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Merge pull request #2449 from hedaoyuan/ImageExpandFunction
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Add ImageExpandFunction.
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@hedaoyuan
hedaoyuan authored Jul 25, 2017
2 parents da4ce23 + ff8262e commit 1ab2e44
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Showing 17 changed files with 1,231 additions and 956 deletions.
67 changes: 0 additions & 67 deletions paddle/cuda/include/hl_cnn.h
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Original file line number Diff line number Diff line change
Expand Up @@ -17,73 +17,6 @@ limitations under the License. */

#include "hl_base.h"

/**
* @brief Shrink column to feature.
*
* @param[in] dataCol expand data.
* @param[in] channels number of channel.
* @param[in] height image height.
* @param[in] width image width.
* @param[in] blockH filter height.
* @param[in] blockW filter width.
* @param[in] strideH stride height.
* @param[in] strideW stride width.
* @param[in] paddingH padding height.
* @param[in] paddingW padding width.
* @param[in] outputH output height.
* @param[in] outputW output width.
* @param[out] dataIm output image data.
* @param[in] alpha
* @param[in] beta
*/
extern void hl_shrink_col2feature(const real* dataCol,
size_t channels,
size_t height,
size_t width,
size_t blockH,
size_t blockW,
size_t strideH,
size_t strideW,
size_t paddingH,
size_t paddingW,
size_t outputH,
size_t outputW,
real* dataIm,
real alpha = 1.0f,
real beta = 0.0f);

/**
* @brief Expand feature to column.
*
* @param[in] dataIm input image data.
* @param[in] channels number of channel.
* @param[in] height image height.
* @param[in] width image width.
* @param[in] blockH filter height.
* @param[in] blockW filter width.
* @param[in] strideH stride height.
* @param[in] strideW stride width.
* @param[in] paddingH padding height.
* @param[in] paddingW padding width.
* @param[in] outputH output height.
* @param[in] outputW output width.
* @param[out] dataCol expand data.
*
*/
extern void hl_expand_feature2col(const real* dataIm,
size_t channels,
size_t height,
size_t width,
size_t blockH,
size_t blockW,
size_t strideH,
size_t strideW,
size_t paddingH,
size_t paddingW,
size_t outputH,
size_t outputW,
real* dataCol);

/**
* @brief Maximum pool forward.
*
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30 changes: 0 additions & 30 deletions paddle/cuda/include/stub/hl_cnn_stub.h
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Expand Up @@ -17,36 +17,6 @@ limitations under the License. */

#include "hl_cnn.h"

inline void hl_shrink_col2feature(const real* dataCol,
size_t channels,
size_t height,
size_t width,
size_t blockH,
size_t blockW,
size_t strideH,
size_t strideW,
size_t paddingH,
size_t paddingW,
size_t outputH,
size_t outputW,
real* dataIm,
real alpha,
real beta) {}

inline void hl_expand_feature2col(const real* dataIm,
size_t channels,
size_t height,
size_t width,
size_t blockH,
size_t blockW,
size_t strideH,
size_t strideW,
size_t paddingH,
size_t paddingW,
size_t outputH,
size_t outputW,
real* dataCol) {}

inline void hl_maxpool_forward(const int frameCnt,
const real* inputData,
const int channels,
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128 changes: 0 additions & 128 deletions paddle/cuda/src/hl_cuda_cnn.cu
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Expand Up @@ -18,134 +18,6 @@ limitations under the License. */
#include "hl_cnn.h"
#include "hl_device_functions.cuh"

__global__ void KeFeature2col(size_t n, size_t height, const real* data_im,
size_t blockH, size_t blockW, size_t width,
size_t strideH, size_t strideW,
size_t paddingH, size_t paddingW,
size_t height_col, size_t width_col,
real* data_col) {
size_t index =
(blockIdx.x * gridDim.y + blockIdx.y) * blockDim.x + threadIdx.x;
if (index < n) {
size_t w_out = index % width_col;
index /= width_col;
size_t h_out = index % height_col;
size_t channel_in = index / height_col;
size_t channel_out = channel_in * blockH * blockW;
size_t h_in = h_out * strideH;
size_t w_in = w_out * strideW;

data_col += (channel_out * height_col + h_out) * width_col + w_out;
for (size_t i = 0; i < blockH; ++i) {
for (size_t j = 0; j < blockW; ++j) {
int rIdx = int(h_in+i);
int cIdx = int(w_in+j);
if ((rIdx-(int)paddingH) >= (int)height ||
(rIdx-(int)paddingH) < 0 ||
(cIdx-(int)paddingW) >= (int)width ||
(cIdx-(int)paddingW) < 0) {
*data_col = 0;
} else {
rIdx = rIdx + channel_in*height - paddingH;
cIdx = cIdx - paddingW;
*data_col = data_im[rIdx* width + cIdx];
}
data_col += height_col * width_col;
}
}
}
}

void hl_expand_feature2col(const real* dataIm, size_t channels,
size_t height, size_t width,
size_t blockH, size_t blockW,
size_t strideH, size_t strideW,
size_t paddingH, size_t paddingW,
size_t outputH, size_t outputW,
real* dataCol) {
size_t numKernels = channels * outputH * outputW;

size_t blocks = (numKernels + 1024 -1) / 1024;
size_t blockX = 512;
size_t blockY = (blocks+512-1)/512;
dim3 threads(1024, 1);
dim3 grid(blockX, blockY);
KeFeature2col<<< grid, threads, 0, STREAM_DEFAULT >>>
(numKernels, height, dataIm, blockH, blockW, width,
strideH, strideW, paddingH, paddingW,
outputH, outputW, dataCol);
CHECK_SYNC("hl_expand_feature2col failed");
}

__global__ void KeCol2Feature(size_t n, const real* data_col, size_t height,
size_t width, size_t channels,
size_t blockH, size_t blockW,
size_t strideH, size_t strideW,
size_t paddingH, size_t paddingW,
size_t height_col, size_t width_col,
real* data_im, real alpha, real beta) {
size_t index =
(blockIdx.x * gridDim.y + blockIdx.y) * blockDim.x + threadIdx.x;
if (index < n) {
real val = 0;
int w = int(index % width);
int h = int((index / width) % height);
int c = int(index / (width * height));
if ((w - (int)paddingW) >= 0 &&
(w - (int)paddingW) < (width-2 * paddingW) &&
(h - (int)paddingH) >= 0 &&
(h - paddingH) < (height - 2 * paddingH)) {
// compute the start and end of the output
int w_col_start =
(w < (int)blockW) ? 0 : (w - int(blockW)) / (int)strideW + 1;
int w_col_end =
min((int)(w / (int)strideW + 1), (int)(width_col));
int h_col_start =
(h < (int)blockH) ? 0 : (h - (int)blockH) / (int)strideH + 1;
int h_col_end = min(int(h / strideH + 1), int(height_col));
for (int h_col = h_col_start; h_col < h_col_end; ++h_col) {
for (int w_col = w_col_start; w_col < w_col_end; ++w_col) {
// the col location: [c * width * height + h_out, w_out]
int c_col = int(c * blockH* blockW) + \
(h - h_col * (int)strideH) * (int)blockW +
(w - w_col * (int)strideW);
val += data_col[(c_col * height_col + h_col) * width_col + w_col];
}
}
h -= paddingH;
w -= paddingW;
real tD = data_im[c*((width-2*paddingW) * (height-2*paddingH)) +
h*(width-2*paddingW) + w];
data_im[c*((width-2*paddingW) * (height-2*paddingH)) +
h*(width-2*paddingW) + w] = alpha * val + beta*tD;
}
}
}

void hl_shrink_col2feature(const real * dataCol, size_t channels,
size_t height, size_t width,
size_t blockH, size_t blockW,
size_t strideH, size_t strideW,
size_t paddingH, size_t paddingW,
size_t outputH, size_t outputW,
real* dataIm, real alpha, real beta) {
size_t numKernels = channels * (height + 2*paddingH) * (width + 2*paddingW);

size_t blocks = (numKernels + 1024 -1) / 1024;
size_t blockX = 512;
size_t blockY = (blocks+512-1)/512;
dim3 threads(1024, 1);
dim3 grid(blockX, blockY);

// To avoid involving atomic operations, we will launch one kernel per
// bottom dimension, and then in the kernel add up the top dimensions.
KeCol2Feature<<< grid, threads, 0, STREAM_DEFAULT >>>
(numKernels, dataCol, height + 2*paddingH, width + 2*paddingW,
channels, blockH, blockW, strideH, strideW, paddingH, paddingW,
outputH, outputW, dataIm, alpha, beta);
CHECK_SYNC("hl_shrink_col2feature failed");
}

__global__ void KeMaxPoolForward(const int nthreads, const real* inputData,
const int channels, const int height,
const int width,
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