src/gromacs/ewald/pme-gpu-3dfft.h

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  35
  36 /*! \internal \file
  37  *  \brief Declares the 3D FFT class for PME.
  38  *
  39  *  \author Aleksei Iupinov <a.yupinov@gmail.com>
  40  *  \ingroup module_ewald
  41  */
  42
  43 #ifndef GMX_EWALD_PME_GPU_3DFFT_H
  44 #define GMX_EWALD_PME_GPU_3DFFT_H
  45
  46 #include "config.h"
  47
  48 #include <vector>
  49
  50 #if GMX_GPU == GMX_GPU_CUDA
  51 #include <cufft.h>
  52
  53 #include "gromacs/gpu_utils/gputraits.cuh"
  54 #elif GMX_GPU == GMX_GPU_OPENCL
  55 #include <clFFT.h>
  56
  57 #include "gromacs/gpu_utils/gmxopencl.h"
  58 #include "gromacs/gpu_utils/gputraits_ocl.h"
  59 #endif
  60
  61 #include "gromacs/fft/fft.h"        // for the enum gmx_fft_direction
  62
  63 struct PmeGpu;
  64
  65 /*! \internal \brief
  66  * A 3D FFT class for performing R2C/C2R transforms
  67  * \todo Make this class actually parallel over multiple GPUs
  68  */
  69 class GpuParallel3dFft
  70 {
  71     public:
  72         /*! \brief
  73          * Constructs CUDA/OpenCL FFT plans for performing 3D FFT on a PME grid.
  74          *
  75          * \param[in] pmeGpu                  The PME GPU structure.
  76          */
  77         GpuParallel3dFft(const PmeGpu *pmeGpu);
  78         /*! \brief Destroys the FFT plans. */
  79         ~GpuParallel3dFft();
  80         /*! \brief Performs the FFT transform in given direction
  81          *
  82          * \param[in]  dir           FFT transform direction specifier
  83          * \param[out] timingEvent   pointer to the timing event where timing data is recorded
  84          */
  85         void perform3dFft(gmx_fft_direction  dir,
  86                           CommandEvent      *timingEvent);
  87
  88     private:
  89 #if GMX_GPU == GMX_GPU_CUDA
  90         cufftHandle   planR2C_;
  91         cufftHandle   planC2R_;
  92         cufftReal    *realGrid_;
  93         cufftComplex *complexGrid_;
  94 #elif GMX_GPU == GMX_GPU_OPENCL
  95         clfftPlanHandle planR2C_;
  96         clfftPlanHandle               planC2R_;
  97         std::vector<cl_command_queue> commandStreams_;
  98         cl_mem realGrid_;
  99         cl_mem complexGrid_;
 100 #endif
 101
 102 };
 103
 104 #endif