BrookIntegrateLangevinStepKernel.h 4.33 KB
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#ifndef OPENMM_BROOK_INTEGRATE_LANGEVIN_STEP_KERNEL_H_
#define OPENMM_BROOK_INTEGRATE_LANGEVIN_STEP_KERNEL_H_
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/* -------------------------------------------------------------------------- *
 *                                   OpenMM                                   *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit originating from   *
 * Simbios, the NIH National Center for Physics-Based Simulation of           *
 * Biological Structures at Stanford, funded under the NIH Roadmap for        *
 * Medical Research, grant U54 GM072970. See https://simtk.org.               *
 *                                                                            *
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 * Portions copyright ( c ) 2008 Stanford University and the Authors.           *
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 * Authors: Peter Eastman, Mark Friedrichs                                    *
 * Contributors:                                                              *
 *                                                                            *
 * Permission is hereby granted, free of charge, to any person obtaining a    *
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 * copy of this software and associated documentation files ( the "Software" ), *
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 * to deal in the Software without restriction, including without limitation  *
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
 * and/or sell copies of the Software, and to permit persons to whom the      *
 * Software is furnished to do so, subject to the following conditions:       *
 *                                                                            *
 * The above copyright notice and this permission notice shall be included in *
 * all copies or substantial portions of the Software.                        *
 *                                                                            *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
 * THE AUTHORS, CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,    *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR      *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE  *
 * USE OR OTHER DEALINGS IN THE SOFTWARE.                                     *
 * -------------------------------------------------------------------------- */

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#include "kernels.h"
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#include "OpenMMBrookInterface.h"
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#include "BrookLangevinDynamics.h"
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#include "BrookShakeAlgorithm.h"
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#include "BrookRandomNumberGenerator.h"
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namespace OpenMM {

/**
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 * Performs Langevin integration step
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 */

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class BrookIntegrateLangevinStepKernel : public IntegrateLangevinStepKernel {
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   public:
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      // return values

      static const int DefaultReturnValue = 0;
      static const int ErrorReturnValue   = -1; 

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      /**
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       * BrookIntegrateLangevinStepKernel constructor
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       * 
       * @param name        name of the stream to create
       * @param platform    platform
       *
       */
  
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      BrookIntegrateLangevinStepKernel( std::string name, const Platform& platform, OpenMMBrookInterface& openMMBrookInterface, System& system );
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      /**
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       * BrookIntegrateLangevinStepKernel destructor
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       * 
       */
  
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      ~BrookIntegrateLangevinStepKernel();
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      /** 
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       * Initialize the kernel, setting up all parameters related to integrator.
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       * 
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       * @param system             System reference
       * @param integrator         LangevinIntegrator reference
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       */
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      void initialize( const System& system, const LangevinIntegrator& integrator );

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      /** 
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       * Execute kernel
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       * 
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       * @param context            OpenMMContextImpl reference
       * @param integrator         LangevinIntegrator reference
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       *
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       */

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      void execute( OpenMMContextImpl& context, const LangevinIntegrator& integrator );
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   protected:
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      BrookLangevinDynamics*        _brookLangevinDynamics;
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      BrookShakeAlgorithm*          _brookShakeAlgorithm;
      BrookRandomNumberGenerator*   _brookRandomNumberGenerator;
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      // interface

      OpenMMBrookInterface& _openMMBrookInterface;

      // System reference

      System& _system;

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};

} // namespace OpenMM

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#endif /* OPENMM_BROOK_INTEGRATE_LANGEVIN_STEP_KERNEL_H_ */