src/gromacs/ewald/pme_coordinate_receiver_gpu.h

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  35 /*! \libinternal \file
  36  * \brief Declaration of class which receives coordinates to GPU memory on PME task
  37  *
  38  * \author Alan Gray <alang@nvidia.com>
  39  * \inlibraryapi
  40  * \ingroup module_ewald
  41  */
  42 #ifndef GMX_PMECOORDINATERECEIVERGPU_H
  43 #define GMX_PMECOORDINATERECEIVERGPU_H
  44
  45 #include "gromacs/gpu_utils/devicebuffer_datatype.h"
  46 #include "gromacs/math/vectypes.h"
  47 #include "gromacs/utility/classhelpers.h"
  48 #include "gromacs/utility/gmxmpi.h"
  49
  50 class DeviceStream;
  51 struct PpRanks;
  52
  53 namespace gmx
  54 {
  55
  56 template<typename>
  57 class ArrayRef;
  58
  59 class PmeCoordinateReceiverGpu
  60 {
  61
  62 public:
  63     /*! \brief Creates PME GPU coordinate receiver object
  64      * \param[in] pmeStream       CUDA stream used for PME computations
  65      * \param[in] comm            Communicator used for simulation
  66      * \param[in] ppRanks         List of PP ranks
  67      */
  68     PmeCoordinateReceiverGpu(const DeviceStream& pmeStream, MPI_Comm comm, gmx::ArrayRef<PpRanks> ppRanks);
  69     ~PmeCoordinateReceiverGpu();
  70
  71     /*! \brief
  72      * send coordinates buffer address to PP rank
  73      * \param[in] d_x   coordinates buffer in GPU memory
  74      */
  75     void sendCoordinateBufferAddressToPpRanks(DeviceBuffer<RVec> d_x);
  76
  77
  78     /*! \brief
  79      * launch receive of coordinate data from PP rank
  80      * \param[in] ppRank  PP rank to send data
  81      */
  82     void launchReceiveCoordinatesFromPpCudaDirect(int ppRank);
  83
  84     /*! \brief
  85      * enqueue wait for coordinate data from PP ranks
  86      */
  87     void enqueueWaitReceiveCoordinatesFromPpCudaDirect();
  88
  89 private:
  90     class Impl;
  91     gmx::PrivateImplPointer<Impl> impl_;
  92 };
  93
  94 } // namespace gmx
  95
  96 #endif