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RWKV v6: RWKV_WKV op CUDA implementation (#9454)

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* ggml: CUDA unary op EXP

Signed-off-by: Molly Sophia <mollysophia379@gmail.com>

* ggml: rwkv_wkv op CUDA impl

Signed-off-by: Molly Sophia <mollysophia379@gmail.com>

---------

Signed-off-by: Molly Sophia <mollysophia379@gmail.com>
This commit is contained in:
Molly Sophia 2024-09-22 10:29:12 +08:00 committed by GitHub
parent d09770cae7
commit 2a63caaa69
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6 changed files with 168 additions and 0 deletions
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8
ggml/src/ggml-cuda.cu
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@ -34,6 +34,7 @@
#include "ggml-cuda/tsembd.cuh"
#include "ggml-cuda/unary.cuh"
#include "ggml-cuda/upscale.cuh"
#include "ggml-cuda/rwkv-wkv.cuh"
#include <algorithm>
#include <array>
@ -2243,6 +2244,9 @@ static bool ggml_cuda_compute_forward(ggml_backend_cuda_context & ctx, struct gg
case GGML_UNARY_OP_HARDSWISH:
ggml_cuda_op_hardswish(ctx, dst);
break;
case GGML_UNARY_OP_EXP:
ggml_cuda_op_exp(ctx, dst);
break;
default:
return false;
}
@ -2345,6 +2349,8 @@ static bool ggml_cuda_compute_forward(ggml_backend_cuda_context & ctx, struct gg
case GGML_OP_CROSS_ENTROPY_LOSS:
ggml_cuda_cross_entropy_loss(ctx, dst);
break;
case GGML_OP_RWKV_WKV:
ggml_cuda_op_rwkv_wkv(ctx, dst);
case GGML_OP_CROSS_ENTROPY_LOSS_BACK:
ggml_cuda_cross_entropy_loss_back(ctx, dst);
break;
@ -2806,6 +2812,7 @@ GGML_CALL static bool ggml_backend_cuda_supports_op(ggml_backend_t backend, cons
case GGML_UNARY_OP_HARDSWISH:
case GGML_UNARY_OP_GELU_QUICK:
case GGML_UNARY_OP_TANH:
case GGML_UNARY_OP_EXP:
return ggml_is_contiguous(op->src[0]);
default:
return false;
@ -2967,6 +2974,7 @@ GGML_CALL static bool ggml_backend_cuda_supports_op(ggml_backend_t backend, cons
case GGML_OP_ARANGE:
case GGML_OP_TIMESTEP_EMBEDDING:
case GGML_OP_LEAKY_RELU:
case GGML_OP_RWKV_WKV:
return true;
case GGML_OP_FLASH_ATTN_EXT:
#if defined(GGML_USE_HIPBLAS) && defined(__HIP_PLATFORM_AMD__)

89
ggml/src/ggml-cuda/rwkv-wkv.cu Normal file
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@ -0,0 +1,89 @@
#include "common.cuh"
#include "rwkv-wkv.cuh"
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 = CUDA_WKV_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];
}
}
void ggml_cuda_op_rwkv_wkv(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[3];
const int64_t C = dst->ne[0];
const int64_t H = dst->src[0]->ne[2];
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);
rwkv_wkv_f32<<<B * H, C / H, 0, stream>>>(B, T, C, H, k_d, v_d, r_d, tf_d, td_d, s_d, dst_d);
}

5
ggml/src/ggml-cuda/rwkv-wkv.cuh Normal file
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@ -0,0 +1,5 @@
#include "common.cuh"
#define CUDA_WKV_BLOCK_SIZE 64
void ggml_cuda_op_rwkv_wkv(ggml_backend_cuda_context & ctx, ggml_tensor * dst);

28
ggml/src/ggml-cuda/unary.cu
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@ -95,6 +95,15 @@ static __global__ void hardswish_f32(const float * x, float * dst, const int k)
dst[i] = x[i] * fminf(1.0f, fmaxf(0.0f, (x[i] + 3.0f) / 6.0f));
}
static __global__ void exp_f32(const float * x, float * dst, const int k) {
const int i = blockDim.x*blockIdx.x + threadIdx.x;
if (i >= k) {
return;
}
dst[i] = expf(x[i]);
}
static __global__ void leaky_relu_f32(const float * x, float * dst, const int k, const float negative_slope) {
const int i = blockDim.x*blockIdx.x + threadIdx.x;
if (i >= k) {
@ -189,6 +198,11 @@ static void hardswish_f32_cuda(const float * x, float * dst, const int k, cudaSt
hardswish_f32<<<num_blocks, CUDA_HARDSWISH_BLOCK_SIZE, 0, stream>>>(x, dst, k);
}
static void exp_f32_cuda(const float * x, float * dst, const int k, cudaStream_t stream) {
const int num_blocks = (k + CUDA_EXP_BLOCK_SIZE - 1) / CUDA_EXP_BLOCK_SIZE;
exp_f32<<<num_blocks, CUDA_EXP_BLOCK_SIZE, 0, stream>>>(x, dst, k);
}
static void leaky_relu_f32_cuda(const float * x, float * dst, const int k, const float negative_slope, cudaStream_t stream) {
const int num_blocks = (k + CUDA_RELU_BLOCK_SIZE - 1) / CUDA_RELU_BLOCK_SIZE;
leaky_relu_f32<<<num_blocks, CUDA_RELU_BLOCK_SIZE, 0, stream>>>(x, dst, k, negative_slope);
@ -354,6 +368,20 @@ void ggml_cuda_op_hardswish(ggml_backend_cuda_context & ctx, ggml_tensor * dst)
hardswish_f32_cuda(src0_d, dst_d, ggml_nelements(src0), stream);
}
void ggml_cuda_op_exp(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(ggml_is_contiguous(src0));
GGML_ASSERT(src0->type == GGML_TYPE_F32);
GGML_ASSERT( dst->type == GGML_TYPE_F32);
exp_f32_cuda(src0_d, dst_d, ggml_nelements(src0), stream);
}
void ggml_cuda_op_leaky_relu(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
const ggml_tensor * src0 = dst->src[0];
const float * src0_d = (const float *)src0->data;

3
ggml/src/ggml-cuda/unary.cuh
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@ -8,6 +8,7 @@
#define CUDA_RELU_BLOCK_SIZE 256
#define CUDA_SIGMOID_BLOCK_SIZE 256
#define CUDA_HARDSIGMOID_BLOCK_SIZE 256
#define CUDA_EXP_BLOCK_SIZE 256
#define CUDA_HARDSWISH_BLOCK_SIZE 256
#define CUDA_SQR_BLOCK_SIZE 256
#define CUDA_SQRT_BLOCK_SIZE 256
@ -32,6 +33,8 @@ void ggml_cuda_op_sigmoid(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_hardsigmoid(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_exp(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_hardswish(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_leaky_relu(ggml_backend_cuda_context & ctx, ggml_tensor * dst);

35
tests/test-backend-ops.cpp
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@ -1543,6 +1543,36 @@ struct test_ssm_scan : public test_case {
}
};
// GGML_OP_RWKV_WKV
struct test_rwkv_wkv : public test_case {
const ggml_type type;
const int64_t head_count;
const int64_t head_size;
const int64_t n_seq_tokens;
const int64_t n_seqs;
std::string vars() override {
return VARS_TO_STR5(type, head_count, head_size, n_seq_tokens, n_seqs);
}
test_rwkv_wkv(ggml_type type = GGML_TYPE_F32,
int64_t head_count = 32, int64_t head_size = 64, int64_t n_seq_tokens = 32, int64_t n_seqs = 32)
: type(type), head_count(head_count), head_size(head_size), n_seq_tokens(n_seq_tokens), n_seqs(n_seqs) {}
ggml_tensor * build_graph(ggml_context * ctx) override {
const int64_t n_tokens = n_seq_tokens * n_seqs;
ggml_tensor * r = ggml_new_tensor(ctx, type, 4, std::vector<int64_t>{ 1, head_size, head_count, n_tokens }.data());
ggml_tensor * k = ggml_new_tensor(ctx, type, 4, std::vector<int64_t>{ head_size, 1, head_count, n_tokens }.data());
ggml_tensor * v = ggml_new_tensor(ctx, type, 4, std::vector<int64_t>{ 1, head_size, head_count, n_tokens }.data());
ggml_tensor * tf = ggml_new_tensor(ctx, type, 2, std::vector<int64_t>{ head_size, head_count }.data());
ggml_tensor * td = ggml_new_tensor(ctx, type, 4, std::vector<int64_t>{ 1, head_size, head_count, n_tokens }.data());
ggml_tensor * s = ggml_new_tensor(ctx, type, 2, std::vector<int64_t>{ head_size * head_size * head_count, n_seqs }.data());
ggml_tensor * out = ggml_rwkv_wkv(ctx, k, v, r, tf, td, s);
return out;
}
};
// GGML_OP_MUL_MAT
struct test_mul_mat : public test_case {
const ggml_type type_a;
@ -3337,6 +3367,11 @@ static bool test_backend(ggml_backend_t backend, test_mode mode, const char * op
test_cases.emplace_back(new test_ssm_scan(GGML_TYPE_F32, 16, 1024, 32, 4));
test_cases.emplace_back(new test_rwkv_wkv(GGML_TYPE_F32, 32, 64, 1, 1));
test_cases.emplace_back(new test_rwkv_wkv(GGML_TYPE_F32, 32, 64, 32, 1));
test_cases.emplace_back(new test_rwkv_wkv(GGML_TYPE_F32, 32, 64, 32, 4));
test_cases.emplace_back(new test_rwkv_wkv(GGML_TYPE_F32, 32, 64, 128, 4));
#if 1
for (ggml_type type_a : base_types) {
for (ggml_type type_b : {GGML_TYPE_F32, GGML_TYPE_F16}) {