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More cache improvements (#1015)

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* fix rotating kv cache for chat use case

* reorg + fixes to caching, unify prompt caching across types and use cases for e.g. caching during a chat

* nit in chat

* fix tests

* fix tests

* fix tests

* docs

* chat command

* comments + docs

* Define meta_state on all Cache implementations

* fixes + trim_prompt_cache api

* fix default model

---------

Co-authored-by: Angelos Katharopoulos <a_katharopoulos@apple.com>
This commit is contained in:
Awni Hannun
2024-10-07 20:45:51 -07:00
committed by GitHub
parent 9bc53fc210
commit fca087be49
43 changed files with 1151 additions and 691 deletions
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18
llms/mlx_lm/models/mamba.py
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@@ -7,6 +7,7 @@ import mlx.core as mx
import mlx.nn as nn
from .base import BaseModelArgs
from .cache import MambaCache
@dataclass
@@ -45,21 +46,6 @@ class ModelArgs(BaseModelArgs):
self.time_step_rank = math.ceil(self.hidden_size / 16)
class MambaCache:
def __init__(self):
self.cache = [None, None]
def __setitem__(self, idx, value):
self.cache[idx] = value
def __getitem__(self, idx):
return self.cache[idx]
@property
def state(self):
return self.cache
class DepthWiseConv1d(nn.Module):
def __init__(self, channels, kernel_size, bias=True, padding=0):
super().__init__()
@@ -223,7 +209,7 @@ class Model(nn.Module):
weights[k] = v.moveaxis(2, 1)
return weights
def make_cache(self, batch_size: int = 1):
def make_cache(self):
return [MambaCache() for _ in range(len(self.layers))]
@property