diff options
Diffstat (limited to 'ggml/src/iqk/iqk_quantize.cpp')
| -rw-r--r-- | ggml/src/iqk/iqk_quantize.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/ggml/src/iqk/iqk_quantize.cpp b/ggml/src/iqk/iqk_quantize.cpp index 66cf32bc..93a3a0ea 100644 --- a/ggml/src/iqk/iqk_quantize.cpp +++ b/ggml/src/iqk/iqk_quantize.cpp @@ -3942,3 +3942,124 @@ void vec_dot_iq2_bn_r4_q8_K64(int n, float * s, size_t bs, const void * vx, size GGML_UNUSED(by); } +// +// ========================================= q4_k_r4 +// + +void quantize_row_q4_k_r4_ref(const float * x, block_q4_k_r4 * y, int64_t k) { + quantize_q4_k_r4(x, (void *)y, 4, k/4, nullptr); +} + +void quantize_row_q4_k_r4(const float * x, void * y, int64_t k) { + quantize_q4_k_r4(x, y, 4, k/4, nullptr); +} + +namespace { +inline void get_scale_min_k4(int j, const uint8_t * q, uint8_t& d, uint8_t& m) { + if (j < 4) { + d = q[j] & 63; m = q[j + 4] & 63; + } else { + d = (q[j+4] & 0xF) | ((q[j-4] >> 6) << 4); + m = (q[j+4] >> 4) | ((q[j-0] >> 6) << 4); + } +} +inline void convert_q4_k(const block_q4_K& x, uint8_t * L, uint8_t * Ld, uint8_t * Lm) { + for (int ib64 = 0; ib64 < QK_K/64; ++ib64) { + get_scale_min_k4(2*ib64+0, x.scales, Ld[2*ib64+0], Lm[2*ib64+0]); + get_scale_min_k4(2*ib64+1, x.scales, Ld[2*ib64+1], Lm[2*ib64+1]); + for (int j = 0; j < 32; ++j) { + L[64*ib64+j+ 0] = x.qs[32*ib64+j] & 0xf; + L[64*ib64+j+32] = x.qs[32*ib64+j] >> 4; + } + } +} +} + +static void repack_q4_k(int nrows, int n_per_row, const block_q4_K * x, block_q4_k_r4 * y) { + GGML_ASSERT(nrows%4 == 0); + GGML_ASSERT(n_per_row%QK_K == 0); + int nblock = n_per_row/QK_K; + const block_q4_K * x4[4]; + uint8_t L[QK_K], Ld[QK_K/32], Lm[QK_K/32]; + for (int row = 0; row < nrows; row += 4) { + for (int k = 0; k < 4; ++k) x4[k] = x + nblock*k; + for (int ibl = 0; ibl < nblock; ++ibl) { + std::memset(y[ibl].scales_l, 0, QK_K/8); + std::memset(y[ibl].scales_h, 0, QK_K/16); + for (int k = 0; k < 4; ++k) { + y[ibl].d[k+0] = x4[k][ibl].d; + y[ibl].d[k+4] = x4[k][ibl].dmin; + convert_q4_k(x4[k][ibl], L, Ld, Lm); + for (int ib = 0; ib < QK_K/32; ++ib) { + y[ibl].scales_l[4*ib+k] = (Ld[ib] & 0xf) | ((Lm[ib] & 0xf) << 4); + uint8_t h = (Ld[ib] >> 4) | ((Lm[ib] >> 4) << 2); + y[ibl].scales_h[(4*ib+k)%16] |= (h << 4*((4*ib+k)/16)); + for (int i = 0; i < 4; ++i) { + y[ibl].qs[64*ib+4*k+i+ 0] = L[32*ib+i+ 0] | (L[32*ib+i+ 8] << 4); + y[ibl].qs[64*ib+4*k+i+16] = L[32*ib+i+16] | (L[32*ib+i+24] << 4); + y[ibl].qs[64*ib+4*k+i+32] = L[32*ib+i+ 4] | (L[32*ib+i+12] << 4); + y[ibl].qs[64*ib+4*k+i+48] = L[32*ib+i+20] | (L[32*ib+i+28] << 4); + } + } + } + } + x += 4*nblock; + y += nblock; + } +} + +size_t quantize_q4_k_r4(const float * src, void * dst, int64_t nrows, int64_t n_per_row, const float * imatrix) { + GGML_ASSERT(nrows%4 == 0); + GGML_ASSERT(n_per_row%QK_K == 0); + char * qcur = (char *)dst; + auto row_size = ggml_row_size(GGML_TYPE_Q4_K, n_per_row); + std::vector<char> qtmp(4*row_size); + for (int row = 0; row < nrows; row += 4) { + quantize_q4_K(src, (void *)qtmp.data(), 4, n_per_row, imatrix); + repack_q4_k(4, n_per_row, (const block_q4_K *)qtmp.data(), (block_q4_k_r4 *)qcur); + qcur += 4*row_size; + src += 4*n_per_row; + } + return nrows*row_size; +} + +void dequantize_row_q4_k_r4(const block_q4_k_r4 * x, float * y, int64_t k) { + auto n_per_row = k/4; + float * y4[4] = {y, y + n_per_row, y + 2*n_per_row, y + 3*n_per_row}; + int nblock = n_per_row/QK_K; + for (int ibl = 0; ibl < nblock; ++ibl) { + for (int k = 0; k < 4; ++k) { + const float d = GGML_FP16_TO_FP32(x[ibl].d[k+0]); + const float m = GGML_FP16_TO_FP32(x[ibl].d[k+4]); + for (int ib = 0; ib < QK_K/32; ++ib) { + int is = 4*ib + k; + float dl = d * ((x[ibl].scales_l[is] & 0xf) | (((x[ibl].scales_h[is%16] >> 4*(is/16)) & 0x03) << 4)); + float ml = m * ((x[ibl].scales_l[is] >> 4) | (((x[ibl].scales_h[is%16] >> 4*(is/16)) & 0x0c) << 2)); + for (int i = 0; i < 4; ++i) { + y4[k][QK_K*ibl+32*ib+i+ 0] = dl * (x[ibl].qs[64*ib+4*k+i+ 0] & 0xf) - ml; + y4[k][QK_K*ibl+32*ib+i+ 8] = dl * (x[ibl].qs[64*ib+4*k+i+ 0] >> 4) - ml; + y4[k][QK_K*ibl+32*ib+i+16] = dl * (x[ibl].qs[64*ib+4*k+i+16] & 0xf) - ml; + y4[k][QK_K*ibl+32*ib+i+24] = dl * (x[ibl].qs[64*ib+4*k+i+16] >> 4) - ml; + y4[k][QK_K*ibl+32*ib+i+ 4] = dl * (x[ibl].qs[64*ib+4*k+i+32] & 0xf) - ml; + y4[k][QK_K*ibl+32*ib+i+12] = dl * (x[ibl].qs[64*ib+4*k+i+32] >> 4) - ml; + y4[k][QK_K*ibl+32*ib+i+20] = dl * (x[ibl].qs[64*ib+4*k+i+48] & 0xf) - ml; + y4[k][QK_K*ibl+32*ib+i+28] = dl * (x[ibl].qs[64*ib+4*k+i+48] >> 4) - ml; + } + } + } + } +} + +void vec_dot_q4_k_r4_q8_k(int n, float * s, size_t bs, const void * vx, size_t bx, const void * vy, size_t by, int nrc) { +#if GGML_USE_IQK_MULMAT + if (iqk_mul_mat(1, 1, n, GGML_TYPE_Q4_K_R4, vx, 0, GGML_TYPE_Q8_K, vy, 0, s, 0, 0, 1)) { + return; + } +#endif + GGML_ASSERT(n%QK4_NL == 0); + GGML_ASSERT(nrc == 1); + GGML_UNUSED(bs); + GGML_UNUSED(bx); + GGML_UNUSED(by); +} + |