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| author | Mitja Felicijan <mitja.felicijan@gmail.com> | 2026-02-12 20:57:17 +0100 |
|---|---|---|
| committer | Mitja Felicijan <mitja.felicijan@gmail.com> | 2026-02-12 20:57:17 +0100 |
| commit | b333b06772c89d96aacb5490d6a219fba7c09cc6 (patch) | |
| tree | 211df60083a5946baa2ed61d33d8121b7e251b06 /llama.cpp/ggml/src/ggml-cuda/norm.cu | |
| download | llmnpc-b333b06772c89d96aacb5490d6a219fba7c09cc6.tar.gz | |
Engage!
Diffstat (limited to 'llama.cpp/ggml/src/ggml-cuda/norm.cu')
| -rw-r--r-- | llama.cpp/ggml/src/ggml-cuda/norm.cu | 672 |
1 files changed, 672 insertions, 0 deletions
diff --git a/llama.cpp/ggml/src/ggml-cuda/norm.cu b/llama.cpp/ggml/src/ggml-cuda/norm.cu new file mode 100644 index 0000000..ef98f67 --- /dev/null +++ b/llama.cpp/ggml/src/ggml-cuda/norm.cu @@ -0,0 +1,672 @@ +#include "norm.cuh" +#include <cstdint> + +template <int block_size> +static __global__ void norm_f32( + const float * x, float * dst, const int ncols, const int64_t stride_row, const int64_t stride_channel, + const int64_t stride_sample, const float eps) { + const int nrows = gridDim.x; + const int nchannels = gridDim.y; + + const int row = blockIdx.x; + const int channel = blockIdx.y; + const int sample = blockIdx.z; + const int tid = threadIdx.x; + + x += sample*stride_sample + channel*stride_channel + row*stride_row; + dst += ((sample*nchannels + channel)*nrows + row)*ncols; + + float2 mean_var = make_float2(0.0f, 0.0f); + + for (int col = tid; col < ncols; col += block_size) { + const float xi = x[col]; + mean_var.x += xi; + mean_var.y += xi * xi; + } + + // sum up partial sums + extern __shared__ float2 s_sum2[]; + mean_var = block_reduce<block_reduce_method::SUM, block_size>(mean_var, s_sum2); + + const float mean = mean_var.x / ncols; + const float var = mean_var.y / ncols - mean * mean; + const float inv_std = rsqrtf(var + eps); + + for (int col = tid; col < ncols; col += block_size) { + dst[col] = (x[col] - mean) * inv_std; + } +} + +template <int block_size> +static __global__ void group_norm_f32(const float * x, float * dst, const int group_size, const int ne_elements, const float eps) { + // blockIdx.x: num_groups idx + // threadIdx.x: block_size idx + const int start = blockIdx.x*group_size + threadIdx.x; + const int end = min(blockIdx.x*group_size + group_size, ne_elements); + + float tmp = 0.0f; // partial sum for thread in warp + + for (int j = start; j < end; j += block_size) { + tmp += x[j]; + } + + extern __shared__ float s_sum[]; + tmp = block_reduce<block_reduce_method::SUM, block_size>(tmp, s_sum); + + const float mean = tmp / group_size; + tmp = 0.0f; + + for (int j = start; j < end; j += block_size) { + const float xi = x[j] - mean; + dst[j] = xi; + tmp += xi * xi; + } + + tmp = block_reduce<block_reduce_method::SUM, block_size>(tmp, s_sum); + + const float variance = tmp / group_size; + const float scale = rsqrtf(variance + eps); + for (int j = start; j < end; j += block_size) { + dst[j] *= scale; + } +} + +template <int block_size, bool do_multiply = false, bool do_add = false> +static __global__ void rms_norm_f32(const float * x, + float * dst, + const int ncols, + const int64_t stride_row, + const int64_t stride_channel, + const int64_t stride_sample, + const float eps, + const float * mul = nullptr, + const int64_t mul_stride_row = 0, + const int64_t mul_stride_channel = 0, + const int64_t mul_stride_sample = 0, + const uint3 mul_ncols_packed = make_uint3(0, 0, 0), + const uint3 mul_nrows_packed = make_uint3(0, 0, 0), + const uint3 mul_nchannels_packed = make_uint3(0, 0, 0), + const uint3 mul_nsamples_packed = make_uint3(0, 0, 0), + const float * add = nullptr, + const int64_t add_stride_row = 0, + const int64_t add_stride_channel = 0, + const int64_t add_stride_sample = 0, + const uint3 add_ncols_packed = make_uint3(0, 0, 0), + const uint3 add_nrows_packed = make_uint3(0, 0, 0), + const uint3 add_nchannels_packed = make_uint3(0, 0, 0), + const uint3 add_nsamples_packed = make_uint3(0, 0, 0)) { + const int nrows = gridDim.x; + const int nchannels = gridDim.y; + + const int row = blockIdx.x; + const int channel = blockIdx.y; + const int sample = blockIdx.z; + const int tid = threadIdx.x; + + static_assert(!do_add || do_multiply, "fusing add is not supported without multiplying"); + + x += sample*stride_sample + channel*stride_channel + row*stride_row; + dst += ((sample*nchannels + channel)*nrows + row)*ncols; + + if constexpr (do_multiply) { + const uint32_t mul_row = fastmodulo(row, mul_nrows_packed); + const uint32_t mul_channel = fastmodulo(channel, mul_nchannels_packed); + const uint32_t mul_sample = fastmodulo(sample, mul_nsamples_packed); + mul += mul_sample * mul_stride_sample + mul_channel * mul_stride_channel + mul_row * mul_stride_row; + } + + if constexpr (do_add) { + const int add_row = fastmodulo(row, add_nrows_packed); + const int add_channel = fastmodulo(channel, add_nchannels_packed); + const int add_sample = fastmodulo(sample, add_nsamples_packed); + add += add_sample * add_stride_sample + add_channel * add_stride_channel + add_row * add_stride_row; + } + + float tmp = 0.0f; // partial sum for thread in warp + + for (int col = tid; col < ncols; col += block_size) { + const float xi = x[col]; + tmp += xi * xi; + } + + // sum up partial sums + extern __shared__ float s_sum[]; + tmp = block_reduce<block_reduce_method::SUM, block_size>(tmp, s_sum); + + const float mean = tmp / ncols; + const float scale = rsqrtf(mean + eps); + + for (int col = tid; col < ncols; col += block_size) { + if constexpr (do_multiply && do_add) { + const int mul_col = fastmodulo(col, mul_ncols_packed); + const int add_col = fastmodulo(col, add_ncols_packed); + dst[col] = scale * x[col] * mul[mul_col] + add[add_col]; + } else if constexpr (do_multiply) { + const int mul_col = fastmodulo(col, mul_ncols_packed); + dst[col] = scale * x[col] * mul[mul_col]; + } else { + dst[col] = scale * x[col]; + } + } +} + +template <int block_size> +static __global__ void rms_norm_back_f32( + const float * grad, const float * xf, float * dst, const int ncols, const float eps) { + const int row = blockIdx.x*blockDim.y + threadIdx.y; + const int tid = threadIdx.x; + + grad += int64_t(row)*ncols; + xf += int64_t(row)*ncols; + dst += int64_t(row)*ncols; + + float sum_xx = 0.0f; // sum for squares of x, equivalent to forward pass + float sum_xg = 0.0f; // sum for x * gradient, needed because RMS norm mixes inputs + + for (int col = tid; col < ncols; col += block_size) { + const float xfi = xf[col]; + sum_xx += xfi * xfi; + sum_xg += xfi * grad[col]; + } + + // sum up partial sums + sum_xx = warp_reduce_sum(sum_xx); + sum_xg = warp_reduce_sum(sum_xg); + if constexpr (block_size > WARP_SIZE) { + static_assert(block_size == 1024, "unexpected block_size"); + __shared__ float s_sum_xx[32]; + __shared__ float s_sum_xg[32]; + const int warp_id = threadIdx.x / WARP_SIZE; + const int lane_id = threadIdx.x % WARP_SIZE; + if (lane_id == 0) { + s_sum_xx[warp_id] = sum_xx; + s_sum_xg[warp_id] = sum_xg; + } + __syncthreads(); + + sum_xx = s_sum_xx[lane_id]; + sum_xx = warp_reduce_sum(sum_xx); + + sum_xg = s_sum_xg[lane_id]; + sum_xg = warp_reduce_sum(sum_xg); + } + + const float mean_eps = sum_xx / ncols + eps; + const float sum_eps = sum_xx + ncols*eps; + + const float scale_grad = rsqrtf(mean_eps); + const float scale_x = -scale_grad * sum_xg/sum_eps; + + for (int col = tid; col < ncols; col += block_size) { + dst[col] = scale_grad*grad[col] + scale_x*xf[col]; + } +} + +// template <int block_size> +// static __global__ void l2_norm_f32(const float * x, float * dst, const int ncols, const float eps) { +// const int row = blockIdx.x*blockDim.y + threadIdx.y; +// const int tid = threadIdx.x; + +// float tmp = 0.0f; // partial sum for thread in warp + +// for (int col = tid; col < ncols; col += block_size) { +// const float xi = x[row*ncols + col]; +// tmp += xi * xi; +// } + +// // sum up partial sums +// tmp = warp_reduce_sum(tmp); +// if (block_size > WARP_SIZE) { +// __shared__ float s_sum[32]; +// int warp_id = threadIdx.x / WARP_SIZE; +// int lane_id = threadIdx.x % WARP_SIZE; +// if (lane_id == 0) { +// s_sum[warp_id] = tmp; +// } +// __syncthreads(); +// tmp = s_sum[lane_id]; +// tmp = warp_reduce_sum(tmp); +// } + +// // from https://pytorch.org/docs/stable/generated/torch.nn.functional.normalize.html +// const float scale = rsqrtf(fmaxf(tmp, eps * eps)); + +// for (int col = tid; col < ncols; col += block_size) { +// dst[row*ncols + col] = scale * x[row*ncols + col]; +// } +// } + +template <int block_size> +static __global__ void l2_norm_f32( + const float * x, float * dst, const int ncols, const int64_t stride_row, const int64_t stride_channel, + const int64_t stride_sample, const float eps) { + const int nrows = gridDim.x; + const int nchannels = gridDim.y; + + const int row = blockIdx.x; + const int channel = blockIdx.y; + const int sample = blockIdx.z; + const int tid = threadIdx.x; + + x += sample*stride_sample + channel*stride_channel + row*stride_row; + dst += ((sample*nchannels + channel)*nrows + row)*ncols; + + float tmp = 0.0f; // partial sum for thread in warp + + for (int col = tid; col < ncols; col += block_size) { + const float xi = x[col]; + tmp += xi * xi; + } + + // sum up partial sums + extern __shared__ float s_sum[]; + tmp = block_reduce<block_reduce_method::SUM, block_size>(tmp, s_sum); + + // from https://pytorch.org/docs/stable/generated/torch.nn.functional.normalize.html + const float scale = rsqrtf(fmaxf(tmp, eps * eps)); + + for (int col = tid; col < ncols; col += block_size) { + dst[col] = scale * x[col]; + } +} + +static void norm_f32_cuda( + const float * x, float * dst, const int ncols, const int nrows, const int nchannels, const int nsamples, + const int64_t stride_row, const int64_t stride_channel, const int64_t stride_sample, const float eps, cudaStream_t stream) { + const dim3 blocks_num(nrows, nchannels, nsamples); + if (ncols < 1024) { + const dim3 block_dims(WARP_SIZE, 1, 1); + norm_f32<WARP_SIZE><<<blocks_num, block_dims, 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } else { + const dim3 block_dims(1024, 1, 1); + norm_f32<1024><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float2): 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } +} + +static void group_norm_f32_cuda( + const float * x, float * dst, const int num_groups, const float eps, const int group_size, const int ne_elements, cudaStream_t stream) { + if (group_size < 1024) { + const dim3 block_dims(WARP_SIZE, 1, 1); + group_norm_f32<WARP_SIZE><<<num_groups, block_dims, 0, stream>>>(x, dst, group_size, ne_elements, eps); + } else { + const dim3 block_dims(1024, 1, 1); + group_norm_f32<1024><<<num_groups, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>(x, dst, group_size, ne_elements, eps); + } +} + +static void rms_norm_f32_cuda( + const float * x, float * dst, const int ncols, const int nrows, const int nchannels, const int nsamples, + const int64_t stride_row, const int64_t stride_channel, const int64_t stride_sample, const float eps, cudaStream_t stream) { + const dim3 blocks_num(nrows, nchannels, nsamples); + if (ncols < 1024) { + const dim3 block_dims(256, 1, 1); + rms_norm_f32<256, false><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } else { + const dim3 block_dims(1024, 1, 1); + rms_norm_f32<1024, false><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } +} + +static void rms_norm_mul_f32_cuda(const float * x, + const float * mul, + const float * add, + float * dst, + const int ncols, + const int nrows, + const int nchannels, + const int nsamples, + const int64_t stride_row, + const int64_t stride_channel, + const int64_t stride_sample, + const int64_t mul_stride_row, + const int64_t mul_stride_channel, + const int64_t mul_stride_sample, + const uint32_t mul_ncols, + const uint32_t mul_nrows, + const uint32_t mul_nchannels, + const uint32_t mul_nsamples, + const int64_t add_stride_row, + const int64_t add_stride_channel, + const int64_t add_stride_sample, + const uint32_t add_ncols, + const uint32_t add_nrows, + const uint32_t add_nchannels, + const uint32_t add_nsamples, + const float eps, + cudaStream_t stream) { + const dim3 blocks_num(nrows, nchannels, nsamples); + if (mul == nullptr) { + rms_norm_f32_cuda(x, dst, ncols, nrows, nchannels, nsamples, stride_row, stride_channel, stride_sample, eps, stream); + return; + } + if (add == nullptr) { + const uint3 mul_ncols_packed = init_fastdiv_values(mul_ncols); + const uint3 mul_nrows_packed = init_fastdiv_values(mul_nrows); + const uint3 mul_nchannels_packed = init_fastdiv_values(mul_nchannels); + const uint3 mul_nsamples_packed = init_fastdiv_values(mul_nsamples); + if (ncols < 1024) { + const dim3 block_dims(256, 1, 1); + rms_norm_f32<256, true><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>( + x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, + mul_stride_sample, mul_ncols_packed, mul_nrows_packed, mul_nchannels_packed, mul_nsamples_packed); + } else { + const dim3 block_dims(1024, 1, 1); + rms_norm_f32<1024, true><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>( + x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, + mul_stride_sample, mul_ncols_packed, mul_nrows_packed, mul_nchannels_packed, mul_nsamples_packed); + } + } else { + const uint3 mul_ncols_packed = init_fastdiv_values(mul_ncols); + const uint3 mul_nrows_packed = init_fastdiv_values(mul_nrows); + const uint3 mul_nchannels_packed = init_fastdiv_values(mul_nchannels); + const uint3 mul_nsamples_packed = init_fastdiv_values(mul_nsamples); + + const uint3 add_ncols_packed = init_fastdiv_values(add_ncols); + const uint3 add_nrows_packed = init_fastdiv_values(add_nrows); + const uint3 add_nchannels_packed = init_fastdiv_values(add_nchannels); + const uint3 add_nsamples_packed = init_fastdiv_values(add_nsamples); + if (ncols < 1024) { + const dim3 block_dims(256, 1, 1); + rms_norm_f32<256, true, true><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>( + x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, + mul_stride_sample, mul_ncols_packed, mul_nrows_packed, mul_nchannels_packed, mul_nsamples_packed, add, + add_stride_row, add_stride_channel, add_stride_sample, add_ncols_packed, add_nrows_packed, + add_nchannels_packed, add_nsamples_packed); + } else { + const dim3 block_dims(1024, 1, 1); + rms_norm_f32<1024, true, true><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>( + x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, + mul_stride_sample, mul_ncols_packed, mul_nrows_packed, mul_nchannels_packed, mul_nsamples_packed, add, + add_stride_row, add_stride_channel, add_stride_sample, add_ncols_packed, add_nrows_packed, + add_nchannels_packed, add_nsamples_packed); + } + } +} + +static void rms_norm_back_f32_cuda(const float * grad, const float * xf, float * dst, const int ncols, const int nrows, const float eps, cudaStream_t stream) { + if (ncols < 1024) { + const dim3 block_dims(WARP_SIZE, 1, 1); + rms_norm_back_f32<WARP_SIZE><<<nrows, block_dims, 0, stream>>>(grad, xf, dst, ncols, eps); + } else { + const dim3 block_dims(1024, 1, 1); + rms_norm_back_f32<1024><<<nrows, block_dims, 0, stream>>>(grad, xf, dst, ncols, eps); + } +} + +static void l2_norm_f32_cuda( + const float * x, float * dst, const int ncols, const int nrows, const int nchannels, const int nsamples, + const int64_t stride_row, const int64_t stride_channel, const int64_t stride_sample, const float eps, cudaStream_t stream) { + const dim3 blocks_num(nrows, nchannels, nsamples); + if (ncols < 1024) { + const dim3 block_dims(WARP_SIZE, 1, 1); + l2_norm_f32<WARP_SIZE><<<blocks_num, block_dims, 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } else { + const dim3 block_dims(1024, 1, 1); + l2_norm_f32<1024><<<blocks_num, block_dims, block_dims.x > WARP_SIZE ? 32 * sizeof(float): 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps); + } +} + +void ggml_cuda_op_norm(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); + + GGML_TENSOR_UNARY_OP_LOCALS; + + float eps; + memcpy(&eps, dst->op_params, sizeof(float)); + GGML_ASSERT(eps >= 0.0f); + + const size_t ts0 = ggml_type_size(src0->type); + GGML_ASSERT(nb00 == ts0); + const int64_t s01 = nb01 / ts0; + const int64_t s02 = nb02 / ts0; + const int64_t s03 = nb03 / ts0; + + norm_f32_cuda(src0_d, dst_d, ne00, ne01, ne02, ne03, s01, s02, s03, eps, stream); +} + +void ggml_cuda_op_group_norm(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); + + int num_groups = dst->op_params[0]; + + float eps; + memcpy(&eps, dst->op_params + 1, sizeof(float)); + GGML_ASSERT(eps >= 0.0f); + + int group_size = src0->ne[0] * src0->ne[1] * ((src0->ne[2] + num_groups - 1) / num_groups); + group_norm_f32_cuda(src0_d, dst_d, num_groups * src0->ne[3], eps, group_size, ggml_nelements(src0), stream); +} + +void ggml_cuda_op_rms_norm(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); + + GGML_TENSOR_UNARY_OP_LOCALS; + + float eps; + memcpy(&eps, dst->op_params, sizeof(float)); + GGML_ASSERT(eps >= 0.0f); + + const size_t ts0 = ggml_type_size(src0->type); + GGML_ASSERT(nb00 == ts0); + const int64_t s01 = nb01 / ts0; + const int64_t s02 = nb02 / ts0; + const int64_t s03 = nb03 / ts0; + + rms_norm_f32_cuda(src0_d, dst_d, ne00, ne01, ne02, ne03, s01, s02, s03, eps, stream); +} + +void ggml_cuda_op_rms_norm_fused(ggml_backend_cuda_context & ctx, ggml_tensor * dst, ggml_tensor * mul_tensor) { + const ggml_tensor * rms_norm_src = (ggml_tensor *) dst->src[0]; + float eps = 0.0f; + + memcpy(&eps, dst->op_params, sizeof(float)); + + const float * src0_d = (const float *) rms_norm_src->data; + const float * mul_d = nullptr; + const ggml_tensor * mul_src = nullptr; + + if (mul_tensor->src[0] == dst) { + mul_d = (float *) mul_tensor->src[1]->data; + mul_src = mul_tensor->src[1]; + } else if(mul_tensor->src[1] == dst) { + mul_d = (float *) mul_tensor->src[0]->data; + mul_src = mul_tensor->src[0]; + } else { + GGML_ASSERT(false); + } + + float * dst_d = (float *) mul_tensor->data; + cudaStream_t stream = ctx.stream(); + + GGML_ASSERT(rms_norm_src->type == GGML_TYPE_F32); + GGML_ASSERT(dst->type == GGML_TYPE_F32); + GGML_ASSERT(mul_tensor->type == GGML_TYPE_F32); + GGML_ASSERT(eps >= 0.0f); + + const int64_t ne00 = rms_norm_src->ne[0]; + const int64_t ne01 = rms_norm_src->ne[1]; + const int64_t ne02 = rms_norm_src->ne[2]; + const int64_t ne03 = rms_norm_src->ne[3]; + + const size_t ts0 = ggml_type_size(rms_norm_src->type); + GGML_ASSERT(rms_norm_src->nb[0] == ts0); + const int64_t s01 = rms_norm_src->nb[1] / ts0; + const int64_t s02 = rms_norm_src->nb[2] / ts0; + const int64_t s03 = rms_norm_src->nb[3] / ts0; + + const size_t ts_mul = ggml_type_size(mul_src->type); + GGML_ASSERT(mul_src->nb[0] == ts_mul); + const int64_t mul_s01 = mul_src->nb[1] / ts_mul; + const int64_t mul_s02 = mul_src->nb[2] / ts_mul; + const int64_t mul_s03 = mul_src->nb[3] / ts_mul; + + const int mul_ncols = mul_src->ne[0]; + const int mul_nrows = mul_src->ne[1]; + const int mul_nchannels = mul_src->ne[2]; + const int mul_nsamples = mul_src->ne[3]; + + rms_norm_mul_f32_cuda(src0_d, mul_d, nullptr, dst_d, + ne00, ne01, ne02, ne03, + /*s00*/ s01, s02, s03, + /*mul_s00*/ mul_s01, mul_s02, mul_s03, + mul_ncols, mul_nrows, mul_nchannels, mul_nsamples, + /*add_s00*/ 0, 0, 0, + 0, 0, 0, 0, + eps, stream); +} + +void ggml_cuda_op_rms_norm_fused_add(ggml_backend_cuda_context & ctx, + ggml_tensor * dst, + ggml_tensor * mul_tensor, + ggml_tensor * add_tensor) { + const ggml_tensor * rms_norm_src = (ggml_tensor *) dst->src[0]; + float eps = 0.0f; + + memcpy(&eps, dst->op_params, sizeof(float)); + + const float * src0_d = (const float *) rms_norm_src->data; + const float * mul_d = nullptr; + const ggml_tensor * mul_src = nullptr; + + if (mul_tensor->src[0] == dst) { + mul_d = (float *) mul_tensor->src[1]->data; + mul_src = mul_tensor->src[1]; + } else if (mul_tensor->src[1] == dst) { + mul_d = (float *) mul_tensor->src[0]->data; + mul_src = mul_tensor->src[0]; + } else { + GGML_ASSERT(false); + } + + const float * add_d = nullptr; + const ggml_tensor * add_src = nullptr; + + if (add_tensor->src[0] == mul_tensor) { + add_d = (float *) add_tensor->src[1]->data; + add_src = add_tensor->src[1]; + } else if (add_tensor->src[1] == mul_tensor) { + add_d = (float *) add_tensor->src[0]->data; + add_src = add_tensor->src[0]; + } else { + GGML_ASSERT(false); + } + + float * dst_d = (float *) add_tensor->data; + cudaStream_t stream = ctx.stream(); + + GGML_ASSERT(rms_norm_src->type == GGML_TYPE_F32); + GGML_ASSERT(dst->type == GGML_TYPE_F32); + GGML_ASSERT(mul_tensor->type == GGML_TYPE_F32); + GGML_ASSERT(add_tensor->type == GGML_TYPE_F32); + GGML_ASSERT(eps >= 0.0f); + + const int64_t ne00 = rms_norm_src->ne[0]; + const int64_t ne01 = rms_norm_src->ne[1]; + const int64_t ne02 = rms_norm_src->ne[2]; + const int64_t ne03 = rms_norm_src->ne[3]; + + const size_t ts0 = ggml_type_size(rms_norm_src->type); + GGML_ASSERT(rms_norm_src->nb[0] == ts0); + const int64_t s01 = rms_norm_src->nb[1] / ts0; + const int64_t s02 = rms_norm_src->nb[2] / ts0; + const int64_t s03 = rms_norm_src->nb[3] / ts0; + + const size_t ts_mul = ggml_type_size(mul_src->type); + GGML_ASSERT(mul_src->nb[0] == ts_mul); + const int64_t mul_s01 = mul_src->nb[1] / ts_mul; + const int64_t mul_s02 = mul_src->nb[2] / ts_mul; + const int64_t mul_s03 = mul_src->nb[3] / ts_mul; + + const int mul_ncols = mul_src->ne[0]; + const int mul_nrows = mul_src->ne[1]; + const int mul_nchannels = mul_src->ne[2]; + const int mul_nsamples = mul_src->ne[3]; + + const size_t ts_add = ggml_type_size(add_src->type); + GGML_ASSERT(add_src->nb[0] == ts_add); + const int64_t add_s01 = add_src->nb[1] / ts_add; + const int64_t add_s02 = add_src->nb[2] / ts_add; + const int64_t add_s03 = add_src->nb[3] / ts_add; + + const int add_ncols = add_src->ne[0]; + const int add_nrows = add_src->ne[1]; + const int add_nchannels = add_src->ne[2]; + const int add_nsamples = add_src->ne[3]; + + rms_norm_mul_f32_cuda(src0_d, mul_d,add_d,dst_d, + ne00,ne01, ne02, ne03, + /*s00*/ s01, s02, s03, + /*mul_s00*/ mul_s01, mul_s02, mul_s03, + mul_ncols, mul_nrows, mul_nchannels, mul_nsamples, + /*add_s00*/ add_s01, add_s02, add_s03, + add_ncols, add_nrows, add_nchannels, add_nsamples, + eps, stream); +} + +void ggml_cuda_op_rms_norm_back(ggml_backend_cuda_context & ctx, ggml_tensor * dst) { + const ggml_tensor * grad = dst->src[0]; // gradients + const ggml_tensor * src0f = dst->src[1]; // src0 from forward pass + + const float * grad_d = (const float *) grad->data; + const float * src0f_d = (const float *) src0f->data; + float * dst_d = (float *) dst->data; + + cudaStream_t stream = ctx.stream(); + + GGML_ASSERT(ggml_is_contiguous(grad)); + + GGML_ASSERT( grad->type == GGML_TYPE_F32); + GGML_ASSERT(src0f->type == GGML_TYPE_F32); + GGML_ASSERT( dst->type == GGML_TYPE_F32); + + const int64_t ne00 = src0f->ne[0]; + const int64_t nrows = ggml_nrows(src0f); + + float eps; + memcpy(&eps, dst->op_params, sizeof(float)); + GGML_ASSERT(eps >= 0.0f); + + rms_norm_back_f32_cuda(grad_d, src0f_d, dst_d, ne00, nrows, eps, stream); +} + +void ggml_cuda_op_l2_norm(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); + + GGML_TENSOR_UNARY_OP_LOCALS; + + float eps; + memcpy(&eps, dst->op_params, sizeof(float)); + GGML_ASSERT(eps >= 0.0f); + + const size_t ts0 = ggml_type_size(src0->type); + GGML_ASSERT(nb00 == ts0); + const int64_t s01 = nb01 / ts0; + const int64_t s02 = nb02 / ts0; + const int64_t s03 = nb03 / ts0; + + l2_norm_f32_cuda(src0_d, dst_d, ne00, ne01, ne02, ne03, s01, s02, s03, eps, stream); +} |
