vbatts/llama.cpp
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iq1_m: Metal now works

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About the same performance as iq1_s.
This commit is contained in:
Iwan Kawrakow 2024-03-25 07:41:26 +01:00
parent 0e36afa0ca
commit 19fb974d77
1 changed files with 3 additions and 3 deletions
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ggml-metal.metal
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@ -4520,7 +4520,7 @@ void kernel_mul_mv_iq1_m_f32_impl(
device const block_iq1_m * xr = x + ibl;
device const uint8_t * qs = xr->qs + 4 * ib;
device const uint8_t * qh = xr->qh + 2 * ib;
device const uint16_t * sc = (device const uint16_t *)xr->scales + ib/2;
device const uint16_t * sc = (device const uint16_t *)xr->scales;
for (int row = 0; row < N_DST; row++) {
@ -4540,8 +4540,8 @@ void kernel_mul_mv_iq1_m_f32_impl(
}
const float delta1 = sumy[0] * (qh[0] & 0x08 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA) + sumy[1] * (qh[0] & 0x80 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA);
const float delta2 = sumy[2] * (qh[1] & 0x08 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA) + sumy[3] * (qh[1] & 0x80 ? -1 - IQ1M_DELTA : -1 + IQ1M_DELTA);
sumf[row] += (float)scale.f16 * ((sum[0] + delta1) * (2*((sc[0] >> (6*(ib%2)+0)) & 7) + 1) +
(sum[1] + delta2) * (2*((sc[0] >> (6*(ib%2)+3)) & 7) + 1));
sumf[row] += (float)scale.f16 * ((sum[0] + delta1) * (2*((sc[ib/2] >> (6*(ib%2)+0)) & 7) + 1) +
(sum[1] + delta2) * (2*((sc[ib/2] >> (6*(ib%2)+3)) & 7) + 1));
sc += nb*sizeof(block_iq1_m)/2;
qs += nb*sizeof(block_iq1_m);