AthEnvironmentSvc.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration.
 */
 
 
#ifndef ATHENASERVICES_ATHENVIRONMENTSVC_H
#define ATHENASERVICES_ATHENVIRONMENTSVC_H
 
 
#include "AthenaBaseComps/AthService.h"
 

class AthEnvironmentSvc : public AthService
{
public:
  using AthService::AthService;

  virtual StatusCode initialize() override;
 
 
private:
  IntegerProperty m_eigenL1CacheSize
  { this, "EigenL1CacheSize", 32768, "L1 cache size to declare to Eigen, to allow for for reproducibility across machines.  Set all cache sizes to 0 to use instead the actual hardware cache sizes." };
 
  IntegerProperty m_eigenL2CacheSize
  { this, "EigenL2CacheSize", 1048576, "L2 cache size to declare to Eigen, to allow for for reproducibility across machines.  Set all cache sizes to 0 to use instead the actual hardware cache sizes." };
 
  IntegerProperty m_eigenL3CacheSize
  { this, "EigenL3CacheSize", 33554432, "L3 cache size to declare to Eigen, to allow for for reproducibility across machines.  Set all cache sizes to 0 to use instead the actual hardware cache sizes." };
};
 
 
#endif // not ATHENASERVICES_ATHENVIRONMENTSVC_H