| | |
| | | #include "cuda_runtime.h" |
| | | #include "curand.h" |
| | | #include "cublas_v2.h" |
| | | |
| | | extern "C" { |
| | | #include "blas.h" |
| | | #include "cuda.h" |
| | |
| | | variance_delta[i] *= -.5 * pow(variance[i] + .00001f, (float)(-3./2.)); |
| | | } |
| | | |
| | | __global__ void spatial_variance_delta_kernel(float *x, float *delta, float *mean, float *variance, int batch, int filters, int spatial, float *spatial_variance_delta) |
| | | { |
| | | int i = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if (i >= batch*filters) return; |
| | | int f = i%filters; |
| | | int b = i/filters; |
| | | |
| | | int k; |
| | | spatial_variance_delta[i] = 0; |
| | | for (k = 0; k < spatial; ++k) { |
| | | int index = b*filters*spatial + f*spatial + k; |
| | | spatial_variance_delta[i] += delta[index]*(x[index] - mean[f]); |
| | | } |
| | | spatial_variance_delta[i] *= -.5 * pow(variance[f] + .00001f, (float)(-3./2.)); |
| | | } |
| | | |
| | | extern "C" void variance_delta_gpu(float *x, float *delta, float *mean, float *variance, int batch, int filters, int spatial, float *variance_delta) |
| | | { |
| | | variance_delta_kernel<<<cuda_gridsize(filters), BLOCK>>>(x, delta, mean, variance, batch, filters, spatial, variance_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | __global__ void accumulate_kernel(float *x, int n, int groups, float *sum) |
| | | { |
| | | int k; |
| | |
| | | } |
| | | } |
| | | |
| | | extern "C" void fast_variance_delta_gpu(float *x, float *delta, float *mean, float *variance, int batch, int filters, int spatial, float *spatial_variance_delta, float *variance_delta) |
| | | __global__ void fast_mean_delta_kernel(float *delta, float *variance, int batch, int filters, int spatial, float *mean_delta) |
| | | { |
| | | spatial_variance_delta_kernel<<<cuda_gridsize(filters*batch), BLOCK>>>(x, delta, mean, variance, batch, filters, spatial, spatial_variance_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | accumulate_kernel<<<cuda_gridsize(filters), BLOCK>>>(spatial_variance_delta, batch, filters, variance_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | const int threads = BLOCK; |
| | | __shared__ float local[threads]; |
| | | |
| | | __global__ void spatial_mean_delta_kernel(float *delta, float *variance, int batch, int filters, int spatial, float *spatial_mean_delta) |
| | | { |
| | | int i = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if (i >= batch*filters) return; |
| | | int f = i%filters; |
| | | int b = i/filters; |
| | | int id = threadIdx.x; |
| | | local[id] = 0; |
| | | |
| | | int k; |
| | | spatial_mean_delta[i] = 0; |
| | | for (k = 0; k < spatial; ++k) { |
| | | int index = b*filters*spatial + f*spatial + k; |
| | | spatial_mean_delta[i] += delta[index]; |
| | | int filter = blockIdx.x; |
| | | |
| | | int i, j; |
| | | for(j = 0; j < batch; ++j){ |
| | | for(i = 0; i < spatial; i += threads){ |
| | | int index = j*spatial*filters + filter*spatial + i + id; |
| | | local[id] += (i+id < spatial) ? delta[index] : 0; |
| | | } |
| | | } |
| | | spatial_mean_delta[i] *= (-1./sqrt(variance[f] + .00001f)); |
| | | |
| | | if(id == 0){ |
| | | mean_delta[filter] = 0; |
| | | for(i = 0; i < threads; ++i){ |
| | | mean_delta[filter] += local[i]; |
| | | } |
| | | mean_delta[filter] *= (-1./sqrt(variance[filter] + .00001f)); |
| | | } |
| | | } |
| | | |
| | | extern "C" void fast_mean_delta_gpu(float *delta, float *variance, int batch, int filters, int spatial, float *spatial_mean_delta, float *mean_delta) |
| | | __global__ void fast_variance_delta_kernel(float *x, float *delta, float *mean, float *variance, int batch, int filters, int spatial, float *variance_delta) |
| | | { |
| | | spatial_mean_delta_kernel<<<cuda_gridsize(filters*batch), BLOCK>>>(delta, variance, batch, filters, spatial, spatial_mean_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | accumulate_kernel<<<cuda_gridsize(filters), BLOCK>>>(spatial_mean_delta, batch, filters, mean_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | const int threads = BLOCK; |
| | | __shared__ float local[threads]; |
| | | |
| | | int id = threadIdx.x; |
| | | local[id] = 0; |
| | | |
| | | int filter = blockIdx.x; |
| | | |
| | | int i, j; |
| | | for(j = 0; j < batch; ++j){ |
| | | for(i = 0; i < spatial; i += threads){ |
| | | int index = j*spatial*filters + filter*spatial + i + id; |
| | | |
| | | local[id] += (i+id < spatial) ? delta[index]*(x[index] - mean[filter]) : 0; |
| | | } |
| | | } |
| | | |
| | | if(id == 0){ |
| | | variance_delta[filter] = 0; |
| | | for(i = 0; i < threads; ++i){ |
| | | variance_delta[filter] += local[i]; |
| | | } |
| | | variance_delta[filter] *= -.5 * pow(variance[filter] + .00001f, (float)(-3./2.)); |
| | | } |
| | | } |
| | | |
| | | |
| | | __global__ void mean_delta_kernel(float *delta, float *variance, int batch, int filters, int spatial, float *mean_delta) |
| | | { |
| | | int i = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void fast_mean_delta_gpu(float *delta, float *variance, int batch, int filters, int spatial, float *mean_delta) |
| | | { |
| | | fast_mean_delta_kernel<<<filters, BLOCK>>>(delta, variance, batch, filters, spatial, mean_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void fast_variance_delta_gpu(float *x, float *delta, float *mean, float *variance, int batch, int filters, int spatial, float *variance_delta) |
| | | { |
| | | fast_variance_delta_kernel<<<filters, BLOCK>>>(x, delta, mean, variance, batch, filters, spatial, variance_delta); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | __global__ void mean_kernel(float *x, int batch, int filters, int spatial, float *mean) |
| | | { |
| | | float scale = 1./(batch * spatial); |
| | |
| | | mean[i] *= scale; |
| | | } |
| | | |
| | | __global__ void spatial_variance_kernel(float *x, float *mean, int batch, int filters, int spatial, float *variance) |
| | | { |
| | | float scale = 1./(spatial*batch-1); |
| | | int k; |
| | | int i = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if (i >= batch*filters) return; |
| | | int f = i%filters; |
| | | int b = i/filters; |
| | | |
| | | variance[i] = 0; |
| | | for(k = 0; k < spatial; ++k){ |
| | | int index = b*filters*spatial + f*spatial + k; |
| | | variance[i] += pow((x[index] - mean[f]), 2); |
| | | } |
| | | variance[i] *= scale; |
| | | } |
| | | |
| | | __global__ void variance_kernel(float *x, float *mean, int batch, int filters, int spatial, float *variance) |
| | | { |
| | | float scale = 1./(batch * spatial); |
| | |
| | | if(i < N) Y[i*INCY] *= X[i*INCX]; |
| | | } |
| | | |
| | | |
| | | extern "C" void normalize_gpu(float *x, float *mean, float *variance, int batch, int filters, int spatial) |
| | | { |
| | | size_t N = batch*filters*spatial; |
| | |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | __global__ void fast_mean_kernel(float *x, int batch, int filters, int spatial, float *mean) |
| | | { |
| | | const int threads = BLOCK; |
| | | __shared__ float local[threads]; |
| | | |
| | | int id = threadIdx.x; |
| | | local[id] = 0; |
| | | |
| | | int filter = blockIdx.x; |
| | | |
| | | int i, j; |
| | | for(j = 0; j < batch; ++j){ |
| | | for(i = 0; i < spatial; i += threads){ |
| | | int index = j*spatial*filters + filter*spatial + i + id; |
| | | local[id] += (i+id < spatial) ? x[index] : 0; |
| | | } |
| | | } |
| | | |
| | | if(id == 0){ |
| | | mean[filter] = 0; |
| | | for(i = 0; i < threads; ++i){ |
| | | mean[filter] += local[i]; |
| | | } |
| | | mean[filter] /= spatial * batch; |
| | | } |
| | | } |
| | | |
| | | __global__ void fast_variance_kernel(float *x, float *mean, int batch, int filters, int spatial, float *variance) |
| | | { |
| | | const int threads = BLOCK; |
| | | __shared__ float local[threads]; |
| | | |
| | | int id = threadIdx.x; |
| | | local[id] = 0; |
| | | |
| | | int filter = blockIdx.x; |
| | | |
| | | int i, j; |
| | | for(j = 0; j < batch; ++j){ |
| | | for(i = 0; i < spatial; i += threads){ |
| | | int index = j*spatial*filters + filter*spatial + i + id; |
| | | |
| | | local[id] += (i+id < spatial) ? pow((x[index] - mean[filter]), 2) : 0; |
| | | } |
| | | } |
| | | |
| | | if(id == 0){ |
| | | variance[filter] = 0; |
| | | for(i = 0; i < threads; ++i){ |
| | | variance[filter] += local[i]; |
| | | } |
| | | variance[filter] /= spatial * batch; |
| | | } |
| | | } |
| | | |
| | | extern "C" void fast_mean_gpu(float *x, int batch, int filters, int spatial, float *mean) |
| | | { |
| | | fast_mean_kernel<<<filters, BLOCK>>>(x, batch, filters, spatial, mean); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void fast_variance_gpu(float *x, float *mean, int batch, int filters, int spatial, float *variance) |
| | | { |
| | | fast_variance_kernel<<<filters, BLOCK>>>(x, mean, batch, filters, spatial, variance); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | |
| | | extern "C" void mean_gpu(float *x, int batch, int filters, int spatial, float *mean) |
| | | { |
| | | mean_kernel<<<cuda_gridsize(filters), BLOCK>>>(x, batch, filters, spatial, mean); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void fast_mean_gpu(float *x, int batch, int filters, int spatial, float *spatial_mean, float *mean) |
| | | { |
| | | mean_kernel<<<cuda_gridsize(filters*batch), BLOCK>>>(x, 1, filters*batch, spatial, spatial_mean); |
| | | check_error(cudaPeekAtLastError()); |
| | | mean_kernel<<<cuda_gridsize(filters), BLOCK>>>(spatial_mean, batch, filters, 1, mean); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void fast_variance_gpu(float *x, float *mean, int batch, int filters, int spatial, float *spatial_variance, float *variance) |
| | | { |
| | | spatial_variance_kernel<<<cuda_gridsize(batch*filters), BLOCK>>>(x, mean, batch, filters, spatial, spatial_variance); |
| | | check_error(cudaPeekAtLastError()); |
| | | accumulate_kernel<<<cuda_gridsize(filters), BLOCK>>>(spatial_variance, batch, filters, variance); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | extern "C" void variance_gpu(float *x, float *mean, int batch, int filters, int spatial, float *variance) |
| | | { |
| | | variance_kernel<<<cuda_gridsize(filters), BLOCK>>>(x, mean, batch, filters, spatial, variance); |
| | |
| | | fill_kernel<<<cuda_gridsize(N), BLOCK>>>(N, ALPHA, X, INCX); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |
| | | |
| | | __global__ void shortcut_kernel(int size, float *out, int w, int h, int c, int batch, int sample, float *add, int stride, int c2, int min_c) |
| | | { |
| | | int id = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if (id >= size) return; |
| | | int i = id % (w/sample); |
| | | id /= (w/sample); |
| | | int j = id % (h/sample); |
| | | id /= (h/sample); |
| | | int k = id % min_c; |
| | | id /= min_c; |
| | | int b = id; |
| | | int out_index = i*sample + w*(j*sample + h*(k + c*b)); |
| | | int add_index = b*w*stride/sample*h*stride/sample*c2 + i*stride + w*stride/sample*(j*stride + h*stride/sample*k); |
| | | out[out_index] += add[add_index]; |
| | | } |
| | | |
| | | extern "C" void shortcut_gpu(float *out, int w, int h, int c, int batch, int sample, float *add, int stride, int c2) |
| | | { |
| | | int min_c = (c < c2) ? c : c2; |
| | | int size = batch * w/sample * h/sample * min_c; |
| | | shortcut_kernel<<<cuda_gridsize(size), BLOCK>>>(size, out, w, h, c, batch, sample, add, stride, c2, min_c); |
| | | check_error(cudaPeekAtLastError()); |
| | | } |