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Quantized KV Cache (#1075)

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* add QuantizedKVCache

* simplify

* add tests

* single sdpa function

* fix sed

* in place

* fix tests

* support different k and v head dims
This commit is contained in:
Alex Barron
2024-10-31 16:59:52 -07:00
committed by GitHub
parent 9f34fdbda4
commit 85ffd2c96a
32 changed files with 411 additions and 85 deletions
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6
llms/mlx_lm/models/phi3.py
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@@ -6,7 +6,7 @@ from typing import Any, Dict, List, Optional, Tuple, Union
import mlx.core as mx
import mlx.nn as nn
from .base import BaseModelArgs, create_attention_mask
from .base import BaseModelArgs, create_attention_mask, scaled_dot_product_attention
from .su_rope import SuScaledRotaryEmbedding
@@ -107,8 +107,8 @@ class Attention(nn.Module):
queries = self.rope(queries)
keys = self.rope(keys)
output = mx.fast.scaled_dot_product_attention(
queries, keys, values, scale=self.scale, mask=mask
output = scaled_dot_product_attention(
queries, keys, values, cache=cache, scale=self.scale, mask=mask
)
output = output.transpose(0, 2, 1, 3).reshape(B, L, -1)
return self.o_proj(output)