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| author | Keith Davis <keith.davis@arm.com> | 2019-11-04 08:58:33 +0000 |
|---|---|---|
| committer | Keith Davis <keith.davis@arm.com> | 2019-11-04 16:46:35 +0000 |
| commit | 5236e1d6bcff6ebec7ec10d7d416cc6ead5482dd (patch) | |
| tree | 4152c5fcd6b9c11848a02dfa4ff8705a2cfae0a5 /src/armnnUtils | |
| parent | f71079328ae72a65c91e410b2bd35eabb67cb6d1 (diff) | |
| download | armnn-5236e1d6bcff6ebec7ec10d7d416cc6ead5482dd.tar.gz | |
IVGCVSW-3835 Create Encoder and Decoder for QSymm8PerAxis
* Add QuantizedSymm8PerAxis to armnn DataType (types.hpp) and
* Add Quantize and Dequantize template for int8 in TypeUtils to be able to compute QSymm8 of the weight
* Create PerAxisIterator for per-axis quantization
* Create QSymm8PerAxisDecoder
* Create QSymm8PerAxisEncoder
Signed-off-by: Keith Davis <keith.davis@arm.com>
Change-Id: Ibcfe0288a197b7ee50b543bdbd77b7edb8a547c2
Diffstat (limited to 'src/armnnUtils')
| -rw-r--r-- | src/armnnUtils/TensorUtils.hpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/armnnUtils/TensorUtils.hpp b/src/armnnUtils/TensorUtils.hpp index 2b1f6a24f3..32af179bdc 100644 --- a/src/armnnUtils/TensorUtils.hpp +++ b/src/armnnUtils/TensorUtils.hpp @@ -7,6 +7,8 @@ #include <armnn/TypesUtils.hpp> +#include <boost/assert.hpp> + namespace armnnUtils { armnn::TensorShape GetTensorShape(unsigned int numberOfBatches, @@ -32,4 +34,32 @@ unsigned int GetNumElementsBetween(const armnn::TensorShape& shape, unsigned int GetUnsignedAxis(const unsigned int inputDimension, const int axis); +inline unsigned int GetNumElementsAfter(const armnn::TensorShape& shape, + unsigned int axis) +{ + unsigned int numDim = shape.GetNumDimensions(); + BOOST_ASSERT(0 >= axis); + BOOST_ASSERT(axis < numDim - 1); + unsigned int count = 1; + for (unsigned int i = axis; i < numDim; i++) + { + count *= shape[i]; + } + return count; +} + +inline std::pair<unsigned int, std::vector<float>> GetPerAxisParams(const armnn::TensorInfo& info) +{ + const std::vector<float>& scales = info.GetQuantizationScales(); + armnn::Optional<unsigned int> quantizationDim = info.GetQuantizationDim(); + if (scales.size() < 1 || !quantizationDim.has_value()) + { + throw armnn::InvalidArgumentException( + "We currently support only per-axis symmetric quantization for QuantizedSymm8."); + } + unsigned int axisFactor = GetNumElementsAfter(info.GetShape(), quantizationDim.value()); + + return {axisFactor, scales}; +} + } // namespace armnnUtils |