Tensor[Double]],
_input.asInstanceOf[Tensor[Double]], saveMean.asInstanceOf[Tensor[Double]],
saveStd.asInstanceOf[Tensor[Double]], scaleW, scaleB)
}
} else {
if (ev.getType() == FloatType) {
SpatialBatchNormalization.accGradientNHWCFloat(_gradOutput.asInstanceOf[Tensor[Float]],
gradWeight.asInstanceOf[Tensor[Float]], gradBias.asInstanceOf[Tensor[Float]],
_input.asInstanceOf[Tensor[Float]], saveMean.asInstanceOf[Tensor[Float]],
saveStd.asInstanceOf[Tensor[Float]], scaleW.toFloat, scaleB.toFloat)
} else {
SpatialBatchNormalization.accGradientNHWCDouble(_gradOutput.asInstanceOf[Tensor[Double]],
gradWeight.asInstanceOf[Tensor[Double]], gradBias.asInstanceOf[Tensor[Double]],
_input.asInstanceOf[Tensor[Double]], saveMean.asInstanceOf[Tensor[Double]],
saveStd.asInstanceOf[Tensor[Double]], scaleW, scaleB)
}
}
}
override def toString(): String = {
s"${getPrintName}[${ev.getType()}]($nOutput, $eps, $momentum, $affine)"
}
}
object SpatialBatchNormalization {
def apply[@specialized(Float, Double) T: ClassTag](
nOutput: Int,
eps: Double = 1e-5,
momentum: Double = 0.1,
affine: Boolean = true,
initWeight: Tensor[T] = null,
initBias: Tensor[T] = null,
initGradWeight: Tensor[T] = null,
initGradBias: Tensor[T] = null,
dataFormat: DataFormat = DataFormat.NCHW
)(implicit ev: TensorNumeric[T])
: SpatialBatchNormalization[T] = {
new SpatialBatchNormalization[T](nOutput, eps, momentum, affine,
initWeight, initBias, initGradWeight, initGradBias, dataFormat)
}
private[bigdl] def updateOutputNHWCInferFloat(input: Tensor[Float], output: Tensor[Float],
mean: Tensor[Float], variance: Tensor[Float], scale: Tensor[Float], offset: Tensor[Float],
eps: Float): Unit = {
require(input.isContiguous(), "BatchNorm NHWC require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(4)
val n = input.nElement()
val meanData = mean.storage().array()
val meanOffset = mean.storageOffset() - 1
val varData = variance.storage().array()
val varOffset = variance.storageOffset() - 1
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
var i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps).toFloat
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(c + meanOffset)) * invStd * scaleData(scaleOffset + c) +
offsetData(offsetOffset + c)
c += 1
}
i += nChannels
}
} else {
var i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps).toFloat
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(c + meanOffset)) * invStd
c += 1
}
i += nChannels
}
}
}
private[bigdl] def updateOutputNHWCInferDouble(input: Tensor[Double], output: Tensor[Double],
mean: Tensor[Double], variance: Tensor[Double], scale: Tensor[Double], offset: Tensor[Double],
eps: Double): Unit = {
require(input.isContiguous(), "BatchNorm NHWC require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(4)
val n = input.nElement()
val meanData = mean.storage().array()
val meanOffset = mean.storageOffset() - 1
val varData = variance.storage().array()
val varOffset = variance.storageOffset() - 1
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
var i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps)
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(meanOffset + c)) * invStd * scaleData(scaleOffset + c) +
offsetData(offsetOffset + c)
c += 1
}
i += nChannels
}
} else {
var i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps)
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(meanOffset + c)) * invStd
c += 1
}
i += nChannels
}
}
}
private[bigdl] def updateOutputNHWCTrainFloat(input: Tensor[Float], output: Tensor[Float],
saveMean: Tensor[Float], saveStd: Tensor[Float], runningMean: Tensor[Float],
runningVar: Tensor[Float], scale: Tensor[Float], offset: Tensor[Float],
eps: Float, momentum: Float,
batchVar: Tensor[Float] = null, saveVar: Tensor[Float] = null): Unit = {
require(input.isContiguous(), "BatchNorm NHWC require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(4)
if(saveMean.size(1) != nChannels) {
saveMean.resize(nChannels)
saveStd.resize(nChannels)
runningMean.resize(nChannels)
runningVar.resize(nChannels)
}
val meanData = saveMean.storage().array()
val meanOffset = saveMean.storageOffset() - 1
var i = 0
val n = input.nElement()
val frameSize = n / nChannels
while(i < n) {
var c = 0
while(c < nChannels) {
meanData(meanOffset + c) += inputData(inputOffset + i + c)
c += 1
}
i += nChannels
}
var c = 0
val runningMeanData = runningMean.storage().array()
val runningMeanDataOffset = runningMean.storageOffset() - 1
while(c < nChannels) {
meanData(meanOffset + c) /= frameSize
runningMeanData(runningMeanDataOffset + c) = meanData(meanOffset + c) * momentum +
(1 - momentum) * runningMeanData(c + runningMeanDataOffset)
c += 1
}
val stdData = saveStd.storage().array()
val stdOffset = saveStd.storageOffset() - 1
i = 0
while(i < n) {
var c = 0
while(c < nChannels) {
val diff = (inputData(inputOffset + i + c) - meanData(meanOffset + c))
stdData(stdOffset + c) += diff * diff
c += 1
}
i += nChannels
}
c = 0
val runningVarData = runningVar.storage().array()
val runningVarOffset = runningVar.storageOffset() - 1
while(c < nChannels) {
if (stdData(c + stdOffset) == 0 && eps == 0) {
stdData(c + stdOffset) = 0
if (saveVar != null) {
saveVar.setValue(c + 1, 0f)
}
if (batchVar != null) {
batchVar.setValue(c + 1, 0f)
}
} else {
val s = stdData(c + stdOffset)
val unbiasedVar = s / (frameSize - 1)
if (saveVar != null) {
saveVar.setValue(c + 1, s / frameSize)
}
if (batchVar != null) {
batchVar.setValue(c + 1, unbiasedVar)
}
stdData(c + stdOffset) = 1.0f / Math.sqrt(s / frameSize + eps).toFloat
runningVarData(c + runningVarOffset) = momentum * unbiasedVar +
(1 - momentum) * runningVarData(c + runningVarOffset)
}
c += 1
}
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(meanOffset + c)) * stdData(c + stdOffset) *
scaleData(scaleOffset + c) + offsetData(offsetOffset + c)
c += 1
}
i += nChannels
}
} else {
i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(meanOffset + c)) * stdData(c + stdOffset)
c += 1
}
i += nChannels
}
}
}
private[bigdl] def updateOutputNHWCTrainDouble(input: Tensor[Double], output: Tensor[Double],
saveMean: Tensor[Double], saveStd: Tensor[Double], runningMean: Tensor[Double],
runningVar: Tensor[Double], scale: Tensor[Double], offset: Tensor[Double],
eps: Double, momentum: Double,
batchVar: Tensor[Double] = null, saveVar: Tensor[Double] = null): Unit = {
require(input.isContiguous(), "BatchNorm NHWC require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(4)
if(saveMean.size(1) != nChannels) {
saveMean.resize(nChannels)
saveStd.resize(nChannels)
runningMean.resize(nChannels)
runningVar.resize(nChannels)
}
val meanData = saveMean.storage().array()
val meanOffset = saveMean.storageOffset() - 1
var i = 0
val n = input.nElement()
val frameSize = n / nChannels
while(i < n) {
var c = 0
while(c < nChannels) {
meanData(c + meanOffset) += inputData(inputOffset + i + c)
c += 1
}
i += nChannels
}
var c = 0
val runningMeanData = runningMean.storage().array()
val runningMeanOffset = runningMean.storageOffset() - 1
while(c < nChannels) {
meanData(c + meanOffset) /= frameSize
runningMeanData(c + runningMeanOffset) = meanData(c + meanOffset) * momentum +
(1 - momentum) * runningMeanData(c + runningMeanOffset)
c += 1
}
val stdData = saveStd.storage().array()
val stdOffset = saveStd.storageOffset() - 1
i = 0
while(i < n) {
var c = 0
while(c < nChannels) {
val diff = (inputData(inputOffset + i + c) - meanData(c + meanOffset))
stdData(c + stdOffset) += diff * diff
c += 1
}
i += nChannels
}
c = 0
val runningVarData = runningVar.storage().array()
val runningVarOffset = runningVar.storageOffset() - 1
while(c < nChannels) {
if (stdData(c + stdOffset) == 0 && eps == 0) {
stdData(c + stdOffset) = 0
if (saveVar != null) {
saveVar.setValue(c + 1, 0f)
}
if (batchVar != null) {
batchVar.setValue(c + 1, 0f)
}
} else {
val s = stdData(c + stdOffset)
val unbiasedVar = s / (frameSize - 1)
if (saveVar != null) {
saveVar.setValue(c + 1, s / frameSize)
}
if (batchVar != null) {
batchVar.setValue(c + 1, unbiasedVar)
}
stdData(c + stdOffset) = 1.0f / Math.sqrt(s / frameSize + eps).toFloat
runningVarData(c + runningVarOffset) = momentum * unbiasedVar +
(1 - momentum) * runningVarData(c + runningVarOffset)
}
c += 1
}
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(c + meanOffset)) * stdData(c + stdOffset) *
scaleData(c + scaleOffset) + offsetData(c + offsetOffset)
c += 1
}
i += nChannels
}
} else {
i = 0
while (i < n) {
var c = 0
while (c < nChannels) {
outputData(i + outputOffset + c) = (inputData(i + inputOffset + c) -
meanData(c + meanOffset)) * stdData(c + stdOffset)
c += 1
}
i += nChannels
}
}
}
private[bigdl] def updateOutputNCHWInferFloat(input: Tensor[Float], output: Tensor[Float],
mean: Tensor[Float], variance: Tensor[Float], scale: Tensor[Float],
offset: Tensor[Float], eps: Float): Unit = {
require(input.isContiguous(), "BatchNorm NCHW require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val meanData = mean.storage().array()
val meanOffset = mean.storageOffset() - 1
val varData = variance.storage().array()
val varOffset = variance.storageOffset() - 1
val nChannels = input.size(2)
val nBatch = input.size(1)
val nFrame = input.size(3) * input.size(4)
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
var i = 0
var b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps).toFloat
outputData(i + outputOffset) = (inputData(i + inputOffset) - meanData(c + meanOffset)) *
invStd * scaleData(c + scaleOffset) + offsetData(c + offsetOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
var i = 0
var b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps).toFloat
outputData(i + outputOffset) = (inputData(i + inputOffset) - meanData(c + meanOffset)) *
invStd
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateOutputNCHWInferDouble(input: Tensor[Double], output: Tensor[Double],
mean: Tensor[Double], variance: Tensor[Double], scale: Tensor[Double], offset: Tensor[Double],
eps: Double)
: Unit = {
require(input.isContiguous(), "BatchNorm NCHW require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val meanData = mean.storage().array()
val meanOffset = mean.storageOffset() - 1
val varData = variance.storage().array()
val varOffset = variance.storageOffset() - 1
val nChannels = input.size(2)
val nBatch = input.size(1)
val nFrame = input.size(3) * input.size(4)
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
var i = 0
var b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps)
outputData(i + outputOffset) = (inputData(i + inputOffset) - meanData(c + meanOffset)) *
invStd * scaleData(c + scaleOffset) + offsetData(c + offsetOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
var i = 0
var b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
val invStd = 1 / Math.sqrt(varData(varOffset + c) + eps)
outputData(i + outputOffset) = (inputData(i + inputOffset) - meanData(c + meanOffset)) *
invStd
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateGradInputNHWCTrainFloat(
input: Tensor[Float],
gradOutput: Tensor[Float],
gradInput: Tensor[Float],
scale: Tensor[Float],
saveMean: Tensor[Float],
saveStd: Tensor[Float],
gMean: Tensor[Float],
gxMean: Tensor[Float]
): Unit = {
require(input.nDimension() == 4, "BN require a 4D input")
require(input.isContiguous(), "input is not contiguous")
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(4)
require(saveMean.size(1) == nChannel, "saveMean length is not consistent with channel number")
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
if (gMean.isEmpty) {
gMean.resize(nChannel)
gxMean.resize(nChannel)
}
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val gMeanData = gMean.storage().array()
val gxMeanData = gxMean.storage().array()
val n = gradOutput.nElement()
var i = 0
while(i < n) {
var c = 0
while(c < nChannel) {
gMeanData(c) += gradOutputData(i + gradOutputOffset)
gxMeanData(c) += gradOutputData(i + gradOutputOffset) *
(inputData(i + inputOffset) - saveMeanData(c + saveMeanOffset))
c += 1
i += 1
}
}
var c = 0
val size = n / nChannel
while(c < nChannel) {
gMeanData(c) /= size
gxMeanData(c) /= size
c += 1
}
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
c += 1
i += 1
}
}
} else {
i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
c += 1
i += 1
}
}
}
}
private[bigdl] def updateGradInputNHWCTrainDouble(
input: Tensor[Double],
gradOutput: Tensor[Double],
gradInput: Tensor[Double],
scale: Tensor[Double],
saveMean: Tensor[Double],
saveStd: Tensor[Double],
gMean: Tensor[Double],
gxMean: Tensor[Double]
): Unit = {
require(input.nDimension() == 4, "BN require a 4D input")
require(input.isContiguous(), "input is not contiguous")
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(4)
require(saveMean.size(1) == nChannel, "saveMean length is not consistent with channel number")
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
if (gMean.isEmpty) {
gMean.resize(nChannel)
gxMean.resize(nChannel)
}
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val gMeanData = gMean.storage().array()
val gxMeanData = gxMean.storage().array()
val n = gradOutput.nElement()
var i = 0
while(i < n) {
var c = 0
while(c < nChannel) {
gMeanData(c) += gradOutputData(i + gradOutputOffset)
gxMeanData(c) += gradOutputData(i + gradOutputOffset) *
(inputData(i + inputOffset) - saveMeanData(c + saveMeanOffset))
c += 1
i += 1
}
}
var c = 0
val size = n / nChannel
while(c < nChannel) {
gMeanData(c) /= size
gxMeanData(c) /= size
c += 1
}
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
c += 1
i += 1
}
}
} else {
i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
c += 1
i += 1
}
}
}
}
private[bigdl] def updateGradInputNHWCInferFloat(
gradOutput: Tensor[Float],
gradInput: Tensor[Float],
scale: Tensor[Float],
saveStd: Tensor[Float]
): Unit = {
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(4)
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val n = gradOutput.nElement()
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
var i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * gradOutputData(gradOutputOffset + i)
c += 1
i += 1
}
}
} else {
var i = 0
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * gradOutputData(gradOutputOffset + i)
c += 1
i += 1
}
}
}
}
private[bigdl] def updateGradInputNHWCInferDouble(
gradOutput: Tensor[Double],
gradInput: Tensor[Double],
scale: Tensor[Double],
saveStd: Tensor[Double]
): Unit = {
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(4)
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val n = gradOutput.nElement()
var i = 0
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * gradOutputData(gradOutputOffset + i)
c += 1
i += 1
}
}
} else {
while (i < n) {
var c = 0
while (c < nChannel) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * gradOutputData(gradOutputOffset + i)
c += 1
i += 1
}
}
}
}
private[bigdl] def updateGradInputNCHWTrainFloat(
input: Tensor[Float],
gradOutput: Tensor[Float],
gradInput: Tensor[Float],
scale: Tensor[Float],
saveMean: Tensor[Float],
saveStd: Tensor[Float],
gMean: Tensor[Float],
gxMean: Tensor[Float]
): Unit = {
require(input.nDimension() == 4, "BN require a 4D input")
require(input.isContiguous(), "input is not contiguous")
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(2)
require(saveMean.size(1) == nChannel, "saveMean length is not consistent with channel number")
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
if (gMean.isEmpty) {
gMean.resize(nChannel)
gxMean.resize(nChannel)
}
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val gMeanData = gMean.storage().array()
val gxMeanData = gxMean.storage().array()
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
val n = gradOutput.nElement()
var b = 0
var i = 0
while(b < nBatch) {
var c = 0
while(c < nChannel) {
var k = 0
while(k < frameSize) {
gMeanData(c) += gradOutputData(i + gradOutputOffset)
gxMeanData(c) += gradOutputData(i + gradOutputOffset) *
(inputData(i + inputOffset) - saveMeanData(c + saveMeanOffset))
k += 1
i += 1
}
c += 1
}
b += 1
}
var c = 0
val size = n / nChannel
while(c < nChannel) {
gMeanData(c) /= size
gxMeanData(c) /= size
c += 1
}
i = 0
b = 0
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * (gradOutputData(gradOutputOffset + i) - gMeanData(c) -
gxMeanData(c) * invStd * invStd * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)))
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateOutputNCHWTrainFloat(input: Tensor[Float], output: Tensor[Float],
saveMean: Tensor[Float], saveStd: Tensor[Float], runningMean: Tensor[Float],
runningVar: Tensor[Float], scale: Tensor[Float], offset: Tensor[Float],
eps: Float, momentum: Float,
batchVar: Tensor[Float] = null, saveVar: Tensor[Float] = null, needFix: Boolean = false)
: Unit = {
require(input.isContiguous(), "BatchNorm NCHW require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(2)
val nBatch = input.size(1)
val nFrame = input.size(3) * input.size(4)
if(saveMean.size(1) != nChannels) {
saveMean.resize(nChannels)
saveStd.resize(nChannels)
runningMean.resize(nChannels)
runningVar.resize(nChannels)
}
val meanData = saveMean.storage().array()
val meanOffset = saveMean.storageOffset() - 1
var i = 0
var b = 0
while(b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
var meanSum = 0f
while(k < nFrame) {
meanSum += inputData(i + inputOffset)
k += 1
i += 1
}
meanData(c + meanOffset) += meanSum
c += 1
}
b += 1
}
val n = input.nElement()
val frameSize = n / nChannels
var c = 0
val runningMeanData = runningMean.storage().array()
val runningMeanOffset = runningMean.storageOffset() - 1
while(c < nChannels) {
meanData(c + meanOffset) /= frameSize
runningMeanData(c + runningMeanOffset) = meanData(c + meanOffset) * momentum +
(1 - momentum) * runningMeanData(c + runningMeanOffset)
c += 1
}
val stdData = saveStd.storage().array()
val stdOffset = saveStd.storageOffset() - 1
i = 0
b = 0
while(b < nBatch) {
var c = 0
while(c < nChannels) {
var k = 0
var stdSum = 0f
while(k < nFrame) {
val diff = (inputData(i + inputOffset) - meanData(c + meanOffset))
stdSum += diff * diff
k += 1
i += 1
}
stdData(c + stdOffset) += stdSum
c += 1
}
b += 1
}
c = 0
val runningVarData = runningVar.storage().array()
val runningVarOffset = runningVar.storageOffset() - 1
while(c < nChannels) {
if (stdData(c + stdOffset) == 0 && eps == 0) {
stdData(c + stdOffset) = 0
if (saveVar != null) {
saveVar.setValue(c + 1, 0f)
}
if (batchVar != null) {
batchVar.setValue(c + 1, 0f)
}
} else {
val s = stdData(c + stdOffset)
val unbiasedVar = s / (frameSize - 1)
if (saveVar != null) {
saveVar.setValue(c + 1, s / frameSize)
}
if (batchVar != null) {
batchVar.setValue(c + 1, unbiasedVar)
}
stdData(c + stdOffset) = 1.0f / Math.sqrt(s / frameSize + eps).toFloat
runningVarData(c + runningVarOffset) = momentum * unbiasedVar +
(1 - momentum) * runningVarData(c + runningVarOffset)
}
c += 1
}
if (needFix) {
c = 0
while(c < nChannels) {
meanData(c + meanOffset) = 0
stdData(c + stdOffset) = 0.0001f
c += 1
}
}
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
i = 0
b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
outputData(i + outputOffset) = (inputData(i + inputOffset) -
meanData(c + meanOffset)) * stdData(c + stdOffset) *
scaleData(c + scaleOffset) + offsetData(c + offsetOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
i = 0
b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
outputData(i + outputOffset) = (inputData(i + inputOffset) -
meanData(c + meanOffset)) * stdData(c + stdOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateOutputNCHWTrainDouble(input: Tensor[Double], output: Tensor[Double],
saveMean: Tensor[Double], saveStd: Tensor[Double], runningMean: Tensor[Double],
runningVar: Tensor[Double], scale: Tensor[Double], offset: Tensor[Double],
eps: Double, momentum: Double,
batchVar: Tensor[Double] = null, saveVar: Tensor[Double] = null, needFix: Boolean = false)
: Unit = {
require(input.isContiguous(), "BatchNorm NCHW require a contiguous input")
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val outputData = output.storage().array()
val outputOffset = output.storageOffset() - 1
val nChannels = input.size(2)
val nBatch = input.size(1)
val nFrame = input.size(3) * input.size(4)
if(saveMean.size(1) != nChannels) {
saveMean.resize(nChannels)
saveStd.resize(nChannels)
runningMean.resize(nChannels)
runningVar.resize(nChannels)
}
val meanData = saveMean.storage().array()
val meanOffset = saveMean.storageOffset() - 1
var i = 0
var b = 0
while(b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
var meanSum = 0d
while(k < nFrame) {
meanSum += inputData(i + inputOffset)
k += 1
i += 1
}
meanData(c + meanOffset) += meanSum
c += 1
}
b += 1
}
val n = input.nElement()
val frameSize = n / nChannels
var c = 0
val runningMeanData = runningMean.storage().array()
val runningMeanOffset = runningMean.storageOffset() - 1
while(c < nChannels) {
meanData(c + meanOffset) /= frameSize
runningMeanData(c + runningMeanOffset) = meanData(c + meanOffset) * momentum +
(1 - momentum) * runningMeanData(c + runningMeanOffset)
c += 1
}
val stdData = saveStd.storage().array()
val stdOffset = saveStd.storageOffset() - 1
i = 0
b = 0
while(b < nBatch) {
var c = 0
while(c < nChannels) {
var k = 0
while(k < nFrame) {
val diff = (inputData(i + inputOffset) - meanData(c + meanOffset))
stdData(c + stdOffset) += diff * diff
k += 1
i += 1
}
c += 1
}
b += 1
}
c = 0
val runningVarData = runningVar.storage().array()
val runningVarOffset = runningVar.storageOffset() - 1
while(c < nChannels) {
if (stdData(c + stdOffset) == 0 && eps == 0) {
stdData(c + stdOffset) = 0
if (saveVar != null) {
saveVar.setValue(c + 1, 0f)
}
if (batchVar != null) {
batchVar.setValue(c + 1, 0f)
}
} else {
val s = stdData(c + stdOffset)
val unbiasedVar = s / (frameSize - 1)
if (saveVar != null) {
saveVar.setValue(c + 1, s / frameSize)
}
if (batchVar != null) {
batchVar.setValue(c + 1, unbiasedVar)
}
stdData(c + stdOffset) = 1.0 / Math.sqrt(s / frameSize + eps)
runningVarData(c + stdOffset) = momentum * unbiasedVar + (1 - momentum) *
runningVarData(c + runningVarOffset)
}
c += 1
}
if (needFix) {
c = 0
while(c < nChannels) {
meanData(c + meanOffset) = 0
stdData(c + stdOffset) = 0.0001
c += 1
}
}
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
val offsetData = offset.storage().array()
val offsetOffset = offset.storageOffset() - 1
i = 0
b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
outputData(i + outputOffset) = (inputData(i + inputOffset) -
meanData(c + meanOffset)) * stdData(c + stdOffset) *
scaleData(c + scaleOffset) + offsetData(c + offsetOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
i = 0
b = 0
while (b < nBatch) {
var c = 0
while (c < nChannels) {
var k = 0
while (k < nFrame) {
outputData(i + outputOffset) = (inputData(i + inputOffset) -
meanData(c + meanOffset)) * stdData(c + stdOffset)
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateGradInputNCHWTrainDouble(
input: Tensor[Double],
gradOutput: Tensor[Double],
gradInput: Tensor[Double],
scale: Tensor[Double],
saveMean: Tensor[Double],
saveStd: Tensor[Double],
gMean: Tensor[Double],
gxMean: Tensor[Double]
): Unit = {
require(input.nDimension() == 4, "BN require a 4D input")
require(input.isContiguous(), "input is not contiguous")
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(2)
require(saveMean.size(1) == nChannel, "saveMean length is not consistent with channel number")
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
if (gMean.isEmpty) {
gMean.resize(saveMean.size(1))
gxMean.resize(saveMean.size(1))
}
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val gMeanData = gMean.storage().array()
val gxMeanData = gxMean.storage().array()
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
val n = gradOutput.nElement()
var b = 0
var i = 0
while(b < nBatch) {
var c = 0
while(c < nChannel) {
var k = 0
while(k < frameSize) {
gMeanData(c) += gradOutputData(i + gradOutputOffset)
gxMeanData(c) += gradOutputData(i + gradOutputOffset) *
(inputData(i + inputOffset) - saveMeanData(c + saveMeanOffset))
k += 1
i += 1
}
c += 1
}
b += 1
}
var c = 0
val size = n / nChannel
while(c < nChannel) {
gMeanData(c) /= size
val invStd = saveStdData(saveStdOffset + c)
gxMeanData(c) = gxMeanData(c) * invStd * invStd / size
c += 1
}
i = 0
b = 0
if (scale != null) {
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = (gradOutputData(gradOutputOffset + i) -
gMeanData(c) - (inputData(inputOffset + i) - saveMeanData(saveMeanOffset + c)) *
gxMeanData(c)) * invStd * scaleData(scaleOffset + c)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = (gradOutputData(gradOutputOffset + i) -
gMeanData(c) - (inputData(inputOffset + i) - saveMeanData(saveMeanOffset + c)) *
gxMeanData(c)) * invStd
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateGradInputNCHWInferFloat(
gradOutput: Tensor[Float],
gradInput: Tensor[Float],
scale: Tensor[Float],
saveStd: Tensor[Float]
): Unit = {
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(2)
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
var b = 0
var i = 0
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * gradOutputData(gradOutputOffset + i)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * gradOutputData(gradOutputOffset + i)
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def updateGradInputNCHWInferDouble(
gradOutput: Tensor[Double],
gradInput: Tensor[Double],
scale: Tensor[Double],
saveStd: Tensor[Double]
): Unit = {
require(gradOutput.nDimension() == 4, "BN require a 4D gradient")
require(gradOutput.isContiguous(), "gradient is not contiguous")
val nChannel = gradOutput.size(2)
require(saveStd.size(1) == nChannel, "saveStd length is not consistent with channel number")
gradInput.resizeAs(gradOutput)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradInputData = gradInput.storage().array()
val gradInputOffset = gradInput.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
var b = 0
var i = 0
if (scale != null) {
require(scale.size(1) == nChannel, "scale length is not consistent with channel number")
val scaleData = scale.storage().array()
val scaleOffset = scale.storageOffset() - 1
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) = scaleData(scaleOffset + c) *
invStd * gradOutputData(gradOutputOffset + i)
k += 1
i += 1
}
c += 1
}
b += 1
}
} else {
while (b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while (k < frameSize) {
val invStd = saveStdData(saveStdOffset + c)
gradInputData(gradInputOffset + i) =
invStd * gradOutputData(gradOutputOffset + i)
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
private[bigdl] def accGradientNHWCFloat(gradOutput: Tensor[Float],
gradWeight: Tensor[Float], gradBias: Tensor[Float],
input: Tensor[Float], saveMean: Tensor[Float],
saveStd: Tensor[Float], scaleW: Float, scaleB: Float): Unit = {
require(gradOutput.isContiguous(), "gradOutput must be contiguous")
require(gradWeight.isContiguous(), "gradWeight must be contiguous")
require(gradBias.isContiguous(), "gradBias must be contiguous")
require(input.isContiguous(), "gradWeight must be contiguous")
require(saveMean.nDimension() == 1, "saveMean must be 1D")
require(saveStd.nDimension() == 1, "saveStd must be 1D")
val nChannel = saveMean.size(1)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradWeightData = gradWeight.storage().array()
val gradWeightOffset = gradWeight.storageOffset() - 1
val gradBiasData = gradBias.storage().array()
val gradBiasOffset = gradBias.storageOffset() - 1
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
var i = 0
val n = input.nElement()
while(i < n) {
var c = 0
while(c < nChannel) {
val g = gradOutputData(gradOutputOffset + i)
gradWeightData(c + gradWeightOffset) += g *
(inputData(inputOffset + i) - saveMeanData(saveMeanOffset + c)) *
saveStdData(saveStdOffset + c) * scaleW
gradBiasData(c + gradBiasOffset) += g * scaleB
i += 1
c += 1
}
}
}
private[bigdl] def accGradientNHWCDouble(gradOutput: Tensor[Double],
gradWeight: Tensor[Double], gradBias: Tensor[Double],
input: Tensor[Double], saveMean: Tensor[Double],
saveStd: Tensor[Double], scaleW: Double, scaleB: Double): Unit = {
require(gradOutput.isContiguous(), "gradOutput must be contiguous")
require(gradWeight.isContiguous(), "gradWeight must be contiguous")
require(gradBias.isContiguous(), "gradBias must be contiguous")
require(input.isContiguous(), "gradWeight must be contiguous")
require(saveMean.nDimension() == 1, "saveMean must be 1D")
require(saveStd.nDimension() == 1, "saveStd must be 1D")
val nChannel = saveMean.size(1)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradWeightData = gradWeight.storage().array()
val gradWeightOffset = gradWeight.storageOffset() - 1
val gradBiasData = gradBias.storage().array()
val gradBiasOffset = gradBias.storageOffset() - 1
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
var i = 0
val n = input.nElement()
while(i < n) {
var c = 0
while(c < nChannel) {
val g = gradOutputData(gradOutputOffset + i)
gradWeightData(c + gradWeightOffset) += g *
(inputData(inputOffset + i) - saveMeanData(saveMeanOffset + c)) *
saveStdData(saveStdOffset + c) * scaleW
gradBiasData(c + gradBiasOffset) += g * scaleB
i += 1
c += 1
}
}
}
private[bigdl] def accGradientNCHWFloat(gradOutput: Tensor[Float],
gradWeight: Tensor[Float], gradBias: Tensor[Float],
input: Tensor[Float], saveMean: Tensor[Float],
saveStd: Tensor[Float], scaleW: Float, scaleB: Float): Unit = {
require(gradOutput.isContiguous(), "gradOutput must be contiguous")
require(gradWeight.isContiguous(), "gradWeight must be contiguous")
require(gradBias.isContiguous(), "gradBias must be contiguous")
require(input.isContiguous(), "gradWeight must be contiguous")
require(saveMean.nDimension() == 1, "saveMean must be 1D")
require(saveStd.nDimension() == 1, "saveStd must be 1D")
val nChannel = saveMean.size(1)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradWeightData = gradWeight.storage().array()
val gradWeightOffset = gradWeight.storageOffset() - 1
val gradBiasData = gradBias.storage().array()
val gradBiasOffset = gradBias.storageOffset() - 1
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
var i = 0
var b = 0
while(b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while(k < frameSize) {
val g = gradOutputData(gradOutputOffset + i)
gradWeightData(c + gradWeightOffset) += g *
(inputData(inputOffset + i) - saveMeanData(saveMeanOffset + c)) *
saveStdData(saveStdOffset + c) * scaleW
gradBiasData(c + gradBiasOffset) += g * scaleB
k += 1
i += 1
}
c += 1
}
b += 1
}
}
private[bigdl] def accGradientNCHWDouble(gradOutput: Tensor[Double],
gradWeight: Tensor[Double], gradBias: Tensor[Double],
input: Tensor[Double], saveMean: Tensor[Double],
saveStd: Tensor[Double], scaleW: Double, scaleB: Double): Unit = {
require(gradOutput.isContiguous(), "gradOutput must be contiguous")
require(gradWeight.isContiguous(), "gradWeight must be contiguous")
require(gradBias.isContiguous(), "gradBias must be contiguous")
require(input.isContiguous(), "gradWeight must be contiguous")
require(saveMean.nDimension() == 1, "saveMean must be 1D")
require(saveStd.nDimension() == 1, "saveStd must be 1D")
val nChannel = saveMean.size(1)
val gradOutputData = gradOutput.storage().array()
val gradOutputOffset = gradOutput.storageOffset() - 1
val gradWeightData = gradWeight.storage().array()
val gradWeightOffset = gradWeight.storageOffset() - 1
val gradBiasData = gradBias.storage().array()
val gradBiasOffset = gradBias.storageOffset() - 1
val inputData = input.storage().array()
val inputOffset = input.storageOffset() - 1
val saveMeanData = saveMean.storage().array()
val saveMeanOffset = saveMean.storageOffset() - 1
val saveStdData = saveStd.storage().array()
val saveStdOffset = saveStd.storageOffset() - 1
val nBatch = gradOutput.size(1)
val frameSize = gradOutput.size(3) * gradOutput.size(4)
var i = 0
var b = 0
while(b < nBatch) {
var c = 0
while (c < nChannel) {
var k = 0
while(k < frameSize) {
val g = gradOutputData(gradOutputOffset + i)
gradWeightData(c + gradWeightOffset) += scaleW * (inputData(inputOffset + i) -
saveMeanData(saveMeanOffset + c)) * g * saveStdData(saveStdOffset + c)
gradBiasData(c + gradBiasOffset) += g * scaleB
k += 1
i += 1
}
c += 1
}
b += 1
}
}
}
