diff options
Diffstat (limited to 'matrix/generic/cukernel.cu')
| -rw-r--r-- | matrix/generic/cukernel.cu | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/matrix/generic/cukernel.cu b/matrix/generic/cukernel.cu index 2e794b7..8b929e4 100644 --- a/matrix/generic/cukernel.cu +++ b/matrix/generic/cukernel.cu @@ -113,6 +113,14 @@ __global__ void cudak_(add_row)(const MATRIX_ELEM *a, MATRIX_ELEM *b, b[j + i * stride] += beta * a[j]; } +__global__ void cudak_(fill)(MATRIX_ELEM *a, + int nrow, int ncol, int stride, double val) { + int j = blockIdx.x * blockDim.x + threadIdx.x; + int i = blockIdx.y * blockDim.y + threadIdx.y; + if (i >= nrow || j >= ncol) return; + a[j + i * stride] = val; +} + extern "C" { #include "../cukernel.h" @@ -242,5 +250,15 @@ extern "C" { (MATRIX_ELEM_PTR(a), MATRIX_ELEM_PTR(b), b->nrow, b->ncol, b->stride / sizeof(MATRIX_ELEM), beta); } + + void cudak_(cuda_fill)(Matrix *a, double val) { + dim3 threadsPerBlock(CUDA_THREADS_N, + CUDA_THREADS_N); + dim3 numBlocks(CEIL_DIV(a->ncol, threadsPerBlock.x), + CEIL_DIV(a->nrow, threadsPerBlock.y)); + cudak_(fill)<<<numBlocks, threadsPerBlock>>> \ + (MATRIX_ELEM_PTR(a), a->nrow, a->ncol, + a->stride / sizeof(MATRIX_ELEM), val); + } } #endif |