DKSFFT.cpp 4.02 KB
Newer Older
Uldis Locans's avatar
Uldis Locans committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
#include "DKSFFT.h"

DKSFFT::DKSFFT() {
  dksfft = nullptr;
}

~DKSFFT::DKSFFT() {
  delete dksfft;
}

/* setup fft plans to reuse if multiple ffts of same size are needed */
int DKSFFT::setupFFT(int ndim, int N[3]) {

  if (apiCuda()) {
    return dksfft->setupFFT(ndim, N);
  } else if (apiOpenCL()) {
    int ierr1 = dksfft->setupFFT(ndim, N);
    int ierr2 = dksfft->setupFFTRC(ndim, N);
    int ierr3 = dksfft->setupFFTCR(ndim, N);
    if (ierr1 != DKS_SUCCESS || ierr2 != DKS_SUCCESS || ierr3 != DKS_SUCCESS)
      return DKS_ERROR;

    return DKS_SUCCESS;
  } else if (apiOpenMP()) {
    //micbase.mic_setupFFT(ndim, N);
    //BENI: setting up RC and CR transformations on MIC
    int ierr1 = dksfft->setupFFTRC(ndim, N, 1.);
    int ierr2 = dksfft->setupFFTCR(ndim, N, 1./(N[0]*N[1]*N[2]));
    if (ierr1 != DKS_SUCCESS)
      return ierr1;
    if (ierr2 != DKS_SUCCESS)
      return ierr2;
    return DKS_SUCCESS;
  }

  return DKS_ERROR;

}
//BENI:
int DKSFFT::setupFFTRC(int ndim, int N[3], double scale) {

  if (apiCuda())
    return dksfft->setupFFT(ndim, N);
  if (apiOpenCL())
    return dksfft->setupFFTRC(ndim, N);
  else if (apiOpenMP())
    return dksfft->setupFFTRC(ndim, N, scale);

  return DKS_ERROR;

}

//BENI:
int DKSFFT::setupFFTCR(int ndim, int N[3], double scale) {

  if (apiCuda())
    return dksfft->setupFFT(ndim, N);
  if (apiOpenCL())
    return dksfft->setupFFTCR(ndim, N);
  else if (apiOpenMP())
    return dksfft->setupFFTCR(ndim, N, scale);

  return DKS_ERROR;

}

/* call OpenCL FFT function for selected platform */
int DKSFFT::callFFT(void * data_ptr, int ndim, int dimsize[3], int streamId) {

  if (apiOpenCL() || apiOpenMP()) 
    return dksfft->executeFFT(data_ptr, ndim, dimsize);
  else if (apiCuda())
    return dksfft->executeFFT(data_ptr, ndim, dimsize, streamId);

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}

/* call OpenCL IFFT function for selected platform */
int DKSFFT::callIFFT(void * data_ptr, int ndim, int dimsize[3], int streamId) {
  if (apiOpenCL() || apiOpenMP())
      return dksfft->executeIFFT(data_ptr, ndim, dimsize);
  else if (apiCuda()) 
    return dksfft->executeIFFT(data_ptr, ndim, dimsize, streamId);

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}

/* call normalize FFT function for selected platform */
int DKSFFT::callNormalizeFFT(void * data_ptr, int ndim, int dimsize[3], int streamId) {

  if (apiOpenCL()) {
    if ( loadOpenCLKernel("OpenCL/OpenCLKernels/OpenCLFFT.cl") == DKS_SUCCESS )
      return dksfft->normalizeFFT(data_ptr, ndim, dimsize);
    else 
      return DKS_ERROR;
  } else if (apiCuda()) {
    return dksfft->normalizeFFT(data_ptr, ndim, dimsize, streamId);
  } else if (apiOpenMP()) {
    return dksfft->normalizeFFT(data_ptr, ndim, dimsize);
  }

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}

/* call real to complex FFT */
int DKSFFT::callR2CFFT(void * real_ptr, void * comp_ptr, int ndim, int dimsize[3], int streamId) {

  if (apiCuda())
    return dksfft->executeRCFFT(real_ptr, comp_ptr, ndim, dimsize, streamId);
  else if (apiOpenCL() || apiOpenMP())
    return dksfft->executeRCFFT(real_ptr, comp_ptr, ndim, dimsize);

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}

/* call complex to real FFT */
int DKSFFT::callC2RFFT(void * real_ptr, void * comp_ptr, int ndim, int dimsize[3], int streamId) {
  if (apiCuda())
    return dksfft->executeCRFFT(real_ptr, comp_ptr, ndim, dimsize, streamId);
  else if (apiOpenCL() || apiOpenMP())
    return dksfft->executeCRFFT(real_ptr, comp_ptr, ndim, dimsize);

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}

/* normalize complex to real iFFT */
int DKSFFT::callNormalizeC2RFFT(void * real_ptr, int ndim, int dimsize[3], int streamId) {
  if (apiCuda())
    return dksfft->normalizeCRFFT(real_ptr, ndim, dimsize, streamId);
  else if (apiOpenCL())
    return DKS_ERROR;
  else if (apiOpenMP())
    return DKS_ERROR;

  DEBUG_MSG("No implementation for selected platform");
  return DKS_ERROR;
}