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llama.cpp
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opencl: add general q4_K mv

This commit is contained in:
Li He 2026-01-22 14:48:55 -08:00
parent b2aacdafd8
commit 80266a696e
3 changed files with 240 additions and 2 deletions
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1
ggml/src/ggml-opencl/CMakeLists.txt
View File

@ -85,6 +85,7 @@ set(GGML_OPENCL_KERNELS
mul_mv_q4_0_f32_8x_flat
mul_mv_q4_0_f32_1d_8x_flat
mul_mv_q4_0_f32_1d_16x_flat
mul_mv_q4_k_f32
mul_mv_q6_k_f32
mul_mv_q6_k_f32_flat
mul_mv_q8_0_f32

61
ggml/src/ggml-opencl/ggml-opencl.cpp
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@ -532,6 +532,7 @@ struct ggml_backend_opencl_context {
cl_kernel kernel_restore_block_q4_0_noshuffle;
cl_kernel kernel_convert_block_q6_K, kernel_restore_block_q6_K;
cl_kernel kernel_mul_mat_q4_0_f32_1d_8x_flat, kernel_mul_mat_q4_0_f32_1d_16x_flat;
cl_kernel kernel_mul_mv_q4_K_f32;
cl_kernel kernel_mul_mv_q6_K_f32;
cl_kernel kernel_mul_mv_q6_K_f32_flat;
cl_kernel kernel_mul_mv_mxfp4_f32, kernel_mul_mv_mxfp4_f32_flat;
@ -1118,6 +1119,23 @@ static void load_cl_kernels(ggml_backend_opencl_context *backend_ctx, ggml_cl_ve
GGML_LOG_CONT(".");
}
// mul_mv_q4_k_f32
{
#ifdef GGML_OPENCL_EMBED_KERNELS
const std::string kernel_src {
#include "mul_mv_q4_k_f32.cl.h"
};
#else
const std::string kernel_src = read_file("mul_mv_q4_k_f32.cl");
#endif
cl_program prog =
build_program_from_source(backend_ctx->context, backend_ctx->device, kernel_src.c_str(), compile_opts);
CL_CHECK((backend_ctx->kernel_mul_mv_q4_K_f32 = clCreateKernel(prog, "kernel_mul_mv_q4_K_f32", &err), err));
CL_CHECK(clReleaseProgram(prog));
GGML_LOG_CONT(".");
}
// mul_mv_q6_k_f32
{
#ifdef GGML_OPENCL_EMBED_KERNELS
@ -3382,6 +3400,7 @@ static bool ggml_opencl_supports_op(ggml_backend_dev_t dev, const struct ggml_te
} else if (op->src[0]->type == GGML_TYPE_F32) {
return op->src[1]->type == GGML_TYPE_F32;
} else if (op->src[0]->type == GGML_TYPE_Q4_0 || op->src[0]->type == GGML_TYPE_MXFP4 ||
op->src[0]->type == GGML_TYPE_Q4_K ||
op->src[0]->type == GGML_TYPE_Q6_K) {
return op->src[1]->type == GGML_TYPE_F32 && ggml_is_contiguous(op->src[0]) && ggml_is_contiguous(op->src[1]);
} else if (op->src[0]->type == GGML_TYPE_Q8_0) {
@ -9324,7 +9343,42 @@ static void ggml_cl_mul_mat(ggml_backend_t backend, const ggml_tensor * src0, co
}
case GGML_TYPE_Q2_K:
case GGML_TYPE_Q3_K:
case GGML_TYPE_Q4_K:
case GGML_TYPE_Q4_K: {
kernel = backend_ctx->kernel_mul_mv_q4_K_f32;
if (backend_ctx->gpu_family == INTEL) {
nth0 = 16;
nth1 = 1;
ndst = 4;
} else if (backend_ctx->gpu_family == ADRENO) {
nth0 = 64;
nth1 = 1;
ndst = 4;
} else {
GGML_ASSERT(false && "TODO: Unknown GPU");
}
CL_CHECK(clSetKernelArg(kernel, 0, sizeof(cl_mem), &extra0->data_device));
CL_CHECK(clSetKernelArg(kernel, 1, sizeof(int), &offset0));
CL_CHECK(clSetKernelArg(kernel, 2, sizeof(cl_mem), &extra1->data_device));
CL_CHECK(clSetKernelArg(kernel, 3, sizeof(int), &offset1));
CL_CHECK(clSetKernelArg(kernel, 4, sizeof(cl_mem), &extrad->data_device));
CL_CHECK(clSetKernelArg(kernel, 5, sizeof(int), &offsetd));
CL_CHECK(clSetKernelArg(kernel, 6, sizeof(int), &ne00));
CL_CHECK(clSetKernelArg(kernel, 7, sizeof(int), &ne01));
CL_CHECK(clSetKernelArg(kernel, 8, sizeof(cl_ulong), &nb01));
CL_CHECK(clSetKernelArg(kernel, 9, sizeof(cl_ulong), &nb02));
CL_CHECK(clSetKernelArg(kernel, 10, sizeof(cl_ulong), &nb03));
CL_CHECK(clSetKernelArg(kernel, 11, sizeof(int), &ne12));
CL_CHECK(clSetKernelArg(kernel, 12, sizeof(cl_ulong), &nb11));
CL_CHECK(clSetKernelArg(kernel, 13, sizeof(cl_ulong), &nb12));
CL_CHECK(clSetKernelArg(kernel, 14, sizeof(cl_ulong), &nb13));
CL_CHECK(clSetKernelArg(kernel, 15, sizeof(int), &ne0));
CL_CHECK(clSetKernelArg(kernel, 16, sizeof(int), &ne1));
CL_CHECK(clSetKernelArg(kernel, 17, sizeof(int), &r2));
CL_CHECK(clSetKernelArg(kernel, 18, sizeof(int), &r3));
break;
}
case GGML_TYPE_Q5_K:
case GGML_TYPE_Q6_K:
#ifdef GGML_OPENCL_SOA_Q
@ -9486,7 +9540,10 @@ static void ggml_cl_mul_mat(ggml_backend_t backend, const ggml_tensor * src0, co
backend_ctx->enqueue_ndrange_kernel(kernel, 3, global_work_size, local_work_size, dst);
} else if (src0t == GGML_TYPE_Q4_K) {
GGML_ASSERT(false && "not implemented");
size_t global_work_size[] = {(size_t)(ne01+ndst*nth1-1)/(ndst*nth1)*nth0, (size_t)ne11*nth1, (size_t)ne12*ne13};
size_t local_work_size[] = {(size_t)nth0, (size_t)nth1, 1};
backend_ctx->enqueue_ndrange_kernel(kernel, 3, global_work_size, local_work_size, dst);
} else if (src0t == GGML_TYPE_Q3_K) {
GGML_ASSERT(false && "not implemented");
} else if (src0t == GGML_TYPE_Q5_K) {

180
ggml/src/ggml-opencl/kernels/mul_mv_q4_k_f32.cl Normal file
View File

@ -0,0 +1,180 @@
#ifdef cl_intel_required_subgroup_size
#pragma OPENCL EXTENSION cl_intel_required_subgroup_size : enable
#define INTEL_GPU 1
#define REQD_SUBGROUP_SIZE_16 __attribute__((intel_reqd_sub_group_size(16)))
#define REQD_SUBGROUP_SIZE_32 __attribute__((intel_reqd_sub_group_size(32)))
#elif defined(cl_qcom_reqd_sub_group_size)
#pragma OPENCL EXTENSION cl_qcom_reqd_sub_group_size : enable
#define ADRENO_GPU 1
#define REQD_SUBGROUP_SIZE_64 __attribute__((qcom_reqd_sub_group_size("half")))
#define REQD_SUBGROUP_SIZE_128 __attribute__((qcom_reqd_sub_group_size("full")))
#endif
//------------------------------------------------------------------------------
// block_q4_K
//------------------------------------------------------------------------------
#define QK_K 256
#define K_SCALE_SIZE 12
// 8 blocks of 32 elements each
// weight is represented as x = a * q + b
typedef struct {
half d; // super-block scale for quantized scales
half dmin; // super-block scale for quantized mins
uchar scales[K_SCALE_SIZE]; // scales and mins, quantized with 6 bits
uchar qs[QK_K/2]; // 4-bit quants
} block_q4_K;
#undef N_DST
#undef N_SIMDGROUP
#undef N_SIMDWIDTH
#ifdef INTEL_GPU
#define N_DST 4 // number of rows each SIMD group works on
#define N_SIMDGROUP 1 // number of SIMD groups in a thread group
#define N_SIMDWIDTH 16 // SIMD group size
#elif defined (ADRENO_GPU)
#define N_DST 4
#define N_SIMDGROUP 1
#define N_SIMDWIDTH 64
#endif
#undef BLOCK_STRIDE
// number of (super) blocks each subgroup processes
// each thread in a subgroup processes a block (32 weights)
#define BLOCK_STRIDE (N_SIMDWIDTH/8)
#ifdef INTEL_GPU
REQD_SUBGROUP_SIZE_16
#elif defined (ADRENO_GPU)
REQD_SUBGROUP_SIZE_64
#endif
kernel void kernel_mul_mv_q4_K_f32(
global char * src0,
int offset0,
global char * src1,
int offset1,
global char * dst,
int offsetd,
int ne00,
int ne01,
ulong nb01,
ulong nb02,
ulong nb03,
int ne12,
ulong nb11,
ulong nb12,
ulong nb13,
int ne0,
int ne1,
int r2,
int r3
) {
src0 = src0 + offset0;
src1 = src1 + offset1;
dst = dst + offsetd;
ushort kmask1 = 0x3f3f;
ushort kmask2 = 0x0f0f;
ushort kmask3 = 0xc0c0;
int ix = get_sub_group_local_id()/8; // super block index
int it = get_sub_group_local_id()%8; // block index (inside super block)
int iq = it/4; // 0 or 1 - first or second half of the super block
int ir = it%4; // 0...3 - block index in the half super block
int nb = ne00/QK_K;
int r0 = get_group_id(0);
int r1 = get_group_id(1);
int im = get_group_id(2);
int first_row = (r0 * N_SIMDGROUP + get_sub_group_id()) * N_DST;
int i12 = im%ne12;
int i13 = im/ne12;
int offset_src0 = first_row*nb01 + (i12/r2)*nb02 + (i13/r3)*nb03;
int offset_src1 = r1*nb11 + (i12 )*nb12 + (i13 )*nb13;
global block_q4_K * x = (global block_q4_K *) (src0 + offset_src0);
global float * y = (global float *) (src1 + offset_src1);
float yl[16];
float yh[16];
float sumf[N_DST] = {0.f};
float all_sum;
global float * y4 = y + ix * QK_K + 64 * iq + 8 * ir;
ushort sc16[4];
uchar * sc8 = (uchar *)sc16;
for (int ib = ix; ib < nb; ib += BLOCK_STRIDE) {
float4 sumy = {0.f, 0.f, 0.f, 0.f};
for (int i = 0; i < 8; ++i) {
yl[i+0] = y4[i+0];
sumy.s0 += yl[i+0];
yl[i+8] = y4[i+32];
sumy.s1 += yl[i+8];
yh[i+0] = y4[i+128];
sumy.s2 += yh[i+0];
yh[i+8] = y4[i+160];
sumy.s3 += yh[i+8];
}
global ushort * sc = (global ushort *)x[ib].scales + iq;
global ushort * q1 = (global ushort *)x[ib].qs + 16 * iq + 4 * ir;
global half * dh = &x[ib].d;
for (int row = 0; row < N_DST; row++) {
sc16[0] = sc[0] & kmask1;
sc16[1] = sc[2] & kmask1;
sc16[2] = ((sc[4] >> 0) & kmask2) | ((sc[0] & kmask3) >> 2);
sc16[3] = ((sc[4] >> 4) & kmask2) | ((sc[2] & kmask3) >> 2);
global ushort * q2 = q1 + 32;
float4 acc1 = {0.f, 0.f, 0.f, 0.f};
float4 acc2 = {0.f, 0.f, 0.f, 0.f};
for (int i = 0; i < 8; i += 2) {
acc1.s0 += yl[i+0] * (q1[i/2] & 0x000F);
acc1.s1 += yl[i+1] * (q1[i/2] & 0x0F00);
acc1.s2 += yl[i+8] * (q1[i/2] & 0x00F0);
acc1.s3 += yl[i+9] * (q1[i/2] & 0xF000);
acc2.s0 += yh[i+0] * (q2[i/2] & 0x000F);
acc2.s1 += yh[i+1] * (q2[i/2] & 0x0F00);
acc2.s2 += yh[i+8] * (q2[i/2] & 0x00F0);
acc2.s3 += yh[i+9] * (q2[i/2] & 0xF000);
}
float dall = dh[0];
float dmin = dh[1];
sumf[row] += dall * ((acc1.s0 + 1.f/256.f * acc1.s1) * sc8[0] +
(acc1.s2 + 1.f/256.f * acc1.s3) * sc8[1] * 1.f/16.f +
(acc2.s0 + 1.f/256.f * acc2.s1) * sc8[4] +
(acc2.s2 + 1.f/256.f * acc2.s3) * sc8[5] * 1.f/16.f) -
dmin * (sumy.s0 * sc8[2] + sumy.s1 * sc8[3] + sumy.s2 * sc8[6] + sumy.s3 * sc8[7]);
q1 += nb01/2;
sc += nb01/2;
dh += nb01/2;
}
y4 += BLOCK_STRIDE * QK_K;
}
global float * dst_f32 = (global float *) dst + im*ne0*ne1 + r1*ne0;
for (int row = 0; row < N_DST; ++row) {
all_sum = sub_group_reduce_add(sumf[row]);
if (first_row + row < ne01) {
if (get_sub_group_local_id() == 0) {
dst_f32[first_row + row] = all_sum;
}
}
}
}