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CUDA: fuse adds, fuse add with rms norm (#15631)

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* CUDA: fused add with rms_norm_mul

* Non-broadcast fuse works

* Add fused adds

* format

* Remove n_fuse from template params

* Address review comments

* Move template inside binbcast
This commit is contained in:
Aman Gupta
2025-08-29 11:35:58 +08:00
committed by GitHub
parent e8d99dd0b6
commit 009b709d6e
5 changed files with 501 additions and 190 deletions
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415
ggml/src/ggml-cuda/binbcast.cu
View File

@@ -1,5 +1,6 @@
#include "binbcast.cuh"
#include <cstdint>
#include <utility>
static __device__ __forceinline__ float op_repeat(const float a, const float b) {
return b;
@@ -22,13 +23,16 @@ static __device__ __forceinline__ float op_div(const float a, const float b) {
return a / b;
}
template<float (*bin_op)(const float, const float), typename src0_t, typename src1_t, typename dst_t>
template <float (*bin_op)(const float, const float), typename src0_t, typename src1_t, typename dst_t, typename... src1_ptrs>
static __global__ void k_bin_bcast(const src0_t * src0, const src1_t * src1, dst_t * dst,
int ne0, int ne1, int ne2, int ne3,
int ne10, int ne11, int ne12, int ne13,
/*int s0, */ int s1, int s2, int s3,
/*int s00,*/ int s01, int s02, int s03,
/*int s10,*/ int s11, int s12, int s13) {
const int ne0, const int ne1, const int ne2, const int ne3,
const int ne10, const int ne11, const int ne12, const int ne13,
/*int s0, */ const int s1, const int s2, const int s3,
/*int s00,*/ const int s01, const int s02, const int s03,
/*int s10,*/ const int s11, const int s12, const int s13,
src1_ptrs... src1s) {
const int i0s = blockDim.x*blockIdx.x + threadIdx.x;
const int i1 = (blockDim.y*blockIdx.y + threadIdx.y);
const int i2 = (blockDim.z*blockIdx.z + threadIdx.z) / ne3;
@@ -46,24 +50,27 @@ static __global__ void k_bin_bcast(const src0_t * src0, const src1_t * src1, dst
const size_t i_src1 = i13*s13 + i12*s12 + i11*s11;
const size_t i_dst = i3*s3 + i2*s2 + i1*s1;
const src0_t * src0_row = src0 + i_src0;
const src1_t * src1_row = src1 + i_src1;
const src0_t * src0_row = src0 ? (src0 + i_src0) : nullptr;
dst_t * dst_row = dst + i_dst;
for (int i0 = i0s; i0 < ne0; i0 += blockDim.x*gridDim.x) {
const int i10 = i0 % ne10;
dst_row[i0] = (dst_t)bin_op(src0 ? (float)src0_row[i0] : 0.0f, (float)src1_row[i10]);
float result = src0_row ? (float) src0_row[i0] : 0.0f;
result = (..., (result = bin_op(result, (float)src1s[i_src1 + i10])));
dst_row[i0] = (dst_t) result;
}
}
template<float (*bin_op)(const float, const float), typename src0_t, typename src1_t, typename dst_t>
static __global__ void k_bin_bcast_unravel(const src0_t * src0, const src1_t * src1, dst_t * dst,
int ne0, int ne1, int ne2, int ne3,
int ne10, int ne11, int ne12, int ne13,
/*int s0, */ int s1, int s2, int s3,
/*int s00,*/ int s01, int s02, int s03,
/*int s10,*/ int s11, int s12, int s13) {
template <float (*bin_op)(const float, const float), typename src0_t, typename src1_t, typename dst_t, typename... src1_ptrs>
static __global__ void k_bin_bcast_unravel(const src0_t * src0, const src1_t * src1, dst_t * dst,
const int ne0, const int ne1, const int ne2,const int ne3,
const int ne10, const int ne11, const int ne12, const int ne13,
/*int s0, */ const int s1, const int s2, const int s3,
/*int s00,*/ const int s01, const int s02, const int s03,
/*int s10,*/ const int s11, const int s12, const int s13,
src1_ptrs ... src1s) {
const int i = blockDim.x*blockIdx.x + threadIdx.x;
const int i3 = i/(ne2*ne1*ne0);
@@ -83,12 +90,166 @@ static __global__ void k_bin_bcast_unravel(const src0_t * src0, const src1_t * s
const size_t i_src1 = i13*s13 + i12*s12 + i11*s11;
const size_t i_dst = i3*s3 + i2*s2 + i1*s1;
const src0_t * src0_row = src0 + i_src0;
const src1_t * src1_row = src1 + i_src1;
const src0_t * src0_row = src0 ? (src0 + i_src0) : nullptr;
dst_t * dst_row = dst + i_dst;
const int i10 = i0 % ne10;
dst_row[i0] = (dst_t)bin_op(src0 ? (float)src0_row[i0] : 0.0f, (float)src1_row[i10]);
float result = src0_row ? (float) src0_row[i0] : 0.0f;
result = (..., (result = bin_op(result, (float)src1s[i_src1 + i10])));
dst_row[i0] = (dst_t) result;
}
template <float (*bin_op)(const float, const float), typename src0_t, typename src1_t, typename dst_t, size_t... I>
static void launch_bin_bcast_pack(const ggml_tensor * src0, const ggml_tensor * src1, ggml_tensor * dst,
const src0_t * src0_dd, const src1_t * src1_dd, dst_t * dst_dd,
cudaStream_t stream, std::index_sequence<I...>) {
GGML_TENSOR_BINARY_OP_LOCALS
int nr0 = ne10 / ne0;
int nr1 = ne11 / ne1;
int nr2 = ne12 / ne2;
int nr3 = ne13 / ne3;
int nr[4] = { nr0, nr1, nr2, nr3 };
int64_t cne[] = { ne0, ne1, ne2, ne3 };
int64_t cne0[] = { ne00, ne01, ne02, ne03 };
int64_t cne1[] = { ne10, ne11, ne12, ne13 };
size_t cnb[] = { nb0, nb1, nb2, nb3 };
size_t cnb0[] = { nb00, nb01, nb02, nb03 };
size_t cnb1[] = { nb10, nb11, nb12, nb13 };
auto collapse = [](int64_t cne[]) {
cne[0] *= cne[1];
cne[1] = cne[2];
cne[2] = cne[3];
cne[3] = 1;
};
auto collapse_nb = [](size_t cnb[], const int64_t cne[]) {
cnb[1] *= cne[1];
cnb[2] *= cne[2];
cnb[3] *= cne[3];
};
if (ggml_is_contiguous(src0) && ggml_is_contiguous(src1) && ggml_is_contiguous(dst)) {
for (int i = 0; i < 4; i++) {
if (nr[i] != 1) {
break;
}
if (i > 0) {
collapse_nb(cnb, cne);
collapse_nb(cnb0, cne0);
collapse_nb(cnb1, cne1);
collapse(cne);
collapse(cne0);
collapse(cne1);
}
}
}
{
int64_t ne0 = cne[0];
int64_t ne1 = cne[1];
int64_t ne2 = cne[2];
int64_t ne3 = cne[3];
//int64_t ne00 = cne0[0]; GGML_UNUSED(ne00);
//int64_t ne01 = cne0[1]; GGML_UNUSED(ne01);
//int64_t ne02 = cne0[2]; GGML_UNUSED(ne02);
//int64_t ne03 = cne0[3]; GGML_UNUSED(ne03);
int64_t ne10 = cne1[0];
int64_t ne11 = cne1[1];
int64_t ne12 = cne1[2];
int64_t ne13 = cne1[3];
size_t nb0 = cnb[0];
size_t nb1 = cnb[1];
size_t nb2 = cnb[2];
size_t nb3 = cnb[3];
size_t nb00 = cnb0[0];
size_t nb01 = cnb0[1];
size_t nb02 = cnb0[2];
size_t nb03 = cnb0[3];
size_t nb10 = cnb1[0];
size_t nb11 = cnb1[1];
size_t nb12 = cnb1[2];
size_t nb13 = cnb1[3];
size_t s0 = nb0 / sizeof(dst_t);
size_t s1 = nb1 / sizeof(dst_t);
size_t s2 = nb2 / sizeof(dst_t);
size_t s3 = nb3 / sizeof(dst_t);
size_t s10 = nb10 / sizeof(src1_t);
size_t s11 = nb11 / sizeof(src1_t);
size_t s12 = nb12 / sizeof(src1_t);
size_t s13 = nb13 / sizeof(src1_t);
size_t s00 = nb00 / sizeof(src0_t);
size_t s01 = nb01 / sizeof(src0_t);
size_t s02 = nb02 / sizeof(src0_t);
size_t s03 = nb03 / sizeof(src0_t);
GGML_ASSERT(nb0 % sizeof(dst_t) == 0);
GGML_ASSERT(nb1 % sizeof(dst_t) == 0);
GGML_ASSERT(nb2 % sizeof(dst_t) == 0);
GGML_ASSERT(nb3 % sizeof(dst_t) == 0);
GGML_ASSERT(nb00 % sizeof(src0_t) == 0);
GGML_ASSERT(nb01 % sizeof(src0_t) == 0);
GGML_ASSERT(nb02 % sizeof(src0_t) == 0);
GGML_ASSERT(nb03 % sizeof(src0_t) == 0);
GGML_ASSERT(nb10 % sizeof(src1_t) == 0);
GGML_ASSERT(nb11 % sizeof(src1_t) == 0);
GGML_ASSERT(nb12 % sizeof(src1_t) == 0);
GGML_ASSERT(nb13 % sizeof(src1_t) == 0);
GGML_ASSERT(s0 == 1);
GGML_ASSERT(s00 == 1);
GGML_ASSERT(s10 == 1);
const int block_size = 128;
int64_t hne0 = std::max(ne0 / 2LL, 1LL);
dim3 block_dims;
block_dims.x = std::min<unsigned int>(hne0, block_size);
block_dims.y = std::min<unsigned int>(ne1, block_size / block_dims.x);
block_dims.z = std::min(std::min<unsigned int>(ne2 * ne3, block_size / block_dims.x / block_dims.y), 64U);
dim3 block_nums((hne0 + block_dims.x - 1) / block_dims.x,
(ne1 + block_dims.y - 1) / block_dims.y,
(ne2 * ne3 + block_dims.z - 1) / block_dims.z);
if (block_nums.z > 65535) {
int block_num = (ne0 * ne1 * ne2 * ne3 + block_size - 1) / block_size;
k_bin_bcast_unravel<bin_op, src0_t, src1_t, dst_t>
<<<block_num, block_size, 0, stream>>>(src0_dd, src1_dd, dst_dd,
ne0, ne1, ne2, ne3,
ne10, ne11, ne12, ne13,
/* s0, */ s1, s2, s3,
/* s00,*/ s01, s02, s03,
/* s10,*/ s11, s12,s13,
(const src1_t *) dst->src[I + 1]->data...);
} else {
k_bin_bcast<bin_op, src0_t, src1_t, dst_t>
<<<block_nums, block_dims, 0, stream>>>(src0_dd, src1_dd, dst_dd,
ne0, ne1, ne2, ne3,
ne10, ne11, ne12, ne13,
/* s0, */ s1, s2, s3,
/* s00,*/ s01, s02, s03,
/* s10,*/ s11, s12,s13,
(const src1_t *) dst->src[I + 1]->data...);
}
}
}
template <typename T>
@@ -120,160 +281,14 @@ static __global__ void k_repeat_back(
dst[tid3*ne2*ne1*ne0 + tid2*ne1*ne0 + tid1*ne0 + tid0] = sum;
}
template<float (*bin_op)(const float, const float)>
template <float (*bin_op)(const float, const float), int n_fuse = 1>
struct bin_bcast_cuda {
template<typename src0_t, typename src1_t, typename dst_t>
void operator()(const struct ggml_tensor * src0, const struct ggml_tensor * src1, struct ggml_tensor * dst,
const src0_t * src0_dd, const src1_t * src1_dd, dst_t * dst_dd,
cudaStream_t stream) {
GGML_TENSOR_BINARY_OP_LOCALS
int nr0 = ne10/ne0;
int nr1 = ne11/ne1;
int nr2 = ne12/ne2;
int nr3 = ne13/ne3;
int nr[4] = { nr0, nr1, nr2, nr3 };
// collapse dimensions until first broadcast dimension
int64_t cne[] = {ne0, ne1, ne2, ne3};
int64_t cne0[] = {ne00, ne01, ne02, ne03};
int64_t cne1[] = {ne10, ne11, ne12, ne13};
size_t cnb[] = {nb0, nb1, nb2, nb3};
size_t cnb0[] = {nb00, nb01, nb02, nb03};
size_t cnb1[] = {nb10, nb11, nb12, nb13};
auto collapse = [](int64_t cne[]) {
cne[0] *= cne[1];
cne[1] = cne[2];
cne[2] = cne[3];
cne[3] = 1;
};
auto collapse_nb = [](size_t cnb[], const int64_t cne[]) {
cnb[1] *= cne[1];
cnb[2] *= cne[2];
cnb[3] *= cne[3];
};
if (ggml_is_contiguous(src0) && ggml_is_contiguous(src1) && ggml_is_contiguous(dst)) {
for (int i = 0; i < 4; i++) {
if (nr[i] != 1) {
break;
}
if (i > 0) {
collapse_nb(cnb, cne);
collapse_nb(cnb0, cne0);
collapse_nb(cnb1, cne1);
collapse(cne);
collapse(cne0);
collapse(cne1);
}
}
}
{
int64_t ne0 = cne[0];
int64_t ne1 = cne[1];
int64_t ne2 = cne[2];
int64_t ne3 = cne[3];
//int64_t ne00 = cne0[0]; GGML_UNUSED(ne00);
//int64_t ne01 = cne0[1]; GGML_UNUSED(ne01);
//int64_t ne02 = cne0[2]; GGML_UNUSED(ne02);
//int64_t ne03 = cne0[3]; GGML_UNUSED(ne03);
int64_t ne10 = cne1[0];
int64_t ne11 = cne1[1];
int64_t ne12 = cne1[2];
int64_t ne13 = cne1[3];
size_t nb0 = cnb[0];
size_t nb1 = cnb[1];
size_t nb2 = cnb[2];
size_t nb3 = cnb[3];
size_t nb00 = cnb0[0];
size_t nb01 = cnb0[1];
size_t nb02 = cnb0[2];
size_t nb03 = cnb0[3];
size_t nb10 = cnb1[0];
size_t nb11 = cnb1[1];
size_t nb12 = cnb1[2];
size_t nb13 = cnb1[3];
size_t s0 = nb0 / sizeof(dst_t);
size_t s1 = nb1 / sizeof(dst_t);
size_t s2 = nb2 / sizeof(dst_t);
size_t s3 = nb3 / sizeof(dst_t);
size_t s10 = nb10 / sizeof(src1_t);
size_t s11 = nb11 / sizeof(src1_t);
size_t s12 = nb12 / sizeof(src1_t);
size_t s13 = nb13 / sizeof(src1_t);
size_t s00 = nb00 / sizeof(src0_t);
size_t s01 = nb01 / sizeof(src0_t);
size_t s02 = nb02 / sizeof(src0_t);
size_t s03 = nb03 / sizeof(src0_t);
GGML_ASSERT(nb0 % sizeof(dst_t) == 0);
GGML_ASSERT(nb1 % sizeof(dst_t) == 0);
GGML_ASSERT(nb2 % sizeof(dst_t) == 0);
GGML_ASSERT(nb3 % sizeof(dst_t) == 0);
GGML_ASSERT(nb00 % sizeof(src0_t) == 0);
GGML_ASSERT(nb01 % sizeof(src0_t) == 0);
GGML_ASSERT(nb02 % sizeof(src0_t) == 0);
GGML_ASSERT(nb03 % sizeof(src0_t) == 0);
GGML_ASSERT(nb10 % sizeof(src1_t) == 0);
GGML_ASSERT(nb11 % sizeof(src1_t) == 0);
GGML_ASSERT(nb12 % sizeof(src1_t) == 0);
GGML_ASSERT(nb13 % sizeof(src1_t) == 0);
GGML_ASSERT(s0 == 1);
GGML_ASSERT(s00 == 1);
GGML_ASSERT(s10 == 1);
const int block_size = 128;
int64_t hne0 = std::max(ne0/2LL, 1LL);
dim3 block_dims;
block_dims.x = std::min<unsigned int>(hne0, block_size);
block_dims.y = std::min<unsigned int>(ne1, block_size / block_dims.x);
block_dims.z = std::min(std::min<unsigned int>(ne2*ne3, block_size / block_dims.x / block_dims.y), 64U);
dim3 block_nums(
(hne0 + block_dims.x - 1) / block_dims.x,
(ne1 + block_dims.y - 1) / block_dims.y,
(ne2*ne3 + block_dims.z - 1) / block_dims.z
);
if (block_nums.z > 65535) {
// this is the maximum number of blocks in z dimension, fallback to 1D grid kernel
int block_num = (ne0*ne1*ne2*ne3 + block_size - 1) / block_size;
k_bin_bcast_unravel<bin_op><<<block_num, block_size, 0, stream>>>(
src0_dd, src1_dd, dst_dd,
ne0, ne1, ne2, ne3,
ne10, ne11, ne12, ne13,
/* s0, */ s1, s2, s3,
/* s00, */ s01, s02, s03,
/* s10, */ s11, s12, s13);
} else {
k_bin_bcast<bin_op><<<block_nums, block_dims, 0, stream>>>(
src0_dd, src1_dd, dst_dd,
ne0, ne1, ne2, ne3,
ne10, ne11, ne12, ne13,
/* s0, */ s1, s2, s3,
/* s00, */ s01, s02, s03,
/* s10, */ s11, s12, s13);
}
}
launch_bin_bcast_pack<bin_op, src0_t, src1_t, dst_t>(
src0, src1, dst, src0_dd, src1_dd, dst_dd, stream, std::make_index_sequence<n_fuse>{});
}
};
@@ -331,6 +346,68 @@ void ggml_cuda_op_div(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
ggml_cuda_op_bin_bcast<bin_bcast_cuda<op_div>>(dst->src[0], dst->src[1], dst, dst->src[0]->data, dst->src[1]->data, dst->data, ctx.stream());
}
template <float (*op)(const float, const float), int n_fuse>
static void ggml_cuda_op_fused_binbcast_impl(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
cudaStream_t stream = ctx.stream();
const ggml_tensor * src0 = dst->src[0];
const ggml_tensor * src1 = dst->src[1];
if (src0->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F32) {
launch_bin_bcast_pack<op, float, float, float>(src0, src1, dst,
(const float *) src0->data, (const float *) src1->data, (float *) dst->data,
stream, std::make_index_sequence<n_fuse>{});
} else if (src0->type == GGML_TYPE_F16 && src1->type == GGML_TYPE_F16 && dst->type == GGML_TYPE_F16) {
launch_bin_bcast_pack<op, half, half, half>(src0, src1, dst,
(const half *) src0->data, (const half *) src1->data, (half *) dst->data,
stream, std::make_index_sequence<n_fuse>{});
} else if (src0->type == GGML_TYPE_F16 && src1->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F16) {
launch_bin_bcast_pack<op, half, float, half>(src0, src1, dst,
(const half *) src0->data, (const float *) src1->data, (half *) dst->data,
stream, std::make_index_sequence<n_fuse>{});
} else if (src0->type == GGML_TYPE_F16 && dst->type == GGML_TYPE_F32) {
launch_bin_bcast_pack<op, half, float, float>(src0, src1, dst,
(const half *) src0->data, (const float *) src1->data, (float *) dst->data,
stream, std::make_index_sequence<n_fuse>{});
} else {
fprintf(stderr,
"%s: unsupported types for fusion: dst: %s, src0: %s, src1: %s\n",
__func__, ggml_type_name(dst->type), ggml_type_name(src0->type), ggml_type_name(src1->type));
GGML_ABORT("fatal error");
}
}
void ggml_cuda_op_fused_add(ggml_backend_cuda_context & ctx, ggml_tensor * dst, int n_fuse) {
GGML_ASSERT(2 <= n_fuse && n_fuse <= 8);
switch (n_fuse) {
case 2:
ggml_cuda_op_fused_binbcast_impl<op_add, 2>(ctx, dst);
break;
case 3:
ggml_cuda_op_fused_binbcast_impl<op_add, 3>(ctx, dst);
break;
case 4:
ggml_cuda_op_fused_binbcast_impl<op_add, 4>(ctx, dst);
break;
case 5:
ggml_cuda_op_fused_binbcast_impl<op_add, 5>(ctx, dst);
break;
case 6:
ggml_cuda_op_fused_binbcast_impl<op_add, 6>(ctx, dst);
break;
case 7:
ggml_cuda_op_fused_binbcast_impl<op_add, 7>(ctx, dst);
break;
case 8:
ggml_cuda_op_fused_binbcast_impl<op_add, 8>(ctx, dst);
break;
default:
GGML_ASSERT(false && "Unsupported n_fuse value");
}
}
void ggml_cuda_op_repeat_back(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
const ggml_tensor * src0 = dst->src[0];

2
ggml/src/ggml-cuda/binbcast.cuh
View File

@@ -7,3 +7,5 @@ void ggml_cuda_op_mul(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_div(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_repeat_back(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_fused_add(ggml_backend_cuda_context & ctx, ggml_tensor * dst, int n_fuse);

58
ggml/src/ggml-cuda/ggml-cuda.cu
View File

@@ -2821,9 +2821,14 @@ static bool ggml_cuda_can_fuse(const struct ggml_cgraph * cgraph, int node_idx,
return false;
}
if (ops.size() == 2 && ops.begin()[0] == GGML_OP_RMS_NORM && ops.begin()[1] == GGML_OP_MUL) {
if ((ops.size() == 2 || ops.size() == 3) && ops.begin()[0] == GGML_OP_RMS_NORM && ops.begin()[1] == GGML_OP_MUL) {
const ggml_tensor *rms_norm = cgraph->nodes[node_idx];
const ggml_tensor *mul = cgraph->nodes[node_idx+1];
const ggml_tensor *add = nullptr;
if (ops.size() == 3 && ops.begin()[2] == GGML_OP_ADD) {
add = cgraph->nodes[node_idx+1];
}
GGML_ASSERT(rms_norm->src[0]->type == GGML_TYPE_F32);
GGML_ASSERT(rms_norm->type == GGML_TYPE_F32);
@@ -2835,6 +2840,12 @@ static bool ggml_cuda_can_fuse(const struct ggml_cgraph * cgraph, int node_idx,
return false;
}
if (add && (add->src[0]->type != GGML_TYPE_F32 ||
add->src[1]->type != GGML_TYPE_F32 ||
add->type != GGML_TYPE_F32) ) {
return false;
}
//if rms norm is the B operand, then we don't handle broadcast
if (rms_norm == mul->src[1] && !ggml_are_same_shape(mul->src[0], rms_norm->src[1])) {
return false;
@@ -2845,6 +2856,10 @@ static bool ggml_cuda_can_fuse(const struct ggml_cgraph * cgraph, int node_idx,
return false;
}
if (add && (!ggml_is_contiguous(add->src[0]) || !ggml_is_contiguous_rows(add->src[1]))) {
return false;
}
return true;
}
@@ -2891,7 +2906,46 @@ static void evaluate_and_capture_cuda_graph(ggml_backend_cuda_context * cuda_ctx
static bool disable_fusion = (getenv("GGML_CUDA_DISABLE_FUSION") != nullptr);
if (!disable_fusion) {
if (ggml_cuda_can_fuse(cgraph, i, { GGML_OP_RMS_NORM, GGML_OP_MUL }, {})) {
if (node->op == GGML_OP_ADD) {
int n_fuse = 0;
ggml_op ops[8];
std::fill(ops, ops + 8, GGML_OP_ADD);
for (; n_fuse <= 6; ++n_fuse){
if (!ggml_can_fuse(cgraph, i + n_fuse, ops + n_fuse, 2)) {
break;
}
if (cgraph->nodes[i + n_fuse] != cgraph->nodes[i + n_fuse + 1]->src[0]) {
break;
}
if (!ggml_are_same_layout(cgraph->nodes[i + n_fuse]->src[1], cgraph->nodes[i + n_fuse + 1]->src[1])) {
break;
}
}
n_fuse++;
if (n_fuse > 1) {
for (int j = 0; j < n_fuse - 1; ++j) {
node->src[j + 2] = cgraph->nodes[i + j + 1]->src[1];
}
cgraph->nodes[i + n_fuse - 1]->data = node->data;
ggml_cuda_op_fused_add(*cuda_ctx, node, n_fuse);
i += n_fuse - 1;
continue;
}
}
if (ggml_cuda_can_fuse(cgraph, i, { GGML_OP_RMS_NORM, GGML_OP_MUL, GGML_OP_ADD}, {})) {
ggml_cuda_op_rms_norm_fused_add(*cuda_ctx, node, cgraph->nodes[i+1], cgraph->nodes[i+2]);
i += 2;
continue;
}
if (ggml_cuda_can_fuse(cgraph, i, { GGML_OP_RMS_NORM, GGML_OP_MUL}, {})) {
ggml_cuda_op_rms_norm_fused(*cuda_ctx, node, cgraph->nodes[i+1]);
i++;
continue;

211
ggml/src/ggml-cuda/norm.cu
View File

@@ -104,12 +104,29 @@ static __global__ void group_norm_f32(const float * x, float * dst, const int gr
}
}
template <int block_size, bool do_multiply = 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 int mul_ncols = 0,
const int mul_nrows = 0, const int mul_nchannels = 0, const int mul_nsamples = 0) {
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 int mul_ncols = 0,
const int mul_nrows = 0,
const int mul_nchannels = 0,
const int mul_nsamples = 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 int add_ncols = 0,
const int add_nrows = 0,
const int add_nchannels = 0,
const int add_nsamples = 0) {
const int nrows = gridDim.x;
const int nchannels = gridDim.y;
@@ -128,6 +145,13 @@ static __global__ void rms_norm_f32(
mul += mul_sample*mul_stride_sample + mul_channel*mul_stride_channel + mul_row*mul_stride_row;
}
if constexpr (do_add) {
const int add_row = row % add_nrows;
const int add_channel = channel % add_nchannels;
const int add_sample = sample % add_nsamples;
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) {
@@ -154,9 +178,16 @@ static __global__ void rms_norm_f32(
const float scale = rsqrtf(mean + eps);
for (int col = tid; col < ncols; col += block_size) {
if constexpr (do_multiply) {
if constexpr (do_multiply && do_add) {
const int mul_col = col % mul_ncols;
const int add_col = col % add_ncols;
dst[col] = scale * x[col] * mul[mul_col] + add[add_col];
} else if constexpr (do_multiply) {
const int mul_col = col % mul_ncols;
dst[col] = scale * x[col] * mul[mul_col];
} else if constexpr (do_add) {
const int add_col = col % add_ncols;
dst[col] += add[add_col];
} else {
dst[col] = scale * x[col];
}
@@ -331,23 +362,70 @@ static void rms_norm_f32_cuda(
}
}
static void rms_norm_mul_f32_cuda(
const float * x, const float * mul, 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 int mul_ncols, const int mul_nrows, const int mul_nchannels, const int mul_nsamples,
const float eps, cudaStream_t stream) {
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 int mul_ncols,
const int mul_nrows,
const int mul_nchannels,
const int mul_nsamples,
const int64_t add_stride_row,
const int64_t add_stride_channel,
const int64_t add_stride_sample,
const int add_ncols,
const int add_nrows,
const int add_nchannels,
const int 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 (ncols < 1024) {
const dim3 block_dims(WARP_SIZE, 1, 1);
rms_norm_f32<WARP_SIZE, true><<<blocks_num, block_dims, 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, mul_stride_sample, mul_ncols, mul_nrows, mul_nchannels, mul_nsamples);
if (add == nullptr) {
if (ncols < 1024) {
const dim3 block_dims(WARP_SIZE, 1, 1);
rms_norm_f32<WARP_SIZE, true><<<blocks_num, block_dims, 0, stream>>>(x, dst,
ncols, stride_row, stride_channel, stride_sample, eps,
mul, mul_stride_row, mul_stride_channel, mul_stride_sample,
mul_ncols, mul_nrows, mul_nchannels, mul_nsamples);
} else {
const dim3 block_dims(1024, 1, 1);
rms_norm_f32<1024, true><<<blocks_num, block_dims, 0, stream>>>(x, dst,
ncols, stride_row, stride_channel, stride_sample, eps,
mul, mul_stride_row, mul_stride_channel, mul_stride_sample,
mul_ncols, mul_nrows, mul_nchannels, mul_nsamples);
}
} else {
const dim3 block_dims(1024, 1, 1);
rms_norm_f32<1024, true><<<blocks_num, block_dims, 0, stream>>>(x, dst, ncols, stride_row, stride_channel, stride_sample, eps, mul, mul_stride_row, mul_stride_channel, mul_stride_sample, mul_ncols, mul_nrows, mul_nchannels, mul_nsamples);
if (ncols < 1024) {
const dim3 block_dims(WARP_SIZE, 1, 1);
rms_norm_f32<WARP_SIZE, true, true><<<blocks_num, block_dims, 0, stream>>>(x, dst,
ncols, stride_row, stride_channel, stride_sample, eps,
mul, mul_stride_row, mul_stride_channel, mul_stride_sample,
mul_ncols, mul_nrows, mul_nchannels, mul_nsamples,
add, add_stride_row, add_stride_channel, add_stride_sample,
add_ncols, add_nrows, add_nchannels, add_nsamples);
} else {
const dim3 block_dims(1024, 1, 1);
rms_norm_f32<1024, true, true><<<blocks_num, block_dims, 0, stream>>>(x, dst,
ncols, stride_row, stride_channel, stride_sample, eps,
mul, mul_stride_row, mul_stride_channel, mul_stride_sample,
mul_ncols, mul_nrows, mul_nchannels, mul_nsamples,
add, add_stride_row, add_stride_channel, add_stride_sample,
add_ncols, add_nrows, add_nchannels, add_nsamples);
}
}
}
@@ -491,7 +569,102 @@ void ggml_cuda_op_rms_norm_fused(ggml_backend_cuda_context & ctx, ggml_tensor *
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, dst_d, ne00, ne01, ne02, ne03, s01, s02, s03, mul_s01, mul_s02, mul_s03, mul_ncols, mul_nrows, mul_nchannels, mul_nsamples, eps, stream);
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) {

5
ggml/src/ggml-cuda/norm.cuh
View File

@@ -8,6 +8,11 @@ void ggml_cuda_op_rms_norm(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_rms_norm_fused(ggml_backend_cuda_context & ctx, ggml_tensor * dst, ggml_tensor * mul_tensor);
void ggml_cuda_op_rms_norm_fused_add(ggml_backend_cuda_context & ctx,
ggml_tensor * dst,
ggml_tensor * mul_tensor,
ggml_tensor * add_tensor);
void ggml_cuda_op_rms_norm_back(ggml_backend_cuda_context & ctx, ggml_tensor * dst);
void ggml_cuda_op_l2_norm(ggml_backend_cuda_context & ctx, ggml_tensor * dst);