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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/wkv.cu | |
| download | llmnpc-b333b06772c89d96aacb5490d6a219fba7c09cc6.tar.gz | |
Engage!
Diffstat (limited to 'llama.cpp/ggml/src/ggml-cuda/wkv.cu')
| -rw-r--r-- | llama.cpp/ggml/src/ggml-cuda/wkv.cu | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/llama.cpp/ggml/src/ggml-cuda/wkv.cu b/llama.cpp/ggml/src/ggml-cuda/wkv.cu new file mode 100644 index 0000000..d2fced7 --- /dev/null +++ b/llama.cpp/ggml/src/ggml-cuda/wkv.cu @@ -0,0 +1,199 @@ +#include "common.cuh" +#include "wkv.cuh" + +template <int block_size> +static __global__ void rwkv_wkv_f32(const int B, const int T, const int C, const int H, const float * k, const float * v, const float * r, const float * tf, const float * td, const float * s, float * dst) { + const int tid = threadIdx.x; + const int bid = blockIdx.x; + + const int head_size = block_size; + const int batch_i = bid / H; + const int head_i = bid % H; + const int state_size = C * head_size; + const int n_seq_tokens = T / B; + + float state[head_size]; + __shared__ float _k[head_size], _r[head_size], _tf[head_size], _td[head_size]; + + #pragma unroll + for (int i = 0; i < head_size; i++) { + state[i] = s[batch_i * state_size + head_i * head_size * head_size + i * head_size + tid]; + } + + __syncthreads(); + _tf[tid] = tf[head_i * head_size + tid]; + __syncthreads(); + + for (int t = batch_i * n_seq_tokens * C + head_i * head_size + tid; t < (batch_i + 1) * n_seq_tokens * C + head_i * head_size + tid; t += C) { + __syncthreads(); + _k[tid] = k[t]; + _r[tid] = r[t]; + _td[tid] = td[t]; + __syncthreads(); + + const float _v = v[t]; + float y = 0; + for (int j = 0; j < head_size; j += 4) { + const float4& k = (float4&)(_k[j]); + const float4& r = (float4&)(_r[j]); + const float4& tf = (float4&)(_tf[j]); + const float4& td = (float4&)(_td[j]); + float4& s = (float4&)(state[j]); + float4 kv; + + kv.x = k.x * _v; + kv.y = k.y * _v; + kv.z = k.z * _v; + kv.w = k.w * _v; + + y += r.x * (tf.x * kv.x + s.x); + y += r.y * (tf.y * kv.y + s.y); + y += r.z * (tf.z * kv.z + s.z); + y += r.w * (tf.w * kv.w + s.w); + + s.x = s.x * td.x + kv.x; + s.y = s.y * td.y + kv.y; + s.z = s.z * td.z + kv.z; + s.w = s.w * td.w + kv.w; + } + dst[t] = y; + } + + #pragma unroll + for (int i = 0; i < head_size; i++) { + dst[T * C + batch_i * state_size + head_i * head_size * head_size + i * head_size + tid] = state[i]; + } +} + +template <int block_size> +static __global__ void rwkv_wkv7_f32(const int B, const int T, const int C, const int H, const float * r, const float * w, const float * k, const float * v, const float * a, const float * b, const float * s, float * dst) { + const int tid = threadIdx.x; + const int bid = blockIdx.x; + + const int head_size = block_size; + const int batch_i = bid / H; + const int head_i = bid % H; + const int state_size = C * head_size; + const int n_seq_tokens = T / B; + + float state[head_size]; + __shared__ float _r[head_size], _w[head_size], _k[head_size], _a[head_size], _b[head_size]; + +#ifndef GGML_USE_MUSA + #pragma unroll +#endif + for (int i = 0; i < head_size; i++) { + state[i] = s[batch_i * state_size + head_i * head_size * head_size + tid * head_size + i]; + } + + for (int t = batch_i * n_seq_tokens * C + head_i * head_size + tid; t < (batch_i + 1) * n_seq_tokens * C + head_i * head_size + tid; t += C) { + __syncthreads(); + _r[tid] = r[t]; + _w[tid] = w[t]; + _k[tid] = k[t]; + _a[tid] = a[t]; + _b[tid] = b[t]; + __syncthreads(); + + float sa = 0; + #pragma unroll + for (int j = 0; j < head_size; j += 4) + { + const float4& a = (float4&)(_a[j]); + const float4& s = (float4&)(state[j]); + sa += a.x * s.x; + sa += a.y * s.y; + sa += a.z * s.z; + sa += a.w * s.w; + } + + const float _v = v[t]; + float y = 0; + for (int j = 0; j < head_size; j += 4) { + const float4& r = (float4&)(_r[j]); + const float4& w = (float4&)(_w[j]); + const float4& k = (float4&)(_k[j]); + const float4& b = (float4&)(_b[j]); + float4& s = (float4&)(state[j]); + float4 kv; + + kv.x = k.x * _v; + kv.y = k.y * _v; + kv.z = k.z * _v; + kv.w = k.w * _v; + + s.x = s.x * w.x + kv.x + sa * b.x; + s.y = s.y * w.y + kv.y + sa * b.y; + s.z = s.z * w.z + kv.z + sa * b.z; + s.w = s.w * w.w + kv.w + sa * b.w; + + y += s.x * r.x; + y += s.y * r.y; + y += s.z * r.z; + y += s.w * r.w; + } + dst[t] = y; + } + + #pragma unroll + for (int i = 0; i < head_size; i++) { + dst[T * C + batch_i * state_size + head_i * head_size * head_size + tid * head_size + i] = state[i]; + } +} + +void ggml_cuda_op_rwkv_wkv6(ggml_backend_cuda_context & ctx, ggml_tensor * dst) { + const float * k_d = (const float *)dst->src[0]->data; + const float * v_d = (const float *)dst->src[1]->data; + const float * r_d = (const float *)dst->src[2]->data; + const float * tf_d = (const float *)dst->src[3]->data; + const float * td_d = (const float *)dst->src[4]->data; + const float * s_d = (const float *)dst->src[5]->data; + + const int64_t B = dst->src[5]->ne[1]; + const int64_t T = dst->src[0]->ne[2]; + const int64_t C = dst->ne[0]; + const int64_t H = dst->src[0]->ne[1]; + + float * dst_d = (float *)dst->data; + + cudaStream_t stream = ctx.stream(); + + GGML_ASSERT(dst->src[5]->type == GGML_TYPE_F32); + GGML_ASSERT(C % H == 0); + GGML_ASSERT(C / H == CUDA_WKV_BLOCK_SIZE || C / H == CUDA_WKV_BLOCK_SIZE * 2); + + if (C / H == CUDA_WKV_BLOCK_SIZE) { + rwkv_wkv_f32<CUDA_WKV_BLOCK_SIZE><<<B * H, C / H, 0, stream>>>(B, T, C, H, k_d, v_d, r_d, tf_d, td_d, s_d, dst_d); + } else { + rwkv_wkv_f32<CUDA_WKV_BLOCK_SIZE * 2><<<B * H, C / H, 0, stream>>>(B, T, C, H, k_d, v_d, r_d, tf_d, td_d, s_d, dst_d); + } +} + +void ggml_cuda_op_rwkv_wkv7(ggml_backend_cuda_context & ctx, ggml_tensor * dst) { + const float * r_d = (const float *)dst->src[0]->data; + const float * w_d = (const float *)dst->src[1]->data; + const float * k_d = (const float *)dst->src[2]->data; + const float * v_d = (const float *)dst->src[3]->data; + const float * a_d = (const float *)dst->src[4]->data; + const float * b_d = (const float *)dst->src[5]->data; + const float * s_d = (const float *)dst->src[6]->data; + + const int64_t B = dst->src[6]->ne[1]; + const int64_t T = dst->src[0]->ne[2]; + const int64_t C = dst->ne[0]; + const int64_t H = dst->src[0]->ne[1]; + + float * dst_d = (float *)dst->data; + + cudaStream_t stream = ctx.stream(); + + GGML_ASSERT(dst->src[6]->type == GGML_TYPE_F32); + GGML_ASSERT(C % H == 0); + GGML_ASSERT(C / H == CUDA_WKV_BLOCK_SIZE || C / H == CUDA_WKV_BLOCK_SIZE * 2); + + if (C / H == CUDA_WKV_BLOCK_SIZE) { + rwkv_wkv7_f32<CUDA_WKV_BLOCK_SIZE><<<B * H, C / H, 0, stream>>>(B, T, C, H, r_d, w_d, k_d, v_d, a_d, b_d, s_d, dst_d); + } else { + rwkv_wkv7_f32<CUDA_WKV_BLOCK_SIZE * 2><<<B * H, C / H, 0, stream>>>(B, T, C, H, r_d, w_d, k_d, v_d, a_d, b_d, s_d, dst_d); + } +} |
