public void Reset()
{
if (!doReset_ || Index == 0L || Context.Type != ContextType.Gpu)
{
return;
}
Index = 0L;
ShuffleIndices();
Context.Copy(IndicesTensor, Indices.AsTensor());
var stream = Context.ToGpuContext().Stream;
var srcData = DataTensor == DataTensor1 ? DataTensor1.Buffer.Ptr : DataTensor2.Buffer.Ptr;
var dstData = DataTensor == DataTensor1 ? DataTensor2.Buffer.Ptr : DataTensor1.Buffer.Ptr;
var srcLabels = LabelsTensor == LabelsTensor1 ? LabelsTensor1.Buffer.Ptr : LabelsTensor2.Buffer.Ptr;
var dstLabels = LabelsTensor == LabelsTensor1 ? LabelsTensor2.Buffer.Ptr : LabelsTensor1.Buffer.Ptr;
var idx = IndicesTensor.Buffer.Ptr;
DeviceFor.For(stream, 0, Rows, i => {
var j = idx[i];
var srcDataOffset = srcData + i * cols_;
var dstDataOffset = dstData + j * cols_;
for (var k = 0; k < cols_; ++k)
{
dstDataOffset[k] = srcDataOffset[k];
}
var srcLabelsOffset = srcLabels + i * outputs_;
var dstLabelsOffset = dstLabels + j * outputs_;
for (var k = 0; k < outputs_; ++k)
{
dstLabelsOffset[k] = srcLabelsOffset[k];
}
});
DataTensor = DataTensor == DataTensor1 ? DataTensor2 : DataTensor1;
LabelsTensor = LabelsTensor == LabelsTensor1 ? LabelsTensor2 : LabelsTensor1;
}