public override Tensor Normalization(Tensor X, Tensor S, Tensor B, int pool, int axis, float epsilon)
{
if (axis != 3 && axis != -1)
{
throw new NotImplementedException();
}
if (pool <= 0)
{
pool = X.batch;
}
if (pool > 1)
{
throw new NotImplementedException(); // @TODO: support other types of Normalization at test time
}
// Currently supported only pool=1 (InstanceNormalization)
var meanVariance = GlobalAvgVariancePool2D(X);
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.NormalizationTail(X.shape, O.shape));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensor("W", meanVariance.shape, Pin(meanVariance).buffer);
fn.shader.SetFloat("_Epsilon", epsilon);
fn.Dispatch();
return(ScaleBias(O, S, B));
}
protected override Tensor Pool2D(string kernelName, Tensor X, int[] pool, int[] stride, int[] pad)
{
Assert.AreEqual(pool.Length, 2);
Assert.AreEqual(stride.Length, 2);
if (pad[0] == 0 && pad[1] == 0 && pad[2] == 0 && pad[3] == 0)
{
kernelName += "_NoPads";
}
var O = NewTensor(X.shape.ApplyPool(pool, stride, pad));
var fn = BestKernel(ComputeKernelLibrary.Pool2D(X.shape, O.shape, kernelName));
if (printKernels)
{
D.Log($"{fn.func.kernelName}: {O.shape} = {X.shape} ^ pool: {pool[0]},{pool[1]} stride: {stride[0]},{stride[1]} pad:{pad[0]},{pad[1]}");
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pool", pool);
fn.shader.SetInts("_Stride", stride);
fn.shader.SetInts("_Pad", pad);
fn.Dispatch();
return(O);
}
public override Tensor DepthwiseConv2D(Tensor X, Tensor K, Tensor B, int[] stride, int[] pad)
{
if (K.kernelDepth != 1)
{
return(base.DepthwiseConv2D(X, K, B, stride, pad));
}
Assert.AreEqual(K.kernelDepth, 1);
Assert.AreEqual(K.kernelCount, X.channels);
Assert.AreEqual(K.kernelCount, B.flatWidth);
Assert.AreEqual(B.flatWidth, B.length);
Assert.AreEqual(stride.Length, 2);
Assert.AreEqual(pad.Length, 4);
var O = NewTensor(X.shape.ApplyKernel(K.shape, stride, pad));
var fn = BestKernel(ComputeKernelLibrary.DepthwiseConv2D(X.shape, K.shape, O.shape));
if (printKernels)
{
Debug.Log($"{fn.func.kernelName}: {O.shape} = {X.shape} ∆ {K.shape} stride: {stride[0]},{stride[1]} pad:{pad[0]},{pad[1]}");
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensorDecl("K", K.shape, Pin(K).offset);
fn.SetTensorDecl("B", B.shape, Pin(B).offset);
Assert.AreEqual(Pin(K).buffer, Pin(B).buffer);
fn.SetTensorBuffer("WBK", Pin(K).buffer);
fn.shader.SetInts("_Stride", stride);
fn.shader.SetInts("_Pad", pad);
fn.Dispatch();
return(O);
}
protected override Tensor ApplyPadding(Tensor X, int[] pad, string kernelName, float constant = 0.0f)
{
Assert.AreEqual(pad.Length, 4);
var O = NewTensor(X.shape.ApplyBorder(pad));
var fn = BestKernel(ComputeKernelLibrary.Padding(X.shape, O.shape, kernelName));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pad", pad);
if (kernelName == "Border2D")
{
// NOTE: negative "pad" variable will crop X tensor
int croppedWidth = X.width - Math.Max(0, -pad[2]);
int croppedHeight = X.height - Math.Max(0, -pad[3]);
var croppedSize = new int[] { 0, 0 };
croppedSize[0] = croppedWidth;
croppedSize[1] = croppedHeight;
fn.shader.SetInts("_Pool", croppedSize);
fn.shader.SetFloat("_Beta", constant);
}
fn.Dispatch();
return(O);
}
// ---------------------------------------------------------------------------------
public override Tensor Dense(Tensor X, Tensor W, Tensor B)
{
Assert.IsTrue(W.dimensions <= 2);
Assert.AreEqual(B.flatWidth, B.length);
Assert.AreEqual(X.flatWidth, W.flatHeight);
var O = NewTensor(X.flatHeight, W.flatWidth);
var itemSize = 4; // @TODO: itemSizeInBytes == 2 | float16
var fn = BestKernel(ComputeKernelLibrary.Dense(X.shape, W.shape, O.shape, itemSize >> 2));
if (printKernels)
{
Debug.Log($"{fn.func.kernelName}: {O.shape} = {X.shape} * {W.shape}");
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensorDecl("W", W.shape, Pin(W).offset);
fn.SetTensorDecl("B", B.shape, Pin(B).offset);
Assert.AreEqual(Pin(W).buffer, Pin(B).buffer);
fn.SetTensorBuffer("WBK", Pin(W).buffer);
fn.Dispatch();
return(O);
}
public override Tensor ElementwiseWithBroadcast(string kernelName, Tensor[] tensors)
{
Assert.IsTrue(tensors.Length > 0);
Tensor outputTensor1 = NewTensor(TensorExtensions.MaxShape(tensors));
Tensor outputTensor2 = null;
if (tensors.Length > 2)
{
outputTensor2 = NewTensor(TensorExtensions.MaxShape(tensors));
}
var X = tensors[0];
var fn = BestKernel(ComputeKernelLibrary.Broadcast(X.shape, outputTensor1.shape, kernelName));
Tensor O = null;
for (int t = 1; t < tensors.Length; ++t)
{
var B = tensors[t];
O = (t % 2 == 1)?outputTensor1:outputTensor2;
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensor("B", B.shape, Pin(B).buffer, Pin(B).offset);
fn.Dispatch();
X = O;
}
return(O);
}
public override Tensor LogicalNot(Tensor X)
{
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.Activation(X.shape, O.shape, "LogicalNot"));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.Dispatch();
return(O);
}
public override Tensor GlobalAvgVariancePool2D(Tensor X)
{
var O = NewTensor(X.batch, 2, 1, X.channels);
var fn = BestKernel(ComputeKernelLibrary.GlobalPool2D(X.shape, O.shape, "GlobalAvgVariancePool2D"));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.Dispatch();
return(O);
}
public override Tensor LogSoftmax(Tensor X)
{
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.LogSoftmax(X.shape, O.shape));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.Dispatch();
return(O);
}
protected override Tensor Activation(string kernelName, Tensor X, float alpha = 0f, float beta = 0f)
{
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.Activation(X.shape, O.shape, kernelName));
if (printKernels)
{
D.Log(fn.func.kernelName);
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetFloat("_Alpha", alpha);
fn.shader.SetFloat("_Beta", beta);
fn.Dispatch();
return(O);
}
public override Tensor PRelu(Tensor X, Tensor S)
{
Assert.IsTrue((X.flatWidth == S.flatWidth) || (S.flatWidth == 1));
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.PRelu(X.shape, O.shape));
if (printKernels)
{
D.Log(fn.func.kernelName);
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensor("W", S.shape, Pin(S).buffer);
fn.Dispatch();
return(O);
}
public override Tensor Upsample2D(Tensor X, int[] size)
{
Assert.AreEqual(size.Length, 2);
var O = NewTensor(X.batch, X.height * size[1], X.width * size[0], X.channels);
var fn = BestKernel(ComputeKernelLibrary.Upsample2D(X.shape, O.shape));
if (printKernels)
{
D.Log($"{fn.func.kernelName}: {O.shape} = {X.shape} ^ size: {size[0]},{size[1]}");
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pool", size);
fn.Dispatch();
return(O);
}
protected override Tensor CopyAndReshape(Tensor X, TensorShape newShape)
{
var copyShape = X.shape;
Assert.AreEqual(copyShape.length, newShape.length);
// NOTE: "Copy" kernel copies tensor data while preserving the shape
// However here in CopyAndReshape we want to both copy and change the shape,
// To be able to piggyback "Copy" kernel we specify new shape when allocating destination tensor,
// but use shape identical to source when copying.
var O = NewTensor(newShape);
var fn = BestKernel(ComputeKernelLibrary.Copy(copyShape, copyShape));
fn.SetTensor("X", copyShape, Pin(X).buffer);
fn.SetTensor("O", copyShape, Pin(O).buffer);
fn.shader.SetInts("_Pad", new int[] { 0, 0, 0, 0 });
fn.Dispatch();
return(O);
}
public override Tensor ScaleBias(Tensor X, Tensor S, Tensor B)
{
Assert.AreEqual(X.channels, B.channels); Assert.AreEqual(X.channels, S.channels);
Assert.AreEqual(B.length, B.channels); Assert.AreEqual(S.length, S.channels);
var O = NewTensor(X.shape);
var fn = BestKernel(ComputeKernelLibrary.ScaleBias(X.shape, O.shape));
if (printKernels)
{
D.Log(fn.func.kernelName);
}
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensorDecl("W", S.shape, Pin(S).offset);
fn.SetTensorDecl("B", B.shape, Pin(B).offset);
Assert.AreEqual(Pin(S).buffer, Pin(B).buffer);
fn.SetTensorBuffer("WBK", Pin(S).buffer);
fn.Dispatch();
return(O);
}
protected virtual Tensor GlobalPool2D(string smallKernelName, string globalKernelName, Tensor X)
{
// downsample with pyramid approach
while (X.height * X.width >= 256)
{
var pool = new [] { 4, 4 };
var stride = pool;
var noPad = new[] { 0, 0, 0, 0 };
var lastLength = X.length;
X = Pool2D(smallKernelName, X, pool, stride, noPad);
Assert.IsTrue(X.length < lastLength);
}
var O = NewTensor(X.batch, 1, 1, X.channels);
var fn = BestKernel(ComputeKernelLibrary.GlobalPool2D(X.shape, O.shape, globalKernelName));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.Dispatch();
return(O);
}
public override Tensor Conv2DTrans(Tensor X, Tensor K, Tensor B, int[] stride, int[] pad, int[] outputAdjustment)
{
Assert.AreEqual(X.channels, K.kernelDepth);
Assert.AreEqual(K.kernelCount, B.flatWidth);
Assert.AreEqual(B.flatWidth, B.length);
Assert.AreEqual(stride.Length, 2);
Assert.AreEqual(pad.Length, 4);
var O = NewTensor(X.shape.ApplyKernelInverse(K.shape, stride, pad, outputAdjustment));
var fn = BestKernel(ComputeKernelLibrary.Conv2DTrans(X.shape, K.shape, O.shape));
if (printKernels)
{
D.Log($"{fn.func.kernelName}: {O.shape} = {X.shape} @ {K.shape} stride: {stride[0]},{stride[1]} pad:{pad[0]},{pad[1]}");
}
pad = new int[]
{
K.kernelWidth - pad[0] - 1, K.kernelHeight - pad[1] - 1,
K.kernelWidth - pad[2] - 1, K.kernelHeight - pad[3] - 1
};
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.SetTensorDecl("K", K.shape, Pin(K).offset);
fn.SetTensorDecl("B", B.shape, Pin(B).offset);
Assert.AreEqual(Pin(K).buffer, Pin(B).buffer);
fn.SetTensorBuffer("WBK", Pin(K).buffer);
fn.shader.SetInts("_Pad", pad);
fn.shader.SetInts("_Stride", stride);
fn.Dispatch();
return(O);
}
public override Tensor Concat(Tensor[] tensors, int axis)
{
var O = NewTensor(TensorExtensions.Concat(tensors.Select(t => t.shape).ToArray(), axis));
var offsets = new int[] { 0, 0, 0, 0 };
axis = O.shape.Axis(axis);
foreach (var X in tensors)
{
var fn = BestKernel(ComputeKernelLibrary.Copy(X.shape, O.shape));
fn.SetTensor("X", X.shape, Pin(X).buffer);
fn.SetTensor("O", O.shape, Pin(O).buffer);
fn.shader.SetInts("_Pad", offsets);
fn.Dispatch();
offsets[axis] += X.shape[axis];
}
return(O);
}
public virtual void PrepareModel(Model model, IDictionary <string, TensorShape> inputShapes)
{
var modelHash = CalcModelWithInputsHashCode(model, inputShapes);
if (modelHash == m_CachedModelHash)
{
return;
}
m_CachedModelHash = modelHash;
m_CompiledLayers.Clear();
IDictionary <string, TensorShape> shapesByName;
ModelAnalyzer.ListTemporaryTensorShapes(model, inputShapes, out shapesByName);
foreach (var l in model.layers)
{
if (m_CompiledLayers.ContainsKey(l))
{
continue; // already compiled
}
if (l.inputs.Length == 0)
{
continue; // don't need to compile layers without inputs, so far all of them are CPU only
}
var X = shapesByName[l.inputs[0]];
var O = shapesByName[l.name];
ComputeKernel kernel = new ComputeKernel();
if (l.type == Layer.Type.Dense)
{
var itemSize = 4; // @TODO: itemSizeInBytes == 2 | float16
kernel = BestKernel(
ComputeKernelLibrary.Dense(X, l.datasets[0].shape, O, itemSize >> 2));
}
else if (
l.type == Layer.Type.Conv2D)
{
Assert.IsNotNull(l.stride);
Assert.IsNotNull(l.pad);
kernel = BestKernel(
ComputeKernelLibrary.Conv2D(X, l.datasets[0].shape, O, l.stride, l.pad));
}
else if (
l.type == Layer.Type.DepthwiseConv2D)
{
kernel = BestKernel(
ComputeKernelLibrary.DepthwiseConv2D(X, l.datasets[0].shape, O));
}
else if (
l.type == Layer.Type.Conv2DTrans)
{
kernel = BestKernel(
ComputeKernelLibrary.Conv2DTrans(X, l.datasets[0].shape, O));
}
else if (
l.type == Layer.Type.Upsample2D)
{
kernel = BestKernel(
ComputeKernelLibrary.Upsample2D(X, O));
}
else if (
l.type == Layer.Type.MaxPool2D ||
l.type == Layer.Type.AvgPool2D)
{
var kernelName = l.type.ToString();
Assert.IsNotNull(l.pool);
Assert.IsNotNull(l.stride);
Assert.IsNotNull(l.pad);
var pad = X.AdjustPadToPool(l.pool, l.stride, l.pad);
if (pad[0] == 0 && pad[1] == 0 && pad[2] == 0 && pad[3] == 0)
{
kernelName += "_NoPads";
}
kernel = BestKernel(
ComputeKernelLibrary.Pool2D(X, O, kernelName));
}
// @TODO: reimplement GlobalPools, currently require different kernels for each pyramid step
//else if (
// l.type == Layer.Type.GlobalMaxPool2D ||
// l.type == Layer.Type.GlobalAvgPool2D)
//{
// var kernelName = l.type.ToString();
// kernel = BestKernel(
// ComputeKernelLibrary.GlobalPool2D(X, O, kernelName));
//}
else if (
l.type == Layer.Type.ScaleBias)
{
kernel = BestKernel(
ComputeKernelLibrary.ScaleBias(X, O));
}
// @TODO: reimplement Normalization, which became a multi-kernel operation after optimizations
//else if (
// l.type == Layer.Type.Normalization)
//{
// kernel = BestKernel(
// ComputeKernelLibrary.Normalization(X, O));
//}
else if (
l.type == Layer.Type.Add ||
l.type == Layer.Type.Sub ||
l.type == Layer.Type.Mul ||
l.type == Layer.Type.Div ||
l.type == Layer.Type.Pow ||
l.type == Layer.Type.Min ||
l.type == Layer.Type.Max
// || l.type == Layer.Type.Mean @TODO: implement BroadcastMean
)
{
var kernelName = "Broadcast" + l.type;
kernel = BestKernel(
ComputeKernelLibrary.Broadcast(X, O, kernelName));
}
// @TODO: implement Concat, currently might require different kernel for each tensor
//else if (
// l.type == Layer.Type.Concat) {}
// Activations
else if (l.type == Layer.Type.Activation)
{
if (l.activation == Layer.Activation.Softmax)
{
kernel = BestKernel(
ComputeKernelLibrary.Softmax(X, O));
}
else if (l.activation == Layer.Activation.LogSoftmax)
{
kernel = BestKernel(
ComputeKernelLibrary.LogSoftmax(X, O));
}
else if (l.activation == Layer.Activation.PRelu)
{
kernel = BestKernel(
ComputeKernelLibrary.PRelu(X, O));
}
else if (l.activation != Layer.Activation.None)
{
var kernelName = l.activation.ToString();
kernel = BestKernel(
ComputeKernelLibrary.Activation(X, O, kernelName));
}
}
m_CompiledLayers.Add(l, new CompiledLayer {
kernel = kernel, shape = O
});
}
}
