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ggml : activate s390x simd for Q3_K (llama/13301)

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Signed-off-by: Aaron Teo <aaron.teo1@ibm.com>
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Aaron Teo 2025-05-05 01:49:12 +08:00 committed by Georgi Gerganov
parent 7fa8bb303f
commit e1bdd148c5
1 changed files with 111 additions and 0 deletions
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111
ggml/src/ggml-cpu/ggml-cpu-quants.c
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@ -6590,7 +6590,118 @@ void ggml_vec_dot_q3_K_q8_K(int n, float * GGML_RESTRICT s, size_t bs, const voi
}
*s = hsum_float_8(acc);
#elif defined(__VXE__) || defined(__VXE2__)
uint32_t aux[3];
uint32_t utmp[4];
const int32x4_t v_z = vec_splat_s32(0);
const uint8x16_t v_3m = vec_splat_u8(0x03);
const uint8x16_t v_0c = vec_splat_u8(1);
const uint8x16_t v_1c = vec_sl(v_0c, 1);
const uint8x16_t v_2c = vec_sl(v_0c, 2);
const uint8x16_t v_3c = vec_sl(v_0c, 3);
uint8x16_t q3h[4];
uint8x16_t q3b[2];
int8x16_t q3bytes[4];
int8x16_t q8bytes[4];
uint8x16_t qhbits[2];
float sum = 0;
for (int i = 0; i < nb; ++i) {
const float d = y[i].d * GGML_FP16_TO_FP32(x[i].d);
const uint8_t * restrict x0l = x[i].qs;
const uint8_t * restrict x0h = x[i].hmask;
const int8_t * restrict y0 = y[i].qs;
qhbits[0] = vec_xl(0 , x0h);
qhbits[1] = vec_xl(16, x0h);
int32_t isum = 0;
memcpy(aux, x[i].scales, 12);
utmp[3] = ((aux[1] >> 4) & kmask2) | (((aux[2] >> 6) & kmask1) << 4);
utmp[2] = ((aux[0] >> 4) & kmask2) | (((aux[2] >> 4) & kmask1) << 4);
utmp[1] = (aux[1] & kmask2) | (((aux[2] >> 2) & kmask1) << 4);
utmp[0] = (aux[0] & kmask2) | (((aux[2] >> 0) & kmask1) << 4);
int8_t * scale = (int8_t *)utmp;
for (int j = 0; j < 16; ++j) scale[j] -= 32;
for (int j = 0; j < QK_K/128; ++j) {
int32x4_t isum0, isum1, isum2, isum3;
q3b[0] = vec_xl(0 , x0l);
q3b[1] = vec_xl(16, x0l);
x0l += 32;
q8bytes[0] = vec_xl(0 , y0);
q8bytes[1] = vec_xl(16 , y0);
q8bytes[2] = vec_xl(32 , y0);
q8bytes[3] = vec_xl(48 , y0);
q8bytes[4] = vec_xl(64 , y0);
q8bytes[5] = vec_xl(80 , y0);
q8bytes[6] = vec_xl(96 , y0);
q8bytes[7] = vec_xl(112, y0);
y0 += 128;
q3h[0] = vec_sl(vec_andc(v_0c, qhbits[0]), 2);
q3h[1] = vec_sl(vec_andc(v_0c, qhbits[1]), 2);
q3h[2] = vec_sl(vec_andc(v_1c, qhbits[0]), 1);
q3h[3] = vec_sl(vec_andc(v_1c, qhbits[1]), 1);
q3bytes[0] = vec_sub((int8x16_t)vec_and(q3b[0], v_3m), (int8x16_t)q3h[0]);
q3bytes[1] = vec_sub((int8x16_t)vec_and(q3b[1], v_3m), (int8x16_t)q3h[1]);
q3bytes[2] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[0], 2), v_3m), (int8x16_t)q3h[2]);
q3bytes[3] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[1], 2), v_3m), (int8x16_t)q3h[3]);
isum0 = ggml_vec_dot(v_z, q3bytes[0], q8bytes[0]);
isum1 = ggml_vec_dot(v_z, q3bytes[1], q8bytes[1]);
isum2 = ggml_vec_dot(v_z, q3bytes[2], q8bytes[2]);
isum3 = ggml_vec_dot(v_z, q3bytes[3], q8bytes[3]);
isum += (isum0[0] + isum0[1] + isum0[2] + isum0[3]) * scale[0];
isum += (isum1[0] + isum1[1] + isum1[2] + isum1[3]) * scale[1];
isum += (isum2[0] + isum2[1] + isum2[2] + isum2[3]) * scale[2];
isum += (isum3[0] + isum3[1] + isum3[2] + isum3[3]) * scale[3];
scale += 4;
q3h[0] = vec_andc(v_2c, qhbits[0]);
q3h[1] = vec_andc(v_2c, qhbits[1]);
q3h[2] = vec_sr(vec_andc(v_3c, qhbits[0]), 1);
q3h[3] = vec_sr(vec_andc(v_3c, qhbits[1]), 1);
q3bytes[0] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[0], 4), v_3m), (int8x16_t)q3h[0]);
q3bytes[1] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[1], 4), v_3m), (int8x16_t)q3h[1]);
q3bytes[2] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[0], 6), v_3m), (int8x16_t)q3h[2]);
q3bytes[3] = vec_sub((int8x16_t)vec_and(vec_sr(q3b[1], 6), v_3m), (int8x16_t)q3h[3]);
isum0 = ggml_vec_dot(v_z, q3bytes[0], q8bytes[4]);
isum1 = ggml_vec_dot(v_z, q3bytes[1], q8bytes[5]);
isum2 = ggml_vec_dot(v_z, q3bytes[2], q8bytes[6]);
isum3 = ggml_vec_dot(v_z, q3bytes[3], q8bytes[7]);
isum += (isum0[0] + isum0[1] + isum0[2] + isum0[3]) * scale[0];
isum += (isum1[0] + isum1[1] + isum1[2] + isum1[3]) * scale[1];
isum += (isum2[0] + isum2[1] + isum2[2] + isum2[3]) * scale[2];
isum += (isum3[0] + isum3[1] + isum3[2] + isum3[3]) * scale[3];
scale += 4;
if (j == 0) {
qhbits[0] = vec_sr(qhbits[0], 4);
qhbits[1] = vec_sr(qhbits[1], 4);
}
}
sum += d * isum;
}
*s = sum;
#else
// scalar version
// This function is written like this so the compiler can manage to vectorize most of it