ikawrakow/ik_llama.cpp
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iq4_ks_r4: slightly better Zen4

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Iwan Kawrakow
2024-12-18 18:45:08 +02:00
parent e232c1b785
commit 00452d4683
1 changed files with 4 additions and 2 deletions
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6
ggml/src/iqk/iqk_mul_mat.cpp
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@@ -3148,12 +3148,14 @@ static void mul_mat_iq4_ks_r4_q8_k(int n, const void * vx, size_t bx, const Data
}
}
#else
h_shift.vec = _mm256_slli_epi16(_mm256_and_si256(scales, _mm256_set1_epi8(1)), 1);
//h_shift.vec = _mm256_slli_epi16(_mm256_and_si256(scales, _mm256_set1_epi8(1)), 1);
h_shift.vec = _mm256_add_epi8(_mm256_set1_epi8(-64), _mm256_slli_epi16(_mm256_and_si256(scales, _mm256_set1_epi8(1)), 1));
#endif
for (int ib = 0; ib < QK_K/32; ++ib) {
#ifdef HAVE_FANCY_SIMD
auto iscales = _mm256_cvtepi8_epi32(_mm_set1_epi32(h.val[ib]));
auto ishifts = _mm256_add_epi32(_mm256_set1_epi32(-64), _mm256_cvtepi8_epi32(_mm_set1_epi32(h_shift.val[ib])));
//auto ishifts = _mm256_add_epi32(_mm256_set1_epi32(-64), _mm256_cvtepi8_epi32(_mm_set1_epi32(h_shift.val[ib])));
auto ishifts = _mm256_cvtepi8_epi32(_mm_set1_epi32(h_shift.val[ib]));
auto scales = _mm256_cvtepi32_ps(iscales);
auto scales_m = _mm256_mul_ps(scales, _mm256_cvtepi32_ps(ishifts));
for (int iy = 0; iy < nrc_y; ++iy) {