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iq1_m: scalar dot product

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This commit is contained in:
Iwan Kawrakow 2024-03-23 15:57:31 +02:00
parent 308c50d030
commit 64b9dfd7ff
1 changed files with 29 additions and 13 deletions
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42
ggml-quants.c
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@ -9757,12 +9757,12 @@ void ggml_vec_dot_iq1_m_q8_K (int n, float * restrict s, size_t bs, const void
UNUSED(by);
UNUSED(bs);
const block_iq1_s * restrict x = vx;
const block_iq1_m * restrict x = vx;
const block_q8_K * restrict y = vy;
const int nb = n / QK_K;
#if defined __ARM_NEON
#if defined z__ARM_NEON
ggml_int8x16x4_t q1b;
ggml_int8x16x4_t q8b;
@ -9807,7 +9807,7 @@ void ggml_vec_dot_iq1_m_q8_K (int n, float * restrict s, size_t bs, const void
*s = sumf;
#elif defined __AVX2__
#elif defined z__AVX2__
__m256 accum = _mm256_setzero_ps();
float accum1 = 0;
@ -9850,31 +9850,47 @@ void ggml_vec_dot_iq1_m_q8_K (int n, float * restrict s, size_t bs, const void
#else
iq1m_scale_t scale;
int sum1[2], sum2[2], delta[4];
float sumf = 0;
for (int i = 0; i < nb; i++) {
const int8_t * q8 = y[i].qs;
const uint8_t * qs = x[i].qs;
const uint16_t * qh = x[i].qh;
const uint8_t * qh = x[i].qh;
const uint16_t * sc = (const uint16_t *)x[i].scales;
int sumi = 0, sumi1 = 0;
scale.u16 = (sc[0] >> 12) | ((sc[1] >> 8) & 0x00f0) | ((sc[2] >> 4) & 0x0f00) | (sc[3] & 0xf000);
int sumi1 = 0, sumi2 = 0;
for (int ib = 0; ib < QK_K/32; ++ib) {
const int ls = 2*((qh[ib] >> 12) & 7) + 1;
const int delta = qh[ib] & 0x8000 ? -1 : 1;
int lsum = 0;
delta[0] = qh[0] & 0x08 ? -1 : 1;
delta[1] = qh[0] & 0x80 ? -1 : 1;
delta[2] = qh[1] & 0x08 ? -1 : 1;
delta[3] = qh[1] & 0x80 ? -1 : 1;
sum1[0] = sum1[1] = sum2[0] = sum2[1] = 0;
for (int l = 0; l < 4; ++l) {
const int8_t * grid = (const int8_t *)(iq1s_grid + (qs[l] | (((qh[ib] >> 3*l) & 7) << 8)));
const int8_t * grid = (const int8_t *)(iq1s_grid + (qs[l] | (((uint16_t)qh[l/2] << (8 - 4*(l%2))) & 0x700)));
int lsum1 = 0, lsum2 = 0;
for (int j = 0; j < 8; ++j) {
lsum += q8[j] * grid[j];
lsum1 += q8[j] * grid[j];
lsum2 += q8[j];
}
q8 += 8;
sum1[l/2] += lsum1;
sum2[l/2] += lsum2*delta[l];
}
sumi += ls * lsum;
sumi1 += ls * delta * (y[i].bsums[2*ib+0] + y[i].bsums[2*ib+1]);
const int ls1 = 2*((sc[ib/2] >> (6*(ib%2)+0)) & 0x7) + 1;
const int ls2 = 2*((sc[ib/2] >> (6*(ib%2)+3)) & 0x7) + 1;
sumi1 += sum1[0] * ls1 + sum1[1] * ls2;
sumi2 += sum2[0] * ls1 + sum2[1] * ls2;
qs += 4;
qh += 2;
}
sumf += GGML_FP16_TO_FP32(x[i].d) * y[i].d * (sumi + IQ1S_DELTA * sumi1);
sumf += GGML_FP16_TO_FP32(scale.fp16) * y[i].d * (sumi1 + IQ1M_DELTA * sumi2);
}
*s = sumf;