diff options
Diffstat (limited to 'matrix/generic/cukernel.cu')
| -rw-r--r-- | matrix/generic/cukernel.cu | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/matrix/generic/cukernel.cu b/matrix/generic/cukernel.cu index ffae5ed..d6c8adc 100644 --- a/matrix/generic/cukernel.cu +++ b/matrix/generic/cukernel.cu @@ -237,9 +237,18 @@ __global__ void cudak_(rearrange_frm)(const MATRIX_ELEM *a, MATRIX_ELEM *b, b[j + i * stride] = a[j / step + (j % step) * orig_dim + i * stride]; } -__global__ void cudak_(scale_row)(const MATRIX_ELEM *a, MATRIX_ELEM *b, - int nrow, int ncol, - int stride) { +__global__ void cudak_(scale_rows_by_col)(const MATRIX_ELEM *a, MATRIX_ELEM *b, + int nrow, int ncol, + int astride, int bstride) { + int j = blockIdx.x * blockDim.x + threadIdx.x; + int i = blockIdx.y * blockDim.y + threadIdx.y; + if (i >= nrow || j >= ncol) return; + b[j + i * bstride] *= a[i * astride]; +} + +__global__ void cudak_(scale_rows_by_row)(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; if (i >= nrow || j >= ncol) return; @@ -526,11 +535,23 @@ extern "C" { cudaStreamSynchronize(0); } - void cudak_(cuda_scale_row)(const Matrix *a, Matrix *b) { + void cudak_(cuda_scale_rows_by_col)(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_(scale_rows_by_col)<<<numBlocks, threadsPerBlock>>> \ + (MATRIX_ELEM_PTR(a), MATRIX_ELEM_PTR(b), + b->nrow, b->ncol, + a->stride / sizeof(MATRIX_ELEM), + b->stride / sizeof(MATRIX_ELEM)); + cudaStreamSynchronize(0); + } + + void cudak_(cuda_scale_rows_by_row)(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_(scale_row)<<<numBlocks, threadsPerBlock>>> \ + cudak_(scale_rows_by_row)<<<numBlocks, threadsPerBlock>>> \ (MATRIX_ELEM_PTR(a), MATRIX_ELEM_PTR(b), b->nrow, b->ncol, b->stride / sizeof(MATRIX_ELEM)); cudaStreamSynchronize(0); |