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fix cuda get_rows

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leejet
2025-08-23 18:42:18 +08:00
parent d8377a0a37
commit d30e07dbb3
1 changed files with 52 additions and 44 deletions
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96
ggml/src/ggml-cuda/getrows.cu
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@@ -2,6 +2,9 @@
#include "dequantize.cuh"
#include "convert.cuh"
#define MIN(a, b) (a) < (b) ? (a) : (b)
#define MAX_GRIDDIM_Y 65535
template<int qk, int qr, dequantize_kernel_t dequantize_kernel, typename dst_t>
static __global__ void k_get_rows(
const void * __restrict__ src0, const int32_t * __restrict__ src1, dst_t * __restrict__ dst,
@@ -9,34 +12,36 @@ static __global__ void k_get_rows(
/*const int64_t ne10, const int64_t ne11,*/ const int64_t ne12, /*const int64_t ne13,*/
/*const size_t s0,*/ const size_t s1, const size_t s2, const size_t s3,
/*const size_t nb00,*/ const size_t nb01, const size_t nb02, const size_t nb03,
const size_t s10, const size_t s11, const size_t s12/*, const size_t s13*/) {
const size_t s10, const size_t s11, const size_t s12/*, const size_t s13*/, const size_t block_num_y) {
// The x and y dimensions of the grid are swapped because the maximum allowed grid size for x is higher.
const int i00 = (blockIdx.y * blockDim.x + threadIdx.x)*2;
const int i10 = blockIdx.x;
const int i11 = blockIdx.z / ne12;
const int i12 = blockIdx.z % ne12;
for (int64_t iy = blockIdx.y; iy < block_num_y; iy+=MAX_GRIDDIM_Y) {
// The x and y dimensions of the grid are swapped because the maximum allowed grid size for x is higher.
const int i00 = (iy * blockDim.x + threadIdx.x)*2;
const int i10 = blockIdx.x;
const int i11 = blockIdx.z / ne12;
const int i12 = blockIdx.z % ne12;
if (i00 >= ne00) {
return;
if (i00 >= ne00) {
return;
}
const int i01 = src1[i10*s10 + i11*s11 + i12*s12];
dst_t * dst_row = dst + i10*s1 + i11*s2 + i12*s3;
const void * src0_row = (const char *) src0 + i01*nb01 + i11*nb02 + i12*nb03;
const int ib = i00/qk; // block index
const int iqs = (i00%qk)/qr; // quant index
const int iybs = i00 - i00%qk; // dst block start index
const int y_offset = qr == 1 ? 1 : qk/2;
// dequantize
float2 v;
dequantize_kernel(src0_row, ib, iqs, v);
dst_row[iybs + iqs + 0] = ggml_cuda_cast<dst_t>(v.x);
dst_row[iybs + iqs + y_offset] = ggml_cuda_cast<dst_t>(v.y);
}
const int i01 = src1[i10*s10 + i11*s11 + i12*s12];
dst_t * dst_row = dst + i10*s1 + i11*s2 + i12*s3;
const void * src0_row = (const char *) src0 + i01*nb01 + i11*nb02 + i12*nb03;
const int ib = i00/qk; // block index
const int iqs = (i00%qk)/qr; // quant index
const int iybs = i00 - i00%qk; // dst block start index
const int y_offset = qr == 1 ? 1 : qk/2;
// dequantize
float2 v;
dequantize_kernel(src0_row, ib, iqs, v);
dst_row[iybs + iqs + 0] = ggml_cuda_cast<dst_t>(v.x);
dst_row[iybs + iqs + y_offset] = ggml_cuda_cast<dst_t>(v.y);
}
template<typename src0_t, typename dst_t>
@@ -46,24 +51,27 @@ static __global__ void k_get_rows_float(
/*const int64_t ne10, const int64_t ne11,*/ const int64_t ne12, /*const int64_t ne13,*/
/*const size_t s0,*/ const size_t s1, const size_t s2, const size_t s3,
/*const size_t nb00,*/ const size_t nb01, const size_t nb02, const size_t nb03,
const size_t s10, const size_t s11, const size_t s12/*, const size_t s13*/) {
const size_t s10, const size_t s11, const size_t s12/*, const size_t s13*/, const size_t block_num_y) {
// The x and y dimensions of the grid are swapped because the maximum allowed grid size for x is higher.
const int i00 = blockIdx.y * blockDim.x + threadIdx.x;
const int i10 = blockIdx.x;
const int i11 = blockIdx.z / ne12;
const int i12 = blockIdx.z % ne12;
for (int64_t iy = blockIdx.y; iy < block_num_y; iy+=MAX_GRIDDIM_Y) {
if (i00 >= ne00) {
return;
// The x and y dimensions of the grid are swapped because the maximum allowed grid size for x is higher.
const int i00 = iy * blockDim.x + threadIdx.x;
const int i10 = blockIdx.x;
const int i11 = blockIdx.z / ne12;
const int i12 = blockIdx.z % ne12;
if (i00 >= ne00) {
return;
}
const int i01 = src1[i10*s10 + i11*s11 + i12*s12];
dst_t * dst_row = dst + i10*s1 + i11*s2 + i12*s3;
const src0_t * src0_row = (const src0_t *)((const char *) src0 + i01*nb01 + i11*nb02 + i12*nb03);
dst_row[i00] = ggml_cuda_cast<dst_t>(src0_row[i00]);
}
const int i01 = src1[i10*s10 + i11*s11 + i12*s12];
dst_t * dst_row = dst + i10*s1 + i11*s2 + i12*s3;
const src0_t * src0_row = (const src0_t *)((const char *) src0 + i01*nb01 + i11*nb02 + i12*nb03);
dst_row[i00] = ggml_cuda_cast<dst_t>(src0_row[i00]);
}
template<typename grad_t, typename dst_t>
@@ -98,7 +106,7 @@ static void get_rows_cuda_q(
cudaStream_t stream) {
const dim3 block_dims(CUDA_GET_ROWS_BLOCK_SIZE, 1, 1);
const int block_num_y = (ne00 + 2*CUDA_GET_ROWS_BLOCK_SIZE - 1) / (2*CUDA_GET_ROWS_BLOCK_SIZE);
const dim3 block_nums(ne10, block_num_y, ne11*ne12);
const dim3 block_nums(ne10, MIN(block_num_y, MAX_GRIDDIM_Y), ne11*ne12);
// strides in elements
// const size_t s0 = nb0 / sizeof(dst_t);
@@ -119,7 +127,7 @@ static void get_rows_cuda_q(
/*ne10, ne11,*/ ne12, /*ne13,*/
/* s0,*/ s1, s2, s3,
/* nb00,*/ nb01, nb02, nb03,
s10, s11, s12/*, s13*/);
s10, s11, s12/*, s13*/, block_num_y);
}
template<typename src0_t, typename dst_t>
@@ -131,7 +139,7 @@ static void get_rows_cuda_float(
cudaStream_t stream) {
const dim3 block_dims(CUDA_GET_ROWS_BLOCK_SIZE, 1, 1);
const int block_num_y = (ne00 + CUDA_GET_ROWS_BLOCK_SIZE - 1) / CUDA_GET_ROWS_BLOCK_SIZE;
const dim3 block_nums(ne10, block_num_y, ne11*ne12);
const dim3 block_nums(ne10, MIN(block_num_y, MAX_GRIDDIM_Y), ne11*ne12);
// strides in elements
// const size_t s0 = nb0 / sizeof(dst_t);
@@ -150,7 +158,7 @@ static void get_rows_cuda_float(
/*ne10, ne11,*/ ne12, /*ne13,*/
/* s0,*/ s1, s2, s3,
/* nb00,*/ nb01, nb02, nb03,
s10, s11, s12/*, s13*/);
s10, s11, s12/*, s13*/, block_num_y);
}
template <typename dst_t>