nvinfer1::IInt8LegacyCalibrator Class Reference

#include <NvInfer.h>

Inheritance diagram for nvinfer1::IInt8LegacyCalibrator:

Public Member Functions
CalibrationAlgoType	getAlgorithm () noexcept override
virtual double	getQuantile () const noexcept=0
	The quantile (between 0 and 1) that will be used to select the region maximum when the quantile method is in use. More...
virtual double	getRegressionCutoff () const noexcept=0
	The fraction (between 0 and 1) of the maximum used to define the regression cutoff when using regression to determine the region maximum. More...
virtual void const *	readHistogramCache (std::size_t &length) noexcept=0
	Load a histogram. More...
virtual void	writeHistogramCache (void const *ptr, std::size_t length) noexcept=0
	Save a histogram cache. More...
virtual	~IInt8LegacyCalibrator () noexcept=default
Public Member Functions inherited from nvinfer1::IInt8Calibrator
virtual int32_t	getBatchSize () const noexcept=0
	Get the batch size used for calibration batches. More...
virtual bool	getBatch (void *bindings[], char const *names[], int32_t nbBindings) noexcept=0
	Get a batch of input for calibration. More...
virtual void const *	readCalibrationCache (std::size_t &length) noexcept=0
	Load a calibration cache. More...
virtual void	writeCalibrationCache (void const *ptr, std::size_t length) noexcept=0
	Save a calibration cache. More...
virtual	~IInt8Calibrator () noexcept=default

Detailed Description

Legacy calibrator left for backward compatibility with TensorRT 2.0. This calibrator requires user parameterization, and is provided as a fallback option if the other calibrators yield poor results.

Constructor & Destructor Documentation

~IInt8LegacyCalibrator()

virtual nvinfer1::IInt8LegacyCalibrator::~IInt8LegacyCalibrator ( )

virtualdefaultnoexcept

Member Function Documentation

getAlgorithm()

CalibrationAlgoType nvinfer1::IInt8LegacyCalibrator::getAlgorithm ( )

inlineoverridevirtualnoexcept

Signal that this is the legacy calibrator.

Implements nvinfer1::IInt8Calibrator.

getQuantile()

virtual double nvinfer1::IInt8LegacyCalibrator::getQuantile ( ) const

pure virtualnoexcept

The quantile (between 0 and 1) that will be used to select the region maximum when the quantile method is in use.

See the user guide for more details on how the quantile is used.

getRegressionCutoff()

virtual double nvinfer1::IInt8LegacyCalibrator::getRegressionCutoff ( ) const

pure virtualnoexcept

The fraction (between 0 and 1) of the maximum used to define the regression cutoff when using regression to determine the region maximum.

See the user guide for more details on how the regression cutoff is used

readHistogramCache()

virtual void const * nvinfer1::IInt8LegacyCalibrator::readHistogramCache ( std::size_t &  length )

pure virtualnoexcept

Load a histogram.

Histogram generation is potentially expensive, so it can be useful to generate the histograms once, then use them when exploring the space of calibrations. The histograms should be regenerated if the network structure changes, or the input data set changes, and it is the responsibility of the application to ensure this.

Parameters

length

The length of the cached data, that should be set by the called function. If there is no data, this should be zero.

Returns

A pointer to the cache, or nullptr if there is no data.

writeHistogramCache()

virtual void nvinfer1::IInt8LegacyCalibrator::writeHistogramCache ( void const *  ptr, std::size_t  length  )

pure virtualnoexcept

Save a histogram cache.

Parameters

ptr	A pointer to the data to cache.
length	The length in bytes of the data to cache.

See also

readHistogramCache()

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The documentation for this class was generated from the following file:

• NvInfer.h