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Diffstat (limited to 'src/backends/reference/workloads/BatchNormImpl.cpp')
-rw-r--r-- | src/backends/reference/workloads/BatchNormImpl.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/backends/reference/workloads/BatchNormImpl.cpp b/src/backends/reference/workloads/BatchNormImpl.cpp new file mode 100644 index 0000000000..36e96d3fec --- /dev/null +++ b/src/backends/reference/workloads/BatchNormImpl.cpp @@ -0,0 +1,82 @@ +// +// Copyright © 2017 Arm Ltd. All rights reserved. +// SPDX-License-Identifier: MIT +// + +#include "BatchNormImpl.hpp" +#include "RefWorkloadUtils.hpp" + +#include <armnn/Tensor.hpp> + +#include <DataLayoutIndexed.hpp> + +#include <cmath> + +namespace armnn +{ + +void BatchNormImpl(const BatchNormalizationQueueDescriptor& data, + Decoder<float>& meanDecoder, + Decoder<float>& varianceDecoder, + Decoder<float>& betaDecoder, + Decoder<float>& gammaDecoder, + Decoder<float>& inputDecoder, + Encoder<float>& outputEncoder) +{ + const TensorInfo& inputInfo = GetTensorInfo(data.m_Inputs[0]); + const TensorShape inputShape = inputInfo.GetShape(); + + armnnUtils::DataLayoutIndexed dataLayout(data.m_Parameters.m_DataLayout); + + unsigned int inputBatches = inputShape[0]; + unsigned int inputHeight = inputShape[dataLayout.GetHeightIndex()]; + unsigned int inputWidth = inputShape[dataLayout.GetWidthIndex()]; + unsigned int inputChannels = inputShape[dataLayout.GetChannelsIndex()]; + + for (unsigned int c = 0; c < inputChannels; c++) + { + meanDecoder[c]; + varianceDecoder[c]; + betaDecoder[c]; + gammaDecoder[c]; + float mean = meanDecoder.Get(); + float var = varianceDecoder.Get(); + float beta = betaDecoder.Get(); + float gamma = gammaDecoder.Get(); + + float mult = gamma / sqrtf(var + data.m_Parameters.m_Eps); + float add = beta - mult * mean; + + for (unsigned int n = 0; n < inputBatches; n++) + { + for (unsigned int h = 0; h < inputHeight; h++) + { + for (unsigned int w = 0; w < inputWidth; w++) + { + unsigned int index = 0; + + if (dataLayout == DataLayout::NHWC) + { + index = n * inputHeight * inputWidth * inputChannels + + h * inputWidth * inputChannels + + w * inputChannels + + c; + } + else // dataLayout == DataLayout::NCHW + { + index = n * inputHeight * inputWidth * inputChannels + + c * inputHeight * inputWidth + + h * inputWidth + + w; + } + + inputDecoder[index]; + outputEncoder[index]; + outputEncoder.Set(mult * inputDecoder.Get() + add); + } + } + } + } +} + +} // namespace armnn |