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37 * \brief Declaration of class which receives coordinates to GPU memory on PME task
39 * \author Alan Gray <alang@nvidia.com>
41 * \ingroup module_ewald
43 #ifndef GMX_PMECOORDINATERECEIVERGPU_IMPL_H
44 #define GMX_PMECOORDINATERECEIVERGPU_IMPL_H
46 #include "gromacs/ewald/pme_coordinate_receiver_gpu.h"
47 #include "gromacs/gpu_utils/gpueventsynchronizer.cuh"
52 /*! \internal \brief Class with interfaces and data for CUDA version of PME coordinate receiving functionality */
54 class PmeCoordinateReceiverGpu::Impl
58 /*! \brief Creates PME GPU coordinate receiver object
59 * \param[in] pmeStream CUDA stream used for PME computations
60 * \param[in] comm Communicator used for simulation
61 * \param[in] ppRanks List of PP ranks
63 Impl(void* pmeStream, MPI_Comm comm, gmx::ArrayRef<PpRanks> ppRanks);
67 * send coordinates buffer address to PP rank
68 * \param[in] d_x coordinates buffer in GPU memory
70 void sendCoordinateBufferAddressToPpRanks(const DeviceBuffer<float> d_x);
73 * launch receive of coordinate data from PP rank
74 * \param[in] ppRank PP rank to send data
76 void launchReceiveCoordinatesFromPpCudaDirect(int ppRank);
79 * enqueue wait for coordinate data from PP ranks
81 void enqueueWaitReceiveCoordinatesFromPpCudaDirect();
84 //! CUDA stream for PME operations
85 cudaStream_t pmeStream_ = nullptr;
86 //! communicator for simulation
89 gmx::ArrayRef<PpRanks> ppRanks_;
90 //! vector of MPI requests
91 std::vector<MPI_Request> request_;
92 //! vector of synchronization events to receive from PP tasks
93 std::vector<GpuEventSynchronizer*> ppSync_;
94 //! counter of messages to receive