Par04TorchInference.cc

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#ifdef USE_INFERENCE_TORCH
#include "Par04TorchInference.hh"
#include <algorithm>                           // for copy, max
#include <cassert>                             // for assert
#include <cstddef>                             // for size_t
#include <cstdint>                             // for int64_t
#include <utility>                             // for move
#include "Par04InferenceInterface.hh"          // for Par04InferenceInterface
#include <torch/torch.h>
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
Par04TorchInference::Par04TorchInference(G4String modelPath)
  : Par04InferenceInterface()
{
  fModule = torch::jit::load( modelPath );
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void Par04TorchInference::RunInference(std::vector<float> aGenVector,
                                       std::vector<G4double>& aEnergies,
                                       int aSize)
{
  // latentSize : size of the latent space
  // 4 is the size of the condition vector
  int latentSize = aGenVector.size() - 4;
  // split into latent and condition vectors
  std::vector<float> latent;
  for ( int i=0;i<latentSize;i++) {
    latent.push_back(aGenVector[i]);
  }
  std::vector<float> energy;
  energy.push_back(aGenVector[latentSize+1]);
  std::vector<float> angle;
  energy.push_back(aGenVector[latentSize+2]);
  std::vector<float> geo;
  for ( int i=latentSize+2;i<latentSize+4;i++) {
    geo.push_back(aGenVector[i]);
  }
 
  // convert vectors to tensors
  torch::Tensor latentVector = torch::tensor(latent);
  torch::Tensor eTensor = torch::tensor(energy);
  torch::Tensor angleTensor = torch::tensor(angle);
  torch::Tensor geoTensor = torch::tensor(geo);
 
  std::vector<torch::jit::IValue> genInput;
 
  genInput.push_back( latentVector );
  genInput.push_back( eTensor );
  genInput.push_back( angleTensor );
  genInput.push_back( geoTensor );
 
  at::Tensor  outTensor = fModule.forward( genInput).toTensor().contiguous();
 
  std::vector<G4double> output( outTensor.data_ptr<float>(),
                                outTensor.data_ptr<float>() + outTensor.numel() );
 
  aEnergies.assign(aSize, 0);
  for(int i = 0; i < aSize; i++) {
    aEnergies[i] = output[i];
  }
}
 
#endif