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optimized gpumat::setTo(), ~ 30 speedup

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This commit is contained in:
Andrey Morozov 2010-07-22 08:59:23 +00:00
parent 8bb987e436
commit 7bf29e1488
3 changed files with 71 additions and 93 deletions
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1
modules/gpu/src/cuda/cuda_shared.hpp
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@ -60,7 +60,6 @@ namespace cv
{
static inline int divUp(int a, int b) { return (a % b == 0) ? a/b : a/b + 1; }
extern "C" void set_to_without_mask (const DevMem2D& mat, const double * scalar, int depth, int channels);
extern "C" void set_to_with_mask (const DevMem2D& mat, const double * scalar, const DevMem2D& mask, int depth, int channels);
}

146
modules/gpu/src/cuda/matrix_operations.cu
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@ -50,97 +50,32 @@ __constant__ __align__(16) float scalar_d[4];
namespace mat_operators
{
template <typename T, int channels, int count = channels>
struct unroll
{
__device__ static void unroll_set(T * mat, size_t i)
{
mat[i] = static_cast<T>(scalar_d[channels - count]);
unroll<T, channels, count - 1>::unroll_set(mat, i+1);
}
__device__ static void unroll_set_with_mask(T * mat, unsigned char mask, size_t i)
{
if ( mask != 0 )
mat[i] = static_cast<T>(scalar_d[channels - count]);
unroll<T, channels, count - 1>::unroll_set_with_mask(mat, mask, i+1);
}
};
template <typename T, int channels>
struct unroll<T, channels, 0>
{
__device__ static void unroll_set(T * , size_t){}
__device__ static void unroll_set_with_mask(T * , unsigned char, size_t){}
};
template <typename T, int channels>
__device__ size_t GetIndex(size_t i, int cols, int step)
{
size_t ret = (i / static_cast<size_t>(cols))*static_cast<size_t>(step) / static_cast<size_t>(sizeof(T)) +
(i % static_cast<size_t>(cols))*static_cast<size_t>(channels);
return ret;
}
template <typename T, int channels>
template<typename T, int channels>
__global__ void kernel_set_to_without_mask(T * mat, int cols, int rows, int step)
{
size_t i = (blockIdx.x * blockDim.x + threadIdx.x);
size_t x = blockIdx.x * blockDim.x + threadIdx.x;
size_t y = blockIdx.y * blockDim.y + threadIdx.y;
if (i < cols * rows)
if ((x < cols * channels ) && (y < rows))
{
unroll<T, channels>::unroll_set(mat, GetIndex<T,channels>(i, cols, step));
size_t idx = y * (step / sizeof(T)) + x;
mat[idx] = scalar_d[ x % channels ];
}
}
template <typename T, int channels>
__global__ void kernel_set_to_with_mask(T * mat, const unsigned char * mask, int cols, int rows, int step)
template<typename T, int channels>
__global__ void kernel_set_to_with_mask(T * mat, const unsigned char * mask, int cols, int rows, int step, int step_mask)
{
size_t i = (blockIdx.x * blockDim.x + threadIdx.x);
if (i < cols * rows)
unroll<T, channels>::unroll_set_with_mask(mat, mask[i], GetIndex<T,channels>(i, cols, step));
}
}
size_t x = blockIdx.x * blockDim.x + threadIdx.x;
size_t y = blockIdx.y * blockDim.y + threadIdx.y;
extern "C" void cv::gpu::impl::set_to_with_mask(const DevMem2D& mat, const double * scalar, const DevMem2D& mask, int elemSize1, int channels)
{
// download scalar to constant memory
float data[4];
data[0] = static_cast<float>(scalar[0]);
data[1] = static_cast<float>(scalar[1]);
data[2] = static_cast<float>(scalar[2]);
data[3] = static_cast<float>(scalar[3]);
cudaSafeCall( cudaMemcpyToSymbol(scalar_d, &data, sizeof(data)));
dim3 threadsPerBlock(256,1,1);
dim3 numBlocks (mat.rows * mat.cols / threadsPerBlock.x + 1, 1, 1);
if (channels == 1)
if (mask[y * step_mask + x] != 0)
if ((x < cols * channels ) && (y < rows))
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 1><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 1><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float , 1><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
size_t idx = y * (step / sizeof(T)) + x;
mat[idx] = scalar_d[ x % channels ];
}
if (channels == 2)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 2><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 2><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float , 2><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
}
if (channels == 3)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 3><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 3><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float , 3><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
}
if (channels == 4)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 4><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 4><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float , 4><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step);
}
cudaSafeCall( cudaThreadSynchronize() );
}
extern "C" void cv::gpu::impl::set_to_without_mask(const DevMem2D& mat, const double * scalar, int elemSize1, int channels)
@ -152,26 +87,26 @@ extern "C" void cv::gpu::impl::set_to_without_mask(const DevMem2D& mat, const do
data[3] = static_cast<float>(scalar[3]);
cudaSafeCall( cudaMemcpyToSymbol(scalar_d, &data, sizeof(data)));
dim3 threadsPerBlock(256, 1, 1);
dim3 numBlocks (mat.rows * mat.cols / threadsPerBlock.x + 1, 1, 1);
dim3 threadsPerBlock(16, 16, 1);
dim3 numBlocks (mat.cols * channels / threadsPerBlock.x + 1, mat.rows / threadsPerBlock.y + 1, 1);
if (channels == 1)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char, 1><<<numBlocks,threadsPerBlock>>>(mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 1><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask< float, 1><<<numBlocks,threadsPerBlock>>>(( float *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask<float, 1><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, mat.cols, mat.rows, mat.step);
}
if (channels == 2)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char, 2><<<numBlocks,threadsPerBlock>>>(mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 2><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask< float , 2><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask<float, 2><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, mat.cols, mat.rows, mat.step);
}
if (channels == 3)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char, 3><<<numBlocks,threadsPerBlock>>>(mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 3><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask< float, 3><<<numBlocks,threadsPerBlock>>>(( float *)mat.ptr, mat.cols, mat.rows, mat.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask<float, 3><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, mat.cols, mat.rows, mat.step);
}
if (channels == 4)
{
@ -180,5 +115,46 @@ extern "C" void cv::gpu::impl::set_to_without_mask(const DevMem2D& mat, const do
if (elemSize1 == 4) ::mat_operators::kernel_set_to_without_mask<float, 4><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, mat.cols, mat.rows, mat.step);
}
cudaSafeCall( cudaThreadSynchronize() );
cudaSafeCall ( cudaThreadSynchronize() );
}
extern "C" void cv::gpu::impl::set_to_with_mask(const DevMem2D& mat, const double * scalar, const DevMem2D& mask, int elemSize1, int channels)
{
float data[4];
data[0] = static_cast<float>(scalar[0]);
data[1] = static_cast<float>(scalar[1]);
data[2] = static_cast<float>(scalar[2]);
data[3] = static_cast<float>(scalar[3]);
cudaSafeCall( cudaMemcpyToSymbol(scalar_d, &data, sizeof(data)));
dim3 threadsPerBlock(16, 16, 1);
dim3 numBlocks (mat.cols * channels / threadsPerBlock.x + 1, mat.rows / threadsPerBlock.y + 1, 1);
if (channels == 1)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 1><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 1><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float, 1><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
}
if (channels == 2)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 2><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 2><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float, 2><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
}
if (channels == 3)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 3><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 3><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float, 3><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
}
if (channels == 4)
{
if (elemSize1 == 1) ::mat_operators::kernel_set_to_with_mask<unsigned char, 4><<<numBlocks,threadsPerBlock>>>(mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 2) ::mat_operators::kernel_set_to_with_mask<unsigned short, 4><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
if (elemSize1 == 4) ::mat_operators::kernel_set_to_with_mask<float, 4><<<numBlocks,threadsPerBlock>>>((float *)mat.ptr, (unsigned char *)mask.ptr, mat.cols, mat.rows, mat.step, mask.step);
}
cudaSafeCall ( cudaThreadSynchronize() );
}

11
tests/gpu/src/operator_set_to.cpp
View File

@ -6,6 +6,7 @@
#include <iterator>
#include <limits>
#include <numeric>
#include <iomanip> // for cout << setw()
using namespace cv;
using namespace std;
@ -35,6 +36,7 @@ class CV_GpuMatOpSetTo : public CvTest
bool test_cv_32f_c3();
bool test_cv_32f_c4();
private:
int rows;
int cols;
@ -43,8 +45,8 @@ class CV_GpuMatOpSetTo : public CvTest
CV_GpuMatOpSetTo::CV_GpuMatOpSetTo(): CvTest( "GpuMatOperatorSetTo", "setTo" )
{
rows = 127;
cols = 129;
rows = 129;
cols = 127;
s.val[0] = 128.0;
s.val[1] = 128.0;
@ -75,8 +77,9 @@ bool CV_GpuMatOpSetTo::compare_matrix(cv::Mat & cpumat, gpu::GpuMat & gpumat)
//int64 time1 = getTickCount();
gpumat.setTo(s);
//int64 time2 = getTickCount();
//std::cout << "\ntime cpu:" << double((time1 - time) / getTickFrequency());
//std::cout << "\ntime gpu:" << double((time2 - time1) / getTickFrequency());
//std::cout << "\ntime cpu: " << std::fixed << std::setprecision(12) << double((time1 - time) / (double)getTickFrequency());
//std::cout << "\ntime gpu: " << std::fixed << std::setprecision(12) << double((time2 - time1) / (double)getTickFrequency());
//std::cout << "\n";
#ifdef PRINT_MATRIX