diff options
Diffstat (limited to 'matrix/generic/cukernel.cu')
| -rw-r--r-- | matrix/generic/cukernel.cu | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/matrix/generic/cukernel.cu b/matrix/generic/cukernel.cu index 517393e..0e3d3cf 100644 --- a/matrix/generic/cukernel.cu +++ b/matrix/generic/cukernel.cu @@ -6,6 +6,27 @@ #define CUDA_THREADS_N 16 #define CUDA_THREADS_NN (16 * 16) #define CEIL_DIV(a, b) (((a) + (b) - 1) / (b)) +__global__ void cudak_(log_elem)(const MATRIX_ELEM *a, MATRIX_ELEM *b, + int nrow, int ncol, int stride) { + int j = blockIdx.x * blockDim.x + threadIdx.x; + int i = blockIdx.y * blockDim.y + threadIdx.y; + long idx; + if (i >= nrow || j >= ncol) return; + idx = j + i * stride; + b[idx] = log(a[idx]); +} + +__global__ void cudak_(mul_elem)(const MATRIX_ELEM *a, const MATRIX_ELEM *b, + MATRIX_ELEM *c, + int nrow, int ncol, int stride) { + int j = blockIdx.x * blockDim.x + threadIdx.x; + int i = blockIdx.y * blockDim.y + threadIdx.y; + long idx; + if (i >= nrow || j >= ncol) return; + idx = j + i * stride; + c[idx] = a[idx] * b[idx]; +} + __global__ void cudak_(sigmoid)(const MATRIX_ELEM *a, MATRIX_ELEM *b, int nrow, int ncol, int stride) { int j = blockIdx.x * blockDim.x + threadIdx.x; @@ -136,6 +157,28 @@ __global__ void cudak_(fill)(MATRIX_ELEM *a, extern "C" { #include "../cukernel.h" + void cudak_(cuda_log_elem)(const Matrix *a, Matrix *b) { + dim3 threadsPerBlock(CUDA_THREADS_N, + CUDA_THREADS_N); + dim3 numBlocks(CEIL_DIV(b->ncol, threadsPerBlock.x), + CEIL_DIV(b->nrow, threadsPerBlock.y)); + cudak_(log_elem)<<<numBlocks, threadsPerBlock>>> \ + (MATRIX_ELEM_PTR(a), MATRIX_ELEM_PTR(b), + b->nrow, b->ncol, b->stride / sizeof(MATRIX_ELEM)); + } + + void cudak_(cuda_mul_elem)(const Matrix *a, const Matrix *b, + Matrix *c) { + dim3 threadsPerBlock(CUDA_THREADS_N, + CUDA_THREADS_N); + dim3 numBlocks(CEIL_DIV(b->ncol, threadsPerBlock.x), + CEIL_DIV(b->nrow, threadsPerBlock.y)); + cudak_(mul_elem)<<<numBlocks, threadsPerBlock>>> \ + (MATRIX_ELEM_PTR(a), MATRIX_ELEM_PTR(b), + MATRIX_ELEM_PTR(c), + b->nrow, b->ncol, b->stride / sizeof(MATRIX_ELEM)); + } + void cudak_(cuda_sigmoid)(const Matrix *a, Matrix *b) { dim3 threadsPerBlock(CUDA_THREADS_N, CUDA_THREADS_N); |