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1 files changed, 34 insertions, 0 deletions

diff --git a/llama.cpp/ggml/src/ggml-cuda/scale.cu b/llama.cpp/ggml/src/ggml-cuda/scale.cu
new file mode 100644
index 0000000..0ddeff6
--- /dev/null
+++ b/llama.cpp/ggml/src/ggml-cuda/scale.cu
@@ -0,0 +1,34 @@
+#include "scale.cuh"
+
+#define MAX_GRIDDIM_X 0x7FFFFFFF
+
+static __global__ void scale_f32(const float * x, float * dst, const float scale, const float bias, const int64_t nelements) {
+    int64_t tid = (int64_t)blockIdx.x * (int64_t)blockDim.x + (int64_t)threadIdx.x;
+    int64_t stride = (int64_t)blockDim.x * (int64_t)gridDim.x;
+
+    for (int64_t i = tid; i < nelements; i += stride) {
+        dst[i] = scale * x[i] + bias;
+    }
+}
+
+static void scale_f32_cuda(const float * x, float * dst, const float scale, const float bias, const int64_t nelements, cudaStream_t stream) {
+    const int64_t num_blocks = (nelements + CUDA_SCALE_BLOCK_SIZE - 1) / CUDA_SCALE_BLOCK_SIZE;
+    scale_f32<<<MIN(MAX_GRIDDIM_X, num_blocks), CUDA_SCALE_BLOCK_SIZE, 0, stream>>>(x, dst, scale, bias, nelements);
+}
+
+void ggml_cuda_op_scale(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
+    const ggml_tensor * src0 = dst->src[0];
+    const float * src0_d = (const float *)src0->data;
+    float * dst_d = (float *)dst->data;
+    cudaStream_t stream = ctx.stream();
+
+    GGML_ASSERT(src0->type == GGML_TYPE_F32);
+    GGML_ASSERT( dst->type == GGML_TYPE_F32);
+
+    float scale;
+    float bias;
+    memcpy(&scale, (float *) dst->op_params + 0, sizeof(float));
+    memcpy(&bias,  (float *) dst->op_params + 1, sizeof(float));
+
+    scale_f32_cuda(src0_d, dst_d, scale, bias, ggml_nelements(src0), stream);
+}