RooBatchCompute::RooBatchComputeInterface Class Reference

The interface which should be implemented to provide optimised computation functions for implementations of RooAbsReal::doEval().

The class RooBatchComputeInterface provides the mechanism for external modules (like RooFit) to call functions from the library. The power lies in the virtual functions that can resolve to different implementations for the functionality; for example, calling a function through dispatchCuda will resolve to efficient CUDA implementations.

This interface contains the signatures of the compute functions of every PDF that has an optimised implementation available. These are the functions that perform the actual computations in batches.

Several implementations of this interface may be provided, e.g. SSE, AVX, AVX2 etc. At run time, the fastest implementation of this interface is selected, and using a virtual call, the computation is dispatched to the best backend.

See also

RooBatchCompute::dispatch, RooBatchComputeClass, RF_ARCH

Definition at line 139 of file RooBatchCompute.h.

Public Member Functions
virtual	~RooBatchComputeInterface ()=default
virtual Architecture	architecture () const =0
virtual std::string	architectureName () const =0
virtual void	compute (Config const &cfg, Computer, std::span< double > output, VarSpan, ArgSpan)=0
virtual ReduceNLLOutput	reduceNLL (Config const &cfg, std::span< const double > probas, std::span< const double > weights, std::span< const double > offsetProbas)=0
virtual double	reduceSum (Config const &cfg, InputArr input, size_t n)=0

#include </home/sftnight/build/workspace/root-makedoc-master/rootspi/rdoc/src/master/roofit/batchcompute/res/RooBatchCompute.h>

Inheritance diagram for RooBatchCompute::RooBatchComputeInterface:

Constructor & Destructor Documentation

~RooBatchComputeInterface()

virtual RooBatchCompute::RooBatchComputeInterface::~RooBatchComputeInterface ( )

virtualdefault

Member Function Documentation

architecture()

virtual Architecture RooBatchCompute::RooBatchComputeInterface::architecture ( ) const

pure virtual

Implemented in RooBatchCompute::RF_ARCH::RooBatchComputeClass, and RooBatchCompute::RF_ARCH::RooBatchComputeClass.

architectureName()

virtual std::string RooBatchCompute::RooBatchComputeInterface::architectureName ( ) const

pure virtual

Implemented in RooBatchCompute::RF_ARCH::RooBatchComputeClass, and RooBatchCompute::RF_ARCH::RooBatchComputeClass.

compute()

virtual void RooBatchCompute::RooBatchComputeInterface::compute ( Config const &  cfg, Computer  , std::span< double >  output, VarSpan  , ArgSpan    )

pure virtual

Implemented in RooBatchCompute::RF_ARCH::RooBatchComputeClass, and RooBatchCompute::RF_ARCH::RooBatchComputeClass.

reduceNLL()

virtual ReduceNLLOutput RooBatchCompute::RooBatchComputeInterface::reduceNLL ( Config const &  cfg, std::span< const double >  probas, std::span< const double >  weights, std::span< const double >  offsetProbas  )

pure virtual

Implemented in RooBatchCompute::RF_ARCH::RooBatchComputeClass, and RooBatchCompute::RF_ARCH::RooBatchComputeClass.

reduceSum()

virtual double RooBatchCompute::RooBatchComputeInterface::reduceSum ( Config const &  cfg, InputArr  input, size_t  n  )

pure virtual

Implemented in RooBatchCompute::RF_ARCH::RooBatchComputeClass, and RooBatchCompute::RF_ARCH::RooBatchComputeClass.

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

• roofit/batchcompute/res/RooBatchCompute.h