ikawrakow/ik_llama.cpp
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q8_0_r4: Zen4 matrix-vector specialization

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Iwan Kawrakow
2024-12-03 06:52:12 +02:00
parent fc781beec0
commit 4559dc5931
1 changed files with 79 additions and 44 deletions
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123
ggml/src/iqk/iqk_mul_mat.cpp
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@@ -2290,53 +2290,88 @@ static void mul_mat_q8_0_r4_q8_1(int n, const void * vx, size_t bx, const DataIn
Q8<nrc_y, block_q8_1_x4> q8(info);
int nb = n / QK8_0;
GGML_ASSERT(nb%4 == 0);
__m512 acc[2*nrc_y] = {};
__m512i qx[4];
auto m127 = _mm512_set1_epi8(127);
for (int ix = 0; ix < nrc_x; ix += 8) {
const block_q8_0_x4 * q8l = (const block_q8_0_x4 *)((const char *)vx + (ix+0)*bx);
const block_q8_0_x4 * q8h = (const block_q8_0_x4 *)((const char *)vx + (ix+4)*bx);
for (int ib4 = 0; ib4 < nb/4; ++ib4) {
for (int k = 0; k < 4; ++k) {
auto scales128 = _mm_cvtph_ps(_mm_loadl_epi64((const __m128i *)q8l[4*ib4+k].d));
auto scales1 = _mm256_set_m128(scales128, scales128);
scales128 = _mm_cvtph_ps(_mm_loadl_epi64((const __m128i *)q8h[4*ib4+k].d));
auto scales2 = _mm256_set_m128(scales128, scales128);
auto scales = _mm512_insertf32x8(_mm512_castps256_ps512(scales1), scales2, 1);
auto scales_m = _mm512_mul_ps(scales, _mm512_set1_ps(-63.5f));
qx[0] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+0)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+0), 1);
qx[1] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+1)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+1), 1);
qx[2] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+2)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+2), 1);
qx[3] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+3)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+3), 1);
qx[0] = _mm512_add_epi8(qx[0], m127);
qx[1] = _mm512_add_epi8(qx[1], m127);
qx[2] = _mm512_add_epi8(qx[2], m127);
qx[3] = _mm512_add_epi8(qx[3], m127);
for (int iy = 0; iy < nrc_y; ++iy) {
auto y8 = _mm256_loadu_si256((const __m256i*)q8.y[iy][ib4].qs+k);
auto y = _mm512_inserti32x8(_mm512_castsi256_si512(y8), y8, 1);
auto sumi = _mm512_setzero_si512();
sumi = _mm512_dpbusd_epi32(sumi, qx[0], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0x00)));
sumi = _mm512_dpbusd_epi32(sumi, qx[1], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0x55)));
sumi = _mm512_dpbusd_epi32(sumi, qx[2], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0xaa)));
sumi = _mm512_dpbusd_epi32(sumi, qx[3], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0xff)));
auto dy = _mm512_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k]));
acc[2*iy+0] = _mm512_fmadd_ps(_mm512_mul_ps(scales, dy), _mm512_cvtepi32_ps(sumi), acc[2*iy+0]);
acc[2*iy+1] = _mm512_fmadd_ps(scales_m, _mm512_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k+4])), acc[2*iy+1]);
if constexpr (nrc_y == 1) {
auto m127 = _mm256_set1_epi8(127);
auto m1 = _mm256_set1_epi16(1);
__m256 acc[nrc_y] = {};
for (int ix = 0; ix < nrc_x; ix += 4) {
const block_q8_0_x4 * iq8 = (const block_q8_0_x4 *)((const char *)vx + ix*bx);
for (int ib4 = 0; ib4 < nb/4; ++ib4) {
for (int k = 0; k < 4; ++k) {
auto scales128 = _mm_cvtph_ps(_mm_loadl_epi64((const __m128i *)iq8[4*ib4+k].d));
auto scales = _mm256_set_m128(scales128, scales128);
auto scales_m = _mm256_mul_ps(scales, _mm256_set1_ps(-63.5f));
auto q1 = _mm256_add_epi8(_mm256_loadu_si256((const __m256i *)iq8[4*ib4+k].qs+0), m127);
auto q2 = _mm256_add_epi8(_mm256_loadu_si256((const __m256i *)iq8[4*ib4+k].qs+1), m127);
auto q3 = _mm256_add_epi8(_mm256_loadu_si256((const __m256i *)iq8[4*ib4+k].qs+2), m127);
auto q4 = _mm256_add_epi8(_mm256_loadu_si256((const __m256i *)iq8[4*ib4+k].qs+3), m127);
for (int iy = 0; iy < nrc_y; ++iy) {
auto y = _mm256_loadu_si256((const __m256i*)q8.y[iy][ib4].qs+k);
auto sumi1 = _mm256_add_epi32(_mm256_madd_epi16(m1, _mm256_maddubs_epi16(q1, _mm256_shuffle_epi32(y, 0x00))),
_mm256_madd_epi16(m1, _mm256_maddubs_epi16(q2, _mm256_shuffle_epi32(y, 0x55))));
auto sumi2 = _mm256_add_epi32(_mm256_madd_epi16(m1, _mm256_maddubs_epi16(q3, _mm256_shuffle_epi32(y, 0xaa))),
_mm256_madd_epi16(m1, _mm256_maddubs_epi16(q4, _mm256_shuffle_epi32(y, 0xff))));
auto d4d8 = _mm256_mul_ps(scales, _mm256_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k])));
acc[iy] = _mm256_fmadd_ps(d4d8, _mm256_cvtepi32_ps(_mm256_add_epi32(sumi1, sumi2)), acc[iy]);
acc[iy] = _mm256_fmadd_ps(scales_m, _mm256_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k+4])), acc[iy]);
}
}
}
for (int iy = 0; iy < nrc_y; ++iy) {
auto sum = _mm_add_ps(_mm256_castps256_ps128(acc[iy]), _mm256_extractf128_ps(acc[iy], 1));
info.store(ix, iy, sum);
acc[iy] = _mm256_setzero_ps();
}
}
for (int iy = 0; iy < nrc_y; ++iy) {
auto sum512 = _mm512_add_ps(acc[2*iy+0], acc[2*iy+1]);
acc[2*iy+0] = acc[2*iy+1] = _mm512_setzero_ps();
auto sum1 = _mm_add_ps(_mm512_extractf32x4_ps(sum512, 0), _mm512_extractf32x4_ps(sum512, 1));
auto sum2 = _mm_add_ps(_mm512_extractf32x4_ps(sum512, 2), _mm512_extractf32x4_ps(sum512, 3));
info.store(ix+0, iy, sum1);
info.store(ix+4, iy, sum2);
} else {
__m512 acc[2*nrc_y] = {};
__m512i qx[4];
auto m127 = _mm512_set1_epi8(127);
for (int ix = 0; ix < nrc_x; ix += 8) {
const block_q8_0_x4 * q8l = (const block_q8_0_x4 *)((const char *)vx + (ix+0)*bx);
const block_q8_0_x4 * q8h = (const block_q8_0_x4 *)((const char *)vx + (ix+4)*bx);
for (int ib4 = 0; ib4 < nb/4; ++ib4) {
for (int k = 0; k < 4; ++k) {
auto scales128 = _mm_cvtph_ps(_mm_loadl_epi64((const __m128i *)q8l[4*ib4+k].d));
auto scales1 = _mm256_set_m128(scales128, scales128);
scales128 = _mm_cvtph_ps(_mm_loadl_epi64((const __m128i *)q8h[4*ib4+k].d));
auto scales2 = _mm256_set_m128(scales128, scales128);
auto scales = _mm512_insertf32x8(_mm512_castps256_ps512(scales1), scales2, 1);
auto scales_m = _mm512_mul_ps(scales, _mm512_set1_ps(-63.5f));
qx[0] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+0)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+0), 1);
qx[1] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+1)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+1), 1);
qx[2] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+2)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+2), 1);
qx[3] = _mm512_inserti32x8(_mm512_castsi256_si512(_mm256_loadu_si256((const __m256i *)q8l[4*ib4+k].qs+3)),
_mm256_loadu_si256((const __m256i *)q8h[4*ib4+k].qs+3), 1);
qx[0] = _mm512_add_epi8(qx[0], m127);
qx[1] = _mm512_add_epi8(qx[1], m127);
qx[2] = _mm512_add_epi8(qx[2], m127);
qx[3] = _mm512_add_epi8(qx[3], m127);
for (int iy = 0; iy < nrc_y; ++iy) {
auto y8 = _mm256_loadu_si256((const __m256i*)q8.y[iy][ib4].qs+k);
auto y = _mm512_inserti32x8(_mm512_castsi256_si512(y8), y8, 1);
auto sumi = _mm512_setzero_si512();
sumi = _mm512_dpbusd_epi32(sumi, qx[0], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0x00)));
sumi = _mm512_dpbusd_epi32(sumi, qx[1], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0x55)));
sumi = _mm512_dpbusd_epi32(sumi, qx[2], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0xaa)));
sumi = _mm512_dpbusd_epi32(sumi, qx[3], _mm512_shuffle_epi32(y, _MM_PERM_ENUM(0xff)));
auto dy = _mm512_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k]));
acc[2*iy+0] = _mm512_fmadd_ps(_mm512_mul_ps(scales, dy), _mm512_cvtepi32_ps(sumi), acc[2*iy+0]);
acc[2*iy+1] = _mm512_fmadd_ps(scales_m, _mm512_set1_ps(GGML_FP16_TO_FP32(q8.y[iy][ib4].d[k+4])), acc[2*iy+1]);
}
}
}
for (int iy = 0; iy < nrc_y; ++iy) {
auto sum512 = _mm512_add_ps(acc[2*iy+0], acc[2*iy+1]);
acc[2*iy+0] = acc[2*iy+1] = _mm512_setzero_ps();
auto sum1 = _mm_add_ps(_mm512_extractf32x4_ps(sum512, 0), _mm512_extractf32x4_ps(sum512, 1));
auto sum2 = _mm_add_ps(_mm512_extractf32x4_ps(sum512, 2), _mm512_extractf32x4_ps(sum512, 3));
info.store(ix+0, iy, sum1);
info.store(ix+4, iy, sum2);
}
}
}
}