llama-cpp-sys-4 0.7.0

Low Level Bindings to llama.cpp
Documentation 
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#pragma OPENCL EXTENSION cl_khr_fp16 : enable
#pragma OPENCL EXTENSION cl_khr_subgroups : enable

#ifdef 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")))
#endif

#define QK4_0 32
#define NSUBGROUPS 4
#define SUBGROUP_SIZE 64

#define dequantizeBlockAccum_ns_sgbroadcast_1_hi(total_sums, bits4, scale, minv, y) \
    float shared_y; \
    shared_y = sub_group_broadcast(y.s0, 0); \
    total_sums.s0 += ((bits4.s0 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s1 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s1, 0); \
    total_sums.s0 += (((bits4.s0 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s2, 0); \
    total_sums.s0 += (((bits4.s0 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s3, 0); \
    total_sums.s0 += (((bits4.s0 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s4, 0); \
    total_sums.s0 += ((bits4.s2 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s3 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s5, 0); \
    total_sums.s0 += (((bits4.s2 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s6, 0); \
    total_sums.s0 += (((bits4.s2 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s7, 0); \
    total_sums.s0 += (((bits4.s2 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s0, 1); \
    total_sums.s0 += ((bits4.s4 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s5 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s1, 1); \
    total_sums.s0 += (((bits4.s4 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s2, 1); \
    total_sums.s0 += (((bits4.s4 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s3, 1); \
    total_sums.s0 += (((bits4.s4 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s4, 1); \
    total_sums.s0 += ((bits4.s6 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s7 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s5, 1); \
    total_sums.s0 += (((bits4.s6 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s6, 1); \
    total_sums.s0 += (((bits4.s6 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s7, 1); \
    total_sums.s0 += (((bits4.s6 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \


#define dequantizeBlockAccum_ns_sgbroadcast_1_lo(total_sums, bits4, scale, minv, y) \
    shared_y = sub_group_broadcast(y.s0, 2); \
    total_sums.s0 += ((bits4.s0 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s1 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s1, 2); \
    total_sums.s0 += (((bits4.s0 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s2, 2); \
    total_sums.s0 += (((bits4.s0 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s3, 2); \
    total_sums.s0 += (((bits4.s0 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s1 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s4, 2); \
    total_sums.s0 += ((bits4.s2 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s3 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s5, 2); \
    total_sums.s0 += (((bits4.s2 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s6, 2); \
    total_sums.s0 += (((bits4.s2 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s7, 2); \
    total_sums.s0 += (((bits4.s2 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s3 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s0, 3); \
    total_sums.s0 += ((bits4.s4 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s5 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s1, 3); \
    total_sums.s0 += (((bits4.s4 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s2, 3); \
    total_sums.s0 += (((bits4.s4 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s3, 3); \
    total_sums.s0 += (((bits4.s4 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s5 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s4, 3); \
    total_sums.s0 += ((bits4.s6 & 0x000F) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += ((bits4.s7 & 0x000F) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s5, 3); \
    total_sums.s0 += (((bits4.s6 & 0x00F0) >> 4) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0x00F0) >> 4) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s6, 3); \
    total_sums.s0 += (((bits4.s6 & 0x0F00) >> 8) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0x0F00) >> 8) * scale.s1 + minv.s1) * shared_y; \
    shared_y = sub_group_broadcast(y.s7, 3); \
    total_sums.s0 += (((bits4.s6 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y; \
    total_sums.s1 += (((bits4.s7 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y; \


#define dequantizeBlockAccum_ns_sgbroadcast_8_hi(total_sums, bits4, scale, minv, y) \
    float8 shared_y; \
    shared_y = sub_group_broadcast(y, 0); \
    total_sums.s0 += ((bits4.s0 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s0; \
    total_sums.s0 += (((bits4.s0 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s1; \
    total_sums.s0 += (((bits4.s0 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s2; \
    total_sums.s0 += (((bits4.s0 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s3; \
    total_sums.s0 += ((bits4.s2 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s4; \
    total_sums.s0 += (((bits4.s2 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s5; \
    total_sums.s0 += (((bits4.s2 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s6; \
    total_sums.s0 += (((bits4.s2 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s7; \
    total_sums.s1 += ((bits4.s1 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s0; \
    total_sums.s1 += (((bits4.s1 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s1; \
    total_sums.s1 += (((bits4.s1 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s2; \
    total_sums.s1 += (((bits4.s1 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s3; \
    total_sums.s1 += ((bits4.s3 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s4; \
    total_sums.s1 += (((bits4.s3 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s5; \
    total_sums.s1 += (((bits4.s3 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s6; \
    total_sums.s1 += (((bits4.s3 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s7; \
    shared_y = sub_group_broadcast(y, 1); \
    total_sums.s0 += ((bits4.s4 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s0; \
    total_sums.s0 += (((bits4.s4 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s1; \
    total_sums.s0 += (((bits4.s4 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s2; \
    total_sums.s0 += (((bits4.s4 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s3; \
    total_sums.s0 += ((bits4.s6 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s4; \
    total_sums.s0 += (((bits4.s6 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s5; \
    total_sums.s0 += (((bits4.s6 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s6; \
    total_sums.s0 += (((bits4.s6 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s7; \
    total_sums.s1 += ((bits4.s5 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s0; \
    total_sums.s1 += (((bits4.s5 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s1; \
    total_sums.s1 += (((bits4.s5 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s2; \
    total_sums.s1 += (((bits4.s5 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s3; \
    total_sums.s1 += ((bits4.s7 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s4; \
    total_sums.s1 += (((bits4.s7 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s5; \
    total_sums.s1 += (((bits4.s7 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s6; \
    total_sums.s1 += (((bits4.s7 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s7; \


#define dequantizeBlockAccum_ns_sgbroadcast_8_lo(total_sums, bits4, scale, minv, y) \
    shared_y = sub_group_broadcast(y, 2); \
    total_sums.s0 += ((bits4.s0 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s0; \
    total_sums.s0 += (((bits4.s0 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s1; \
    total_sums.s0 += (((bits4.s0 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s2; \
    total_sums.s0 += (((bits4.s0 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s3; \
    total_sums.s0 += ((bits4.s2 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s4; \
    total_sums.s0 += (((bits4.s2 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s5; \
    total_sums.s0 += (((bits4.s2 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s6; \
    total_sums.s0 += (((bits4.s2 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s7; \
    total_sums.s1 += ((bits4.s1 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s0; \
    total_sums.s1 += (((bits4.s1 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s1; \
    total_sums.s1 += (((bits4.s1 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s2; \
    total_sums.s1 += (((bits4.s1 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s3; \
    total_sums.s1 += ((bits4.s3 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s4; \
    total_sums.s1 += (((bits4.s3 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s5; \
    total_sums.s1 += (((bits4.s3 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s6; \
    total_sums.s1 += (((bits4.s3 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s7; \
    shared_y = sub_group_broadcast(y, 3); \
    total_sums.s0 += ((bits4.s4 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s0; \
    total_sums.s0 += (((bits4.s4 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s1; \
    total_sums.s0 += (((bits4.s4 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s2; \
    total_sums.s0 += (((bits4.s4 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s3; \
    total_sums.s0 += ((bits4.s6 & 0x000F)         * scale.s0 + minv.s0) * shared_y.s4; \
    total_sums.s0 += (((bits4.s6 & 0x00F0) >> 4)  * scale.s0 + minv.s0) * shared_y.s5; \
    total_sums.s0 += (((bits4.s6 & 0x0F00) >> 8)  * scale.s0 + minv.s0) * shared_y.s6; \
    total_sums.s0 += (((bits4.s6 & 0xF000) >> 12) * scale.s0 + minv.s0) * shared_y.s7; \
    total_sums.s1 += ((bits4.s5 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s0; \
    total_sums.s1 += (((bits4.s5 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s1; \
    total_sums.s1 += (((bits4.s5 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s2; \
    total_sums.s1 += (((bits4.s5 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s3; \
    total_sums.s1 += ((bits4.s7 & 0x000F)         * scale.s1 + minv.s1) * shared_y.s4; \
    total_sums.s1 += (((bits4.s7 & 0x00F0) >> 4)  * scale.s1 + minv.s1) * shared_y.s5; \
    total_sums.s1 += (((bits4.s7 & 0x0F00) >> 8)  * scale.s1 + minv.s1) * shared_y.s6; \
    total_sums.s1 += (((bits4.s7 & 0xF000) >> 12) * scale.s1 + minv.s1) * shared_y.s7; \

#ifdef ADRENO_GPU
REQD_SUBGROUP_SIZE_64
#endif
kernel void kernel_gemv_noshuffle_q4_1_f32(
        read_only  image1d_buffer_t src0_q,
        global half2  * src0_d,
        global half2  * src0_m,
        read_only  image1d_buffer_t src1,
        global float * dst,
        ulong offsetd,
        int ne00,
        int ne01)
{
    uint groupId = get_local_id(1);
    uint gid     = get_global_id(0);
    ushort slid    = get_sub_group_local_id();

    uint K = ne00;
    uint M = ne01;

    uint LINE_STRIDE_A = M / 2;
    uint BLOCK_STRIDE_A = NSUBGROUPS * M;

    private uint4     regA;
    private half2     regS;
    private half2     regM;
    private float8    regB;

    private float2 totalSum = (float2)(0.0f);

    // loop along K in block granularity, skip 4 blocks every iter
    for (uint k = groupId; k < (K / QK4_0); k += NSUBGROUPS) {
        regS = src0_d[gid + k * LINE_STRIDE_A]; // each fiber loads scale of two rows
        regM = src0_m[gid + k * LINE_STRIDE_A]; // each fiber loads min of two rows
        // first 4 fibers in each wave load 8 B values to its private scope
        if (slid < 4) {
            regB.s0123 = read_imagef(src1, (slid * 2 + k * 8));
            regB.s4567 = read_imagef(src1, (1 + slid * 2 + k * 8));
        }

        // load half weights for two blocks in consecutive rows
        regA.s0 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 0)).x;
        regA.s1 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 1)).x;
        regA.s2 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 2)).x;
        regA.s3 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 3)).x;
#ifdef VECTOR_SUB_GROUP_BROADCAT
        dequantizeBlockAccum_ns_sgbroadcast_8_hi(totalSum, as_ushort8(regA), regS, regM, regB);
#else
        dequantizeBlockAccum_ns_sgbroadcast_1_hi(totalSum, as_ushort8(regA), regS, regM, regB);
#endif // VECTOR_SUB_GROUP_BROADCAT

        regA.s0 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 4)).x;
        regA.s1 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 5)).x;
        regA.s2 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 6)).x;
        regA.s3 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 7)).x;
#ifdef VECTOR_SUB_GROUP_BROADCAT
        dequantizeBlockAccum_ns_sgbroadcast_8_lo(totalSum, as_ushort8(regA), regS, regM, regB);
#else
        dequantizeBlockAccum_ns_sgbroadcast_1_lo(totalSum, as_ushort8(regA), regS, regM, regB);
#endif // VECTOR_SUB_GROUP_BROADCAT
    }

    // reduction in local memory, assumes #wave=4
    local float2 reduceLM[SUBGROUP_SIZE * 3];
    if (groupId == 1) {
        reduceLM[SUBGROUP_SIZE * 0 + slid] = totalSum;
    }
    if (groupId == 2) {
        reduceLM[SUBGROUP_SIZE * 1 + slid] = totalSum;
    }
    if (groupId == 3) {
        reduceLM[SUBGROUP_SIZE * 2 + slid] = totalSum;
    }

    barrier(CLK_LOCAL_MEM_FENCE);

    if (groupId == 0) {
        totalSum += reduceLM[SUBGROUP_SIZE * 0 + slid];
    }
    if (groupId == 0) {
        totalSum += reduceLM[SUBGROUP_SIZE * 1 + slid];
    }
    if (groupId == 0) {
        totalSum += reduceLM[SUBGROUP_SIZE * 2 + slid];
    }

    // 2 outputs per fiber in wave 0
    if (groupId == 0) {
        dst = (global float*)((global char*)dst + offsetd);
        // Guard the two output rows. The x-grid is padded to CEIL_DIV(ne01/2,64)*64,
        // so when ne01 is not a multiple of 128 the tail row-pairs run past row ne01
        // and would overrun dst into the adjacent tensor. No-op / byte-identical when
        // ne01 % 128 == 0 (M/2 already a multiple of 64 -> no padding).
        if (gid * 2 + 0 < M) dst[gid * 2 + 0] = totalSum.s0;
        if (gid * 2 + 1 < M) dst[gid * 2 + 1] = totalSum.s1;
    }

}

// Multi-column (N in [2..4]) variant of the q4_1 decode GEMV (spec/MTP verify) =
// q4_0 mc3 + the q4_1 per-block min (regM; dequant = q*scale + minv). n_cols=2..4;
// routes the small-batch verify OFF the gemm_noshuffle_q4_1 dead-zone. n_cols==3 is
// byte-identical to the original mc3. NB: this file spells the vec-broadcast define
// BROADCAT (no S) — match it so the fast _8 path compiles.
#ifdef VECTOR_SUB_GROUP_BROADCAT
#define MC_DQ1_HI dequantizeBlockAccum_ns_sgbroadcast_8_hi
#define MC_DQ1_LO dequantizeBlockAccum_ns_sgbroadcast_8_lo
#else
#define MC_DQ1_HI dequantizeBlockAccum_ns_sgbroadcast_1_hi
#define MC_DQ1_LO dequantizeBlockAccum_ns_sgbroadcast_1_lo
#endif
#define MC_COL_Q41(ts, c) \
    { if (slid < 4) { regB.s0123 = read_imagef(src1, (c)*COL_STRIDE     + slid*2 + k*8); \
                      regB.s4567 = read_imagef(src1, (c)*COL_STRIDE + 1 + slid*2 + k*8); } \
      MC_DQ1_HI(ts, as_ushort8(regA_hi), regS, regM, regB); \
      MC_DQ1_LO(ts, as_ushort8(regA_lo), regS, regM, regB); }
#ifdef ADRENO_GPU
REQD_SUBGROUP_SIZE_64
#endif
kernel void kernel_gemv_noshuffle_q4_1_f32_mc3(
        read_only  image1d_buffer_t src0_q,
        global half2  * src0_d,
        global half2  * src0_m,
        read_only  image1d_buffer_t src1,
        global float * dst,
        ulong offsetd,
        int ne00,
        int ne01,
        int n_cols)
{
    uint groupId = get_local_id(1);
    uint gid     = get_global_id(0);
    ushort slid  = get_sub_group_local_id();

    uint K = ne00;
    uint M = ne01;

    uint LINE_STRIDE_A  = M / 2;
    uint BLOCK_STRIDE_A = NSUBGROUPS * M;
    uint COL_STRIDE     = K / 4;   // float4 pixels per activation column

    private uint4  regA_hi, regA_lo;
    private half2  regS, regM;
    private float8 regB;

    private float2 ts0 = (float2)(0.0f);
    private float2 ts1 = (float2)(0.0f);
    private float2 ts2 = (float2)(0.0f);
    private float2 ts3 = (float2)(0.0f);

    for (uint k = groupId; k < (K / QK4_0); k += NSUBGROUPS) {
        regS = src0_d[gid + k * LINE_STRIDE_A];
        regM = src0_m[gid + k * LINE_STRIDE_A];

        // weights loaded ONCE, reused across the columns
        regA_hi.s0 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 0)).x;
        regA_hi.s1 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 1)).x;
        regA_hi.s2 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 2)).x;
        regA_hi.s3 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 3)).x;
        regA_lo.s0 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 4)).x;
        regA_lo.s1 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 5)).x;
        regA_lo.s2 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 6)).x;
        regA_lo.s3 = read_imageui(src0_q, (gid + k * BLOCK_STRIDE_A + LINE_STRIDE_A * 7)).x;

        MC_COL_Q41(ts0, 0);
        MC_COL_Q41(ts1, 1);
        if (n_cols > 2) MC_COL_Q41(ts2, 2);
        if (n_cols > 3) MC_COL_Q41(ts3, 3);
    }

    // cross-subgroup reduce: pack the (up to 4) columns' float2 into a float8.
    local float8 reduceLM[SUBGROUP_SIZE * 3];
    float8 acc = (float8)(ts0.s0, ts0.s1, ts1.s0, ts1.s1, ts2.s0, ts2.s1, ts3.s0, ts3.s1);
    if (groupId == 1) { reduceLM[SUBGROUP_SIZE * 0 + slid] = acc; }
    if (groupId == 2) { reduceLM[SUBGROUP_SIZE * 1 + slid] = acc; }
    if (groupId == 3) { reduceLM[SUBGROUP_SIZE * 2 + slid] = acc; }

    barrier(CLK_LOCAL_MEM_FENCE);

    if (groupId == 0) {
        acc += reduceLM[SUBGROUP_SIZE * 0 + slid];
        acc += reduceLM[SUBGROUP_SIZE * 1 + slid];
        acc += reduceLM[SUBGROUP_SIZE * 2 + slid];
        dst = (global float*)((global char*)dst + offsetd);
        // dst is column-major [M rows x n_cols cols]: (row, col) at col*M + row
        vstore2((float2)(acc.s0, acc.s1), 0, &(dst[0 * M + gid * 2]));
        vstore2((float2)(acc.s2, acc.s3), 0, &(dst[1 * M + gid * 2]));
        if (n_cols > 2) vstore2((float2)(acc.s4, acc.s5), 0, &(dst[2 * M + gid * 2]));
        if (n_cols > 3) vstore2((float2)(acc.s6, acc.s7), 0, &(dst[3 * M + gid * 2]));
    }
}
#undef MC_COL_Q41
#undef MC_DQ1_HI
#undef MC_DQ1_LO