ikawrakow/ik_llama.cpp
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IQ1_M_R4: better 1.75 bpw quants (#187)

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* iq1_m_r4: basics (quantize/dequantize)

* iq1_m_r4: Zen4 gemm

* iq1_m_r4: neon gemm

* iq1_m_r4: switch to q8_0_x4 also on AVX2/Zen4

With the deltas being per group of 8, we cannot make use
of the q8 sums stored in q8_1, so we get a tiny gain by
using q8_0_x4.

* iq1_m_r4: rename mul_mat_iq1_m_r4_q8_1 to mul_mat_iq1_m_r4_q8_0

---------

Co-authored-by: Iwan Kawrakow <iwan.kawrakow@gmail.com>
This commit is contained in:
Kawrakow
2025-02-06 14:08:52 +02:00
committed by GitHub
parent 1b64fb3ed5
commit 7c94c3da56
11 changed files with 553 additions and 230 deletions
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ggml/include/ggml.h
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@@ -432,6 +432,7 @@ extern "C" {
GGML_TYPE_IQ3_S_R4 = 221,
GGML_TYPE_IQ2_S_R4 = 222,
GGML_TYPE_IQ4_XS_R4 = 223,
GGML_TYPE_IQ1_M_R4 = 229,
GGML_TYPE_BF16_R16 = 230,
GGML_TYPE_Q6_0_R4 = 233,
GGML_TYPE_IQ2_BN_R4 = 335,
@@ -516,6 +517,7 @@ extern "C" {
GGML_FTYPE_MOSTLY_IQ3_S_R4 = 220, // except 1d tensors
GGML_FTYPE_MOSTLY_IQ2_S_R4 = 221, // except 1d tensors
GGML_FTYPE_MOSTLY_IQ4_XS_R4 = 222, // except 1d tensors
GGML_FTYPE_MOSTLY_IQ1_M_R4 = 223, // except 1d tensors
GGML_FTYPE_MOSTLY_BF16_R16 = 224, // except 1d tensors
GGML_FTYPE_MOSTLY_Q6_0_R4 = 227, // except 1d tensors
GGML_FTYPE_MOSTLY_IQ2_BN_R4 = 329, // except 1d tensors