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Unverified Commit 75bbfd5b authored by Joao Gante's avatar Joao Gante Committed by GitHub
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Cache: Static cache as a standalone object (#30476)

parent 0ae789e0
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docs/source/en/internal/generation_utils.md
View file @ 75bbfd5b
......@@ -362,3 +362,4 @@ A [`Constraint`] can be used to force the generation to include specific tokens
[[autodoc]] StaticCache
- update
- get_seq_length
- reorder_cache
docs/source/en/llm_optims.md
View file @ 75bbfd5b
......@@ -65,13 +65,12 @@ tokenizer.batch_decode(outputs, skip_special_tokens=True)
['The theory of special relativity states 1. The speed of light is constant in all inertial reference']
```
</hfoption>
<hfoption id="setup_cache">
Under the hood, `generate` will attempt to reuse the same cache object, removing the need for re-compilation at each call. However, if the batch size or the maximum output length increase between calls, the cache will have to be reinitialized, triggering a new compilation.
> [!WARNING]
> The `_setup_cache` method is an internal and private method that is still under development. This means it may not be backward compatible and the API design may change in the future.
</hfoption>
<hfoption id="Static Cache">
The `_setup_cache` method doesn't support [`~GenerationMixin.generate`] yet, so this method is a bit more involved. You'll need to write your own function to decode the next token given the current token and position and cache position of previously generated tokens.
A [`StaticCache`] object can be passed to the model's forward pass under the `past_key_values` argument, enabling the use of this object as a static kv-cache. Using this strategy, you can write your own function to decode the next token given the current token and position and cache position of previously generated tokens. You can also pass the [`StaticCache`] object to [`~GenerationMixin.generate`] and use it across calls, like you would do with a dynamic cache.
```py
from transformers import LlamaTokenizer, LlamaForCausalLM, StaticCache, logging
......@@ -90,17 +89,22 @@ tokenizer = LlamaTokenizer.from_pretrained("meta-llama/Llama-2-7b-hf", pad_token
model = LlamaForCausalLM.from_pretrained("meta-llama/Llama-2-7b-hf", device_map="sequential")
inputs = tokenizer(prompts, return_tensors="pt", padding=True).to(model.device)
def decode_one_tokens(model, cur_token, input_pos, cache_position):
def decode_one_tokens(model, cur_token, input_pos, cache_position, past_key_values):
logits = model(
cur_token, position_ids=input_pos, cache_position=cache_position, return_dict=False, use_cache=True
cur_token,
position_ids=input_pos,
cache_position=cache_position,
past_key_values=past_key_values,
return_dict=False,
use_cache=True
)[0]
new_token = torch.argmax(logits[:, -1], dim=-1)[:, None]
return new_token
```
There are a few important things you must do to enable static kv-cache and torch.compile with the `_setup_cache` method:
There are a few important things you must do to enable static kv-cache and torch.compile with the `StaticCache` method:
1. Access the model's `_setup_cache` method and pass it the [`StaticCache`] class. This is a more flexible method because it allows you to configure parameters like the maximum batch size and sequence length.
1. Initialize the [`StaticCache`] instance before using the model for inference. There you can configure parameters like the maximum batch size and sequence length.
2. Call torch.compile on the model to compile the forward pass with the static kv-cache.
......@@ -109,14 +113,18 @@ There are a few important things you must do to enable static kv-cache and torch
```py
batch_size, seq_length = inputs["input_ids"].shape
with torch.no_grad():
model._setup_cache(StaticCache, 2, max_cache_len=4096)
past_key_values = StaticCache(
config=model.config, max_batch_size=2, max_cache_len=4096, device=torch_device, dtype=model.dtype
)
cache_position = torch.arange(seq_length, device=torch_device)
generated_ids = torch.zeros(
batch_size, seq_length + NUM_TOKENS_TO_GENERATE + 1, dtype=torch.int, device=torch_device
)
generated_ids[:, cache_position] = inputs["input_ids"].to(torch_device).to(torch.int)
logits = model(**inputs, cache_position=cache_position, return_dict=False, use_cache=True)[0]
logits = model(
**inputs, cache_position=cache_position, past_key_values=past_key_values,return_dict=False, use_cache=True
)[0]
next_token = torch.argmax(logits[:, -1], dim=-1)[:, None]
generated_ids[:, seq_length] = next_token[:, 0]
......@@ -124,7 +132,7 @@ with torch.no_grad():
cache_position = torch.tensor([seq_length + 1], device=torch_device)
for _ in range(1, NUM_TOKENS_TO_GENERATE):
with torch.backends.cuda.sdp_kernel(enable_flash=False, enable_mem_efficient=False, enable_math=True):
next_token = decode_one_tokens(model, next_token.clone(), None, cache_position)
next_token = decode_one_tokens(model, next_token.clone(), None, cache_position, past_key_values)
generated_ids[:, cache_position] = next_token.int()
cache_position += 1
......@@ -134,6 +142,9 @@ text
'My favorite all time favorite condiment is ketchup. I love it on everything. I love it on my eggs, my fries, my chicken, my burgers, my hot dogs, my sandwiches, my salads, my p']
```
> [!TIP]
> If you want to reuse the [`StaticCache`] object on a new prompt, be sure to reset its contents with the `.reset()` method
</hfoption>
</hfoptions>
......
src/transformers/cache_utils.py
View file @ 75bbfd5b
......@@ -44,6 +44,7 @@ class Cache:
def get_seq_length(self, layer_idx: Optional[int] = 0) -> int:
"""Returns the sequence length of the cached states. A layer index can be optionally passed."""
# TODO: deprecate this function in favor of `cache_position`
raise NotImplementedError("Make sure to implement `get_seq_length` in a subclass.")
def get_max_length(self) -> Optional[int]:
......@@ -61,6 +62,14 @@ class Cache:
return max_length - new_seq_length
return previous_seq_length
def reorder_cache(self, beam_idx: torch.LongTensor):
"""Reorders the cache for beam search, given the selected beam indices."""
for layer_idx in range(len(self.key_cache)):
device = self.key_cache[layer_idx].device
self.key_cache[layer_idx] = self.key_cache[layer_idx].index_select(0, beam_idx.to(device))
device = self.value_cache[layer_idx].device
self.value_cache[layer_idx] = self.value_cache[layer_idx].index_select(0, beam_idx.to(device))
@property
def seen_tokens(self):
logger.warning_once(
......@@ -150,6 +159,7 @@ class DynamicCache(Cache):
def get_seq_length(self, layer_idx: Optional[int] = 0) -> int:
"""Returns the sequence length of the cached states. A layer index can be optionally passed."""
# TODO: deprecate this function in favor of `cache_position`
if len(self.key_cache) <= layer_idx:
return 0
return self.key_cache[layer_idx].shape[-2]
......@@ -158,14 +168,6 @@ class DynamicCache(Cache):
"""Returns the maximum sequence length of the cached states. DynamicCache does not have a maximum length."""
return None
def reorder_cache(self, beam_idx: torch.LongTensor):
"""Reorders the cache for beam search, given the selected beam indices."""
for layer_idx in range(len(self.key_cache)):
device = self.key_cache[layer_idx].device
self.key_cache[layer_idx] = self.key_cache[layer_idx].index_select(0, beam_idx.to(device))
device = self.value_cache[layer_idx].device
self.value_cache[layer_idx] = self.value_cache[layer_idx].index_select(0, beam_idx.to(device))
def to_legacy_cache(self) -> Tuple[Tuple[torch.Tensor], Tuple[torch.Tensor]]:
"""Converts the `DynamicCache` instance into the its equivalent in the legacy cache format."""
legacy_cache = ()
......@@ -244,6 +246,7 @@ class SinkCache(Cache):
def get_seq_length(self, layer_idx: Optional[int] = 0) -> int:
"""Returns the sequence length of the cached states. A layer index can be optionally passed."""
# TODO: deprecate this function in favor of `cache_position`
# Workaround to make 'key_states.shape[-2] + past_key_value.get_seq_length(self.layer_idx)' <= window_length
if len(self.key_cache) <= layer_idx:
return 0
......@@ -332,14 +335,6 @@ class SinkCache(Cache):
return self.key_cache[layer_idx], self.value_cache[layer_idx]
def reorder_cache(self, beam_idx: torch.LongTensor):
"""Reorders the cache for beam search, given the selected beam indices."""
for layer_idx in range(len(self.key_cache)):
device = self.key_cache[layer_idx].device
self.key_cache[layer_idx] = self.key_cache[layer_idx].index_select(0, beam_idx.to(device))
device = self.value_cache[layer_idx].device
self.value_cache[layer_idx] = self.value_cache[layer_idx].index_select(0, beam_idx.to(device))
class StaticCache(Cache):
"""
......@@ -347,8 +342,7 @@ class StaticCache(Cache):
Parameters:
config (`PretrainedConfig):
The configuration file defining the `max_position_embeddings`, `hidden_size` and `num_attention_heads`
required to initialize the static cache.
The configuration file defining the shape-related attributes required to initialize the static cache.
max_batch_size (`int`):
The maximum batch size with which the model will be used.
max_cache_len (`int`):
......@@ -373,9 +367,18 @@ class StaticCache(Cache):
config.num_attention_heads if config.num_key_value_heads is None else config.num_key_value_heads
)
self.key_cache: List[torch.Tensor] = []
self.value_cache: List[torch.Tensor] = []
cache_shape = (max_batch_size, self.num_key_value_heads, self.max_cache_len, self.head_dim)
self.key_cache: torch.Tensor = torch.zeros(cache_shape, dtype=self.dtype, device=device)
self.value_cache: torch.Tensor = torch.zeros(cache_shape, dtype=self.dtype, device=device)
for _ in range(config.num_hidden_layers):
# Note: `mark_static_address` is used to tag the cache as an fixed data pointer, preventing cuda graph
# breaks when updating the cache.
new_layer_key_cache = torch.zeros(cache_shape, dtype=self.dtype, device=device)
new_layer_value_cache = torch.zeros(cache_shape, dtype=self.dtype, device=device)
torch._dynamo.mark_static_address(new_layer_key_cache)
torch._dynamo.mark_static_address(new_layer_value_cache)
self.key_cache.append(new_layer_key_cache)
self.value_cache.append(new_layer_value_cache)
def update(
self,
......@@ -394,42 +397,37 @@ class StaticCache(Cache):
value_states (`torch.Tensor`):
The new value states to cache.
layer_idx (`int`):
The index of the layer to cache the states for. Kept for backward compatibility
The index of the layer to cache the states for.
cache_kwargs (`Dict[str, Any]`, `optional`):
Additional arguments for the cache subclass. The `StaticCache` just needs the `q_len`
to know how much of the cache it should overwrite.
Additional arguments for the cache subclass. The `StaticCache` needs the `cache_position` input
to know how where to write in the cache.
Return:
A tuple containing the updated key and value states.
"""
new_cache_positions = cache_kwargs.get("cache_position")
k_out = self.key_cache
v_out = self.value_cache
cache_position = cache_kwargs.get("cache_position")
k_out = self.key_cache[layer_idx]
v_out = self.value_cache[layer_idx]
k_out[:, :, new_cache_positions] = key_states
v_out[:, :, new_cache_positions] = value_states
k_out[:, :, cache_position] = key_states
v_out[:, :, cache_position] = value_states
return k_out, v_out
def get_seq_length(self, layer_idx: Optional[int] = 0) -> int:
"""Returns the sequence length of the cached states that were seen by the model. `layer_idx` kept for BC"""
"""Returns the sequence length of the cached states that were seen by the model."""
# Occupied cache == any slot in the 3rd dim (sequence length) holds a non-zero value. To save on compute, let's
# limit the check to the first batch member and head dimension.
# TODO: This is error prone, a filled cache may be `0.0`. Let's use a stateless integer instead, after
# https://github.com/pytorch/pytorch/issues/120248 is fixed
return (self.key_cache[0, 0].any(dim=-1)).sum()
# TODO: deprecate this function in favor of `cache_position`
return (self.key_cache[layer_idx][0, 0].any(dim=-1)).sum()
def get_max_length(self) -> Optional[int]:
"""Returns the maximum sequence length of the cached states. DynamicCache does not have a maximum length."""
"""Returns the maximum sequence length of the cached states."""
return self.max_cache_len
def reorder_cache(self, beam_idx: torch.LongTensor):
"""Reorders the cache for beam search, given the selected beam indices."""
device = self.key_cache.device
self.key_cache = self.key_cache.index_select(0, beam_idx.to(device))
device = self.value_cache.device
self.value_cache = self.value_cache.index_select(0, beam_idx.to(device))
def to_legacy_cache(self):
"""Dummy function for BC. We have to keep it because otherwise the call in the forward of models will break it"""
return None
def reset(self):
"""Resets the cache values while preserving the objects"""
for layer_idx in range(len(self.key_cache)):
# In-place ops prevent breaking the static address
self.key_cache[layer_idx].zero_()
self.value_cache[layer_idx].zero_()
src/transformers/generation/utils.py
View file @ 75bbfd5b
......@@ -1310,6 +1310,34 @@ class GenerationMixin:
model_kwargs["cache_position"] = torch.arange(past_length, cur_len, device=input_ids.device)
return model_kwargs
def _get_static_cache(self, max_batch_size: int, max_cache_len: int) -> StaticCache:
"""
Sets a static cache for `generate`, that will persist across calls. A new cache will only be initialized a
new `generate` call requires a larger cache.
Returns the resulting static cache object.
"""
needs_new_cache = (
not hasattr(self, "_static_cache")
or self._static_cache.max_batch_size < max_batch_size
or self._static_cache.max_cache_len < max_cache_len
)
if needs_new_cache:
if hasattr(self.config, "_pre_quantization_dtype"):
cache_dtype = self.config._pre_quantization_dtype
else:
cache_dtype = self.dtype
self._static_cache = StaticCache(
config=self.config,
max_batch_size=max_batch_size,
max_cache_len=max_cache_len,
device=self.device,
dtype=cache_dtype,
)
else:
self._static_cache.reset() # reset the cache for a new generation
return self._static_cache
@torch.no_grad()
def generate(
self,
......@@ -1514,19 +1542,19 @@ class GenerationMixin:
input_ids_length=input_ids_length,
)
if generation_config.cache_implementation in NEED_SETUP_CACHE_CLASSES_MAPPING:
if generation_config.cache_implementation == "static":
if model_kwargs.get("past_key_values", False) is not False:
if generation_config.cache_implementation is not None and model_kwargs.get("past_key_values") is not None:
raise ValueError(
"Using `past_key_values` argument with `generate()` when using a static KV cache is not supported. Please open an issue in Transformers GitHub repository."
"Passing both `cache_implementation` (used to initialize certain caches) and `past_key_values` (a "
"Cache object) is unsupported. Please use only one of the two."
)
cache_cls = NEED_SETUP_CACHE_CLASSES_MAPPING["static"]
if not callable(getattr(self, "_setup_cache", None)):
elif generation_config.cache_implementation in NEED_SETUP_CACHE_CLASSES_MAPPING:
if not self._supports_cache_class:
raise ValueError(
"The `generation_config` defines a `cache_implementation` that is not compatible with this model."
" Make sure it has a `_setup_cache` function."
"This model does not support the `cache_implementation` argument. Please check the following "
"issue: https://github.com/huggingface/transformers/issues/28981."
)
self._setup_cache(cache_cls, max_batch_size=batch_size, max_cache_len=generation_config.max_length)
if generation_config.cache_implementation == "static":
model_kwargs["past_key_values"] = self._get_static_cache(batch_size, generation_config.max_length)
self._validate_generated_length(generation_config, input_ids_length, has_default_max_length)
......@@ -1844,14 +1872,6 @@ class GenerationMixin:
**model_kwargs,
)
if generation_config.cache_implementation in NEED_SETUP_CACHE_CLASSES_MAPPING:
if not callable(getattr(self, "_reset_cache", None)):
raise ValueError(
"A `static_cache` was used to generate but there was a failure when trying to release the cache. "
" Make sure this model implements a `_reset_cache` function."
)
self._reset_cache()
return result
def _has_unfinished_sequences(self, this_peer_finished: bool, synced_gpus: bool, device: torch.device) -> bool:
......
src/transformers/models/cohere/modeling_cohere.py
View file @ 75bbfd5b
......@@ -340,6 +340,11 @@ class CohereFlashAttention2(CohereAttention):
cache_position: Optional[torch.LongTensor] = None,
**kwargs,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
if isinstance(past_key_value, StaticCache):
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
output_attentions = False
bsz, q_len, _ = hidden_states.size()
......@@ -734,27 +739,6 @@ class CoherePreTrainedModel(PreTrainedModel):
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
def _setup_cache(self, cache_cls, max_batch_size, max_cache_len: Optional[int] = None):
if self.config._attn_implementation == "flash_attention_2" and cache_cls == StaticCache:
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
for layer in self.model.layers:
device = layer.input_layernorm.weight.device
if hasattr(self.config, "_pre_quantization_dtype"):
dtype = self.config._pre_quantization_dtype
else:
dtype = layer.self_attn.o_proj.weight.dtype
layer.self_attn.past_key_value = cache_cls(
self.config, max_batch_size, max_cache_len, device=device, dtype=dtype
)
def _reset_cache(self):
for layer in self.model.layers:
layer.self_attn.past_key_value = None
COHERE_INPUTS_DOCSTRING = r"""
Args:
......@@ -898,14 +882,11 @@ class CohereModel(CoherePreTrainedModel):
inputs_embeds = self.embed_tokens(input_ids)
past_seen_tokens = 0
if use_cache: # kept for BC (cache positions)
if not isinstance(past_key_values, StaticCache):
if use_cache and not isinstance(past_key_values, Cache): # kept for BC (non `Cache` `past_key_values` inputs)
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
past_seen_tokens = past_key_values.get_seq_length()
if cache_position is None:
if isinstance(past_key_values, StaticCache):
raise ValueError("cache_position is a required argument when using StaticCache.")
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
......@@ -913,7 +894,7 @@ class CohereModel(CoherePreTrainedModel):
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_seen_tokens)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_key_values)
# embed positions
hidden_states = inputs_embeds
......@@ -982,7 +963,7 @@ class CohereModel(CoherePreTrainedModel):
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_seen_tokens: int,
past_key_values: Cache,
):
# TODO: As of torch==2.2.0, the `attention_mask` passed to the model in `generate` is 2D and of dynamic length even when the static
# KV cache is used. This is an issue for torch.compile which then recaptures cudagraphs at each decode steps due to the dynamic shapes.
......@@ -994,9 +975,12 @@ class CohereModel(CoherePreTrainedModel):
return attention_mask
return None
if self.config._attn_implementation == "sdpa":
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument,
# in order to dispatch on Flash Attention 2.
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
if self.config._attn_implementation == "sdpa" and not using_static_cache:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask,
inputs_embeds=input_tensor,
......@@ -1008,9 +992,9 @@ class CohereModel(CoherePreTrainedModel):
dtype, device = input_tensor.dtype, input_tensor.device
min_dtype = torch.finfo(dtype).min
sequence_length = input_tensor.shape[1]
if hasattr(getattr(self.layers[0], "self_attn", {}), "past_key_value"): # static cache
target_length = self.config.max_position_embeddings
else: # dynamic cache
if using_static_cache:
target_length = past_key_values.get_max_length()
else:
target_length = (
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
......@@ -1032,6 +1016,10 @@ class CohereModel(CoherePreTrainedModel):
# backwards compatibility: we allow passing a 4D attention mask shorter than the input length with
# cache. In that case, the 4D attention mask attends to the newest tokens only.
if attention_mask.shape[-2] < cache_position[0] + sequence_length:
logger.warning_once(
"Passing a 4d mask shorter than the input length is deprecated and will be removed in "
"transformers v4.42.0"
)
offset = cache_position[0]
else:
offset = 0
......@@ -1189,13 +1177,6 @@ class CohereForCausalLM(CoherePreTrainedModel):
use_cache=True,
**kwargs,
):
# With static cache, the `past_key_values` is None
# TODO joao: standardize interface for the different Cache classes and remove of this if
has_static_cache = False
if past_key_values is None:
past_key_values = getattr(getattr(self.model.layers[0], "self_attn", {}), "past_key_value", None)
has_static_cache = past_key_values is not None
past_length = 0
if past_key_values is not None:
if isinstance(past_key_values, Cache):
......@@ -1213,8 +1194,7 @@ class CohereForCausalLM(CoherePreTrainedModel):
# Keep only the unprocessed tokens:
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
# input)
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as input)
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
......@@ -1254,9 +1234,6 @@ class CohereForCausalLM(CoherePreTrainedModel):
elif use_cache:
cache_position = cache_position[-input_length:]
if has_static_cache:
past_key_values = None
model_inputs.update(
{
"position_ids": position_ids,
......
src/transformers/models/dbrx/modeling_dbrx.py
View file @ 75bbfd5b
......@@ -15,7 +15,7 @@
""" PyTorch DBRX model. """
import math
from typing import Any, Dict, Optional, Tuple, Union
from typing import Any, Optional, Tuple, Union
import torch
import torch.nn.functional as F
......@@ -354,6 +354,11 @@ class DbrxFlashAttention2(DbrxAttention):
cache_position: Optional[torch.LongTensor] = None,
**kwargs: Any,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
if isinstance(past_key_value, StaticCache):
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
logger.info("Implicitly setting `output_attentions` to False as it is not supported in Flash Attention.")
output_attentions = False
......@@ -622,6 +627,7 @@ class DbrxSdpaAttention(DbrxAttention):
value_states,
attn_mask=causal_mask,
dropout_p=self.attn_pdrop if self.training else 0.0,
is_causal=causal_mask is None and q_len > 1,
)
attn_output = attn_output.transpose(1, 2).contiguous()
......@@ -957,28 +963,6 @@ class DbrxPreTrainedModel(PreTrainedModel):
module.v1.data.normal_(mean=0.0, std=std)
module.w2.data.normal_(mean=0.0, std=std)
def _setup_cache(self, cache_cls: Any, max_batch_size: int, max_cache_len: int):
if self.config._attn_implementation == "flash_attention_2" and cache_cls == StaticCache:
raise ValueError(
"`static` cache implementation is not compatible with "
+ "`attn_implementation==flash_attention_2`. Make sure to use "
+ "`spda` in the mean time and open an issue at https://github.com/huggingface/transformers."
)
for block in self.transformer.blocks:
device = block.norm_attn_norm.norm_1.weight.device
if hasattr(self.config, "_pre_quantization_dtype"):
dtype = self.config._pre_quantization_dtype
else:
dtype = block.norm_attn_norm.attn.out_proj.weight.dtype
block.norm_attn_norm.attn.past_key_value = cache_cls(
self.config, max_batch_size, max_cache_len, device=device, dtype=dtype
)
def _reset_cache(self):
for block in self.transformer.blocks:
block.norm_attn_norm.attn.past_key_value = None
DBRX_INPUTS_DOCSTRING = r"""
Args:
......@@ -1131,22 +1115,18 @@ class DbrxModel(DbrxPreTrainedModel):
inputs_embeds = nn.functional.dropout(inputs_embeds, p=self.emb_pdrop, training=self.training)
past_seen_tokens = 0
if use_cache: # kept for BC (cache positions)
if not isinstance(past_key_values, StaticCache):
if use_cache and not isinstance(past_key_values, Cache): # kept for BC (non `Cache` `past_key_values` inputs)
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
past_seen_tokens = past_key_values.get_seq_length()
if cache_position is None:
if isinstance(past_key_values, StaticCache):
raise ValueError("cache_position is a required argument when using StaticCache.")
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_key_values)
# embed positions
hidden_states = inputs_embeds
......@@ -1205,7 +1185,9 @@ class DbrxModel(DbrxPreTrainedModel):
next_cache = None
if use_cache:
next_cache = (
next_decoder_cache.to_legacy_cache() if isinstance(next_decoder_cache, Cache) else next_decoder_cache
next_decoder_cache.to_legacy_cache()
if isinstance(next_decoder_cache, DynamicCache)
else next_decoder_cache
)
if not return_dict:
return tuple(
......@@ -1221,28 +1203,45 @@ class DbrxModel(DbrxPreTrainedModel):
router_logits=all_router_logits,
)
# Copied from transformers.models.llama.modeling_llama.LlamaModel._update_causal_mask
def _update_causal_mask(
self,
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_key_values: Cache,
):
# TODO: As of torch==2.2.0, the `attention_mask` passed to the model in `generate` is 2D and of dynamic length even when the static
# KV cache is used. This is an issue for torch.compile which then recaptures cudagraphs at each decode steps due to the dynamic shapes.
# (`recording cudagraph tree for symint key 13`, etc.), which is VERY slow. A workaround is `@torch.compiler.disable`, but this prevents using
# `fullgraph=True`. See more context in https://github.com/huggingface/transformers/pull/29114
def _update_causal_mask(
self, attention_mask: Optional[torch.Tensor], input_tensor: torch.Tensor, cache_position: torch.Tensor
) -> Optional[torch.Tensor]:
if self.config._attn_implementation == "flash_attention_2":
if attention_mask is not None and 0.0 in attention_mask:
return attention_mask
return None
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
if self.config._attn_implementation == "sdpa" and not using_static_cache:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask, inputs_embeds=input_tensor, past_key_values_length=past_seen_tokens
):
return None
dtype, device = input_tensor.dtype, input_tensor.device
min_dtype = torch.finfo(dtype).min
sequence_length = input_tensor.shape[1]
if hasattr(self.blocks[0].norm_attn_norm.attn, "past_key_value"): # static cache
target_length = self.config.max_position_embeddings
else: # dynamic cache
if using_static_cache:
target_length = past_key_values.get_max_length()
else:
target_length = (
attention_mask.shape[-1] if isinstance(attention_mask, torch.Tensor) else cache_position[-1] + 1
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
else past_seen_tokens + sequence_length + 1
)
target_length = int(target_length)
causal_mask = torch.full((sequence_length, target_length), fill_value=min_dtype, dtype=dtype, device=device)
if sequence_length != 1:
......@@ -1259,6 +1258,10 @@ class DbrxModel(DbrxPreTrainedModel):
# backwards compatibility: we allow passing a 4D attention mask shorter than the input length with
# cache. In that case, the 4D attention mask attends to the newest tokens only.
if attention_mask.shape[-2] < cache_position[0] + sequence_length:
logger.warning_once(
"Passing a 4d mask shorter than the input length is deprecated and will be removed in "
"transformers v4.42.0"
)
offset = cache_position[0]
else:
offset = 0
......@@ -1273,13 +1276,6 @@ class DbrxModel(DbrxPreTrainedModel):
and attention_mask is not None
and attention_mask.device.type == "cuda"
):
# TODO: For dynamo, rather use a check on fullgraph=True once this is possible (https://github.com/pytorch/pytorch/pull/120400).
is_tracing = (
torch.jit.is_tracing()
or isinstance(input_tensor, torch.fx.Proxy)
or (hasattr(torch, "_dynamo") and torch._dynamo.is_compiling())
)
if not is_tracing and torch.any(attention_mask != 1):
# Attend to all tokens in fully masked rows in the causal_mask, for example the relevant first rows when
# using left padding. This is required by F.scaled_dot_product_attention memory-efficient attention path.
# Details: https://github.com/pytorch/pytorch/issues/110213
......@@ -1431,28 +1427,35 @@ class DbrxForCausalLM(DbrxPreTrainedModel):
router_logits=outputs.router_logits,
)
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.prepare_inputs_for_generation
def prepare_inputs_for_generation(
self,
input_ids: torch.Tensor,
past_key_values: Optional[Cache] = None,
attention_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
**kwargs: Any,
) -> Dict[str, Any]:
input_ids,
past_key_values=None,
attention_mask=None,
inputs_embeds=None,
cache_position=None,
use_cache=True,
**kwargs,
):
past_length = 0
if past_key_values is not None:
if isinstance(past_key_values, Cache):
cache_length = past_key_values.get_seq_length()
past_length = past_key_values.seen_tokens
max_cache_length = past_key_values.get_max_length()
past_length = cache_position[0] if cache_position is not None else past_key_values.get_seq_length()
max_cache_length = (
torch.tensor(past_key_values.get_max_length(), device=input_ids.device)
if past_key_values.get_max_length() is not None
else None
)
cache_length = past_length if max_cache_length is None else torch.min(max_cache_length, past_length)
# TODO joao: remove this `else` after `generate` prioritizes `Cache` objects
else:
cache_length = past_length = past_key_values[0][0].shape[2]
max_cache_length = None
# Keep only the unprocessed tokens:
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
# input)
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as input)
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
......@@ -1477,22 +1480,6 @@ class DbrxForCausalLM(DbrxPreTrainedModel):
if past_key_values:
position_ids = position_ids[:, -input_ids.shape[1] :]
if self.generation_config.cache_implementation == "static":
# generation with static cache
cache_position = kwargs.get("cache_position", None)
if cache_position is None:
past_length = 0
else:
past_length = cache_position[-1] + 1
input_ids = input_ids[:, past_length:]
position_ids = position_ids[:, past_length:] if position_ids is not None else None
# TODO @gante we should only keep a `cache_position` in generate, and do +=1.
# same goes for position ids. Could also help with continued generation.
input_length = position_ids.shape[-1] if position_ids is not None else input_ids.shape[-1]
cache_position = torch.arange(past_length, past_length + input_length, device=input_ids.device)
position_ids = position_ids.contiguous() if position_ids is not None else None
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
......@@ -1502,12 +1489,18 @@ class DbrxForCausalLM(DbrxPreTrainedModel):
# TODO: use `next_tokens` directly instead.
model_inputs = {"input_ids": input_ids.contiguous()}
input_length = position_ids.shape[-1] if position_ids is not None else input_ids.shape[-1]
if cache_position is None:
cache_position = torch.arange(past_length, past_length + input_length, device=input_ids.device)
elif use_cache:
cache_position = cache_position[-input_length:]
model_inputs.update(
{
"position_ids": position_ids,
"cache_position": cache_position,
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
"use_cache": use_cache,
"attention_mask": attention_mask,
}
)
......
src/transformers/models/gemma/modeling_gemma.py
View file @ 75bbfd5b
......@@ -332,6 +332,11 @@ class GemmaFlashAttention2(GemmaAttention):
cache_position: Optional[torch.LongTensor] = None,
**kwargs,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
if isinstance(past_key_value, StaticCache):
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
output_attentions = False
bsz, q_len, _ = hidden_states.size()
......@@ -615,7 +620,7 @@ class GemmaDecoderLayer(nn.Module):
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
past_key_value: Optional[Cache] = None,
output_attentions: Optional[bool] = False,
use_cache: Optional[bool] = False,
cache_position: Optional[torch.LongTensor] = None,
......@@ -717,23 +722,6 @@ class GemmaPreTrainedModel(PreTrainedModel):
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
def _setup_cache(self, cache_cls, max_batch_size, max_cache_len: Optional[int] = None):
if self.config._attn_implementation == "flash_attention_2" and cache_cls == StaticCache:
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
for layer in self.model.layers:
weights = layer.self_attn.o_proj.weight
layer.self_attn.past_key_value = cache_cls(
self.config, max_batch_size, max_cache_len, device=weights.device, dtype=weights.dtype
)
def _reset_cache(self):
for layer in self.model.layers:
layer.self_attn.past_key_value = None
GEMMA_INPUTS_DOCSTRING = r"""
Args:
......@@ -850,7 +838,7 @@ class GemmaModel(GemmaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
......@@ -879,13 +867,11 @@ class GemmaModel(GemmaPreTrainedModel):
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
past_seen_tokens = 0
if use_cache: # kept for BC (cache positions)
if not isinstance(past_key_values, StaticCache):
if use_cache and not isinstance(past_key_values, Cache): # kept for BC (non `Cache` `past_key_values` inputs)
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
past_seen_tokens = past_key_values.get_seq_length()
if cache_position is None:
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
......@@ -893,7 +879,7 @@ class GemmaModel(GemmaPreTrainedModel):
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_seen_tokens)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_key_values)
# embed positions
hidden_states = inputs_embeds
......@@ -952,7 +938,9 @@ class GemmaModel(GemmaPreTrainedModel):
next_cache = None
if use_cache:
next_cache = (
next_decoder_cache.to_legacy_cache() if isinstance(next_decoder_cache, Cache) else next_decoder_cache
next_decoder_cache.to_legacy_cache()
if isinstance(next_decoder_cache, DynamicCache)
else next_decoder_cache
)
if not return_dict:
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
......@@ -968,7 +956,7 @@ class GemmaModel(GemmaPreTrainedModel):
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_seen_tokens: int,
past_key_values: Cache,
):
# TODO: As of torch==2.2.0, the `attention_mask` passed to the model in `generate` is 2D and of dynamic length even when the static
# KV cache is used. This is an issue for torch.compile which then recaptures cudagraphs at each decode steps due to the dynamic shapes.
......@@ -980,9 +968,12 @@ class GemmaModel(GemmaPreTrainedModel):
return attention_mask
return None
if self.config._attn_implementation == "sdpa":
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument,
# in order to dispatch on Flash Attention 2.
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
if self.config._attn_implementation == "sdpa" and not using_static_cache:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask,
inputs_embeds=input_tensor,
......@@ -994,9 +985,9 @@ class GemmaModel(GemmaPreTrainedModel):
dtype, device = input_tensor.dtype, input_tensor.device
min_dtype = torch.finfo(dtype).min
sequence_length = input_tensor.shape[1]
if hasattr(getattr(self.layers[0], "self_attn", {}), "past_key_value"): # static cache
target_length = self.config.max_position_embeddings
else: # dynamic cache
if using_static_cache:
target_length = past_key_values.get_max_length()
else:
target_length = (
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
......@@ -1018,6 +1009,10 @@ class GemmaModel(GemmaPreTrainedModel):
# backwards compatibility: we allow passing a 4D attention mask shorter than the input length with
# cache. In that case, the 4D attention mask attends to the newest tokens only.
if attention_mask.shape[-2] < cache_position[0] + sequence_length:
logger.warning_once(
"Passing a 4d mask shorter than the input length is deprecated and will be removed in "
"transformers v4.42.0"
)
offset = cache_position[0]
else:
offset = 0
......@@ -1079,7 +1074,7 @@ class GemmaForCausalLM(GemmaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......@@ -1171,13 +1166,6 @@ class GemmaForCausalLM(GemmaPreTrainedModel):
use_cache=True,
**kwargs,
):
# With static cache, the `past_key_values` is None
# TODO joao: standardize interface for the different Cache classes and remove of this if
has_static_cache = False
if past_key_values is None:
past_key_values = getattr(getattr(self.model.layers[0], "self_attn", {}), "past_key_value", None)
has_static_cache = past_key_values is not None
past_length = 0
if past_key_values is not None:
if isinstance(past_key_values, Cache):
......@@ -1195,8 +1183,7 @@ class GemmaForCausalLM(GemmaPreTrainedModel):
# Keep only the unprocessed tokens:
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
# input)
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as input)
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
......@@ -1236,9 +1223,6 @@ class GemmaForCausalLM(GemmaPreTrainedModel):
elif use_cache:
cache_position = cache_position[-input_length:]
if has_static_cache:
past_key_values = None
model_inputs.update(
{
"position_ids": position_ids,
......@@ -1298,7 +1282,7 @@ class GemmaForSequenceClassification(GemmaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/jamba/modeling_jamba.py
View file @ 75bbfd5b
......@@ -29,7 +29,7 @@ from torch import nn
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
from ...activations import ACT2FN
from ...cache_utils import DynamicCache # we need __iter__ and __len__ of pkv
from ...cache_utils import Cache, DynamicCache # we need __iter__ and __len__ of pkv
from ...modeling_attn_mask_utils import (
AttentionMaskConverter,
)
......@@ -1807,7 +1807,7 @@ class JambaForSequenceClassification(JambaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/llama/modeling_llama.py
View file @ 75bbfd5b
......@@ -428,6 +428,12 @@ class LlamaFlashAttention2(LlamaAttention):
cache_position: Optional[torch.LongTensor] = None,
**kwargs,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
if isinstance(past_key_value, StaticCache):
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
output_attentions = False
bsz, q_len, _ = hidden_states.size()
......@@ -710,7 +716,7 @@ class LlamaDecoderLayer(nn.Module):
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
past_key_value: Optional[Cache] = None,
output_attentions: Optional[bool] = False,
use_cache: Optional[bool] = False,
cache_position: Optional[torch.LongTensor] = None,
......@@ -811,27 +817,6 @@ class LlamaPreTrainedModel(PreTrainedModel):
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
def _setup_cache(self, cache_cls, max_batch_size, max_cache_len: Optional[int] = None):
if self.config._attn_implementation == "flash_attention_2" and cache_cls == StaticCache:
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
for layer in self.model.layers:
device = layer.input_layernorm.weight.device
if hasattr(self.config, "_pre_quantization_dtype"):
dtype = self.config._pre_quantization_dtype
else:
dtype = layer.self_attn.o_proj.weight.dtype
layer.self_attn.past_key_value = cache_cls(
self.config, max_batch_size, max_cache_len, device=device, dtype=dtype
)
def _reset_cache(self):
for layer in self.model.layers:
layer.self_attn.past_key_value = None
LLAMA_INPUTS_DOCSTRING = r"""
Args:
......@@ -946,7 +931,7 @@ class LlamaModel(LlamaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
......@@ -975,23 +960,18 @@ class LlamaModel(LlamaPreTrainedModel):
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
past_seen_tokens = 0
if use_cache: # kept for BC (cache positions)
if not isinstance(past_key_values, StaticCache):
if use_cache and not isinstance(past_key_values, Cache): # kept for BC (non `Cache` `past_key_values` inputs)
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
past_seen_tokens = past_key_values.get_seq_length()
if cache_position is None:
if isinstance(past_key_values, StaticCache):
raise ValueError("cache_position is a required argument when using StaticCache.")
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_seen_tokens)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_key_values)
# embed positions
hidden_states = inputs_embeds
......@@ -1044,7 +1024,9 @@ class LlamaModel(LlamaPreTrainedModel):
next_cache = None
if use_cache:
next_cache = (
next_decoder_cache.to_legacy_cache() if isinstance(next_decoder_cache, Cache) else next_decoder_cache
next_decoder_cache.to_legacy_cache()
if isinstance(next_decoder_cache, DynamicCache)
else next_decoder_cache
)
if not return_dict:
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
......@@ -1060,7 +1042,7 @@ class LlamaModel(LlamaPreTrainedModel):
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_seen_tokens: int,
past_key_values: Cache,
):
# TODO: As of torch==2.2.0, the `attention_mask` passed to the model in `generate` is 2D and of dynamic length even when the static
# KV cache is used. This is an issue for torch.compile which then recaptures cudagraphs at each decode steps due to the dynamic shapes.
......@@ -1072,9 +1054,12 @@ class LlamaModel(LlamaPreTrainedModel):
return attention_mask
return None
if self.config._attn_implementation == "sdpa":
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument,
# in order to dispatch on Flash Attention 2.
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
if self.config._attn_implementation == "sdpa" and not using_static_cache:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask,
inputs_embeds=input_tensor,
......@@ -1086,9 +1071,9 @@ class LlamaModel(LlamaPreTrainedModel):
dtype, device = input_tensor.dtype, input_tensor.device
min_dtype = torch.finfo(dtype).min
sequence_length = input_tensor.shape[1]
if hasattr(getattr(self.layers[0], "self_attn", {}), "past_key_value"): # static cache
target_length = self.config.max_position_embeddings
else: # dynamic cache
if using_static_cache:
target_length = past_key_values.get_max_length()
else:
target_length = (
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
......@@ -1110,6 +1095,10 @@ class LlamaModel(LlamaPreTrainedModel):
# backwards compatibility: we allow passing a 4D attention mask shorter than the input length with
# cache. In that case, the 4D attention mask attends to the newest tokens only.
if attention_mask.shape[-2] < cache_position[0] + sequence_length:
logger.warning_once(
"Passing a 4d mask shorter than the input length is deprecated and will be removed in "
"transformers v4.42.0"
)
offset = cache_position[0]
else:
offset = 0
......@@ -1169,7 +1158,7 @@ class LlamaForCausalLM(LlamaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......@@ -1267,13 +1256,6 @@ class LlamaForCausalLM(LlamaPreTrainedModel):
use_cache=True,
**kwargs,
):
# With static cache, the `past_key_values` is None
# TODO joao: standardize interface for the different Cache classes and remove of this if
has_static_cache = False
if past_key_values is None:
past_key_values = getattr(getattr(self.model.layers[0], "self_attn", {}), "past_key_value", None)
has_static_cache = past_key_values is not None
past_length = 0
if past_key_values is not None:
if isinstance(past_key_values, Cache):
......@@ -1291,8 +1273,7 @@ class LlamaForCausalLM(LlamaPreTrainedModel):
# Keep only the unprocessed tokens:
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
# input)
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as input)
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
......@@ -1332,9 +1313,6 @@ class LlamaForCausalLM(LlamaPreTrainedModel):
elif use_cache:
cache_position = cache_position[-input_length:]
if has_static_cache:
past_key_values = None
model_inputs.update(
{
"position_ids": position_ids,
......@@ -1393,7 +1371,7 @@ class LlamaForSequenceClassification(LlamaPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......@@ -1510,7 +1488,7 @@ class LlamaForQuestionAnswering(LlamaPreTrainedModel):
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
start_positions: Optional[torch.LongTensor] = None,
end_positions: Optional[torch.LongTensor] = None,
......
src/transformers/models/mistral/modeling_mistral.py
View file @ 75bbfd5b
......@@ -1301,7 +1301,7 @@ class MistralForSequenceClassification(MistralPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/mixtral/modeling_mixtral.py
View file @ 75bbfd5b
......@@ -1525,7 +1525,7 @@ class MixtralForSequenceClassification(MixtralPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/olmo/modeling_olmo.py
View file @ 75bbfd5b
......@@ -692,7 +692,7 @@ class OlmoDecoderLayer(nn.Module):
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
past_key_value: Optional[Cache] = None,
output_attentions: Optional[bool] = False,
use_cache: Optional[bool] = False,
cache_position: Optional[torch.LongTensor] = None,
......@@ -794,27 +794,6 @@ class OlmoPreTrainedModel(PreTrainedModel):
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
def _setup_cache(self, cache_cls, max_batch_size, max_cache_len: Optional[int] = None):
if self.config._attn_implementation == "flash_attention_2" and cache_cls == StaticCache:
raise ValueError(
"`static` cache implementation is not compatible with `attn_implementation==flash_attention_2` "
"make sure to use `sdpa` in the mean time, and open an issue at https://github.com/huggingface/transformers"
)
for layer in self.model.layers:
device = layer.input_layernorm.weight.device
if hasattr(self.config, "_pre_quantization_dtype"):
dtype = self.config._pre_quantization_dtype
else:
dtype = layer.self_attn.o_proj.weight.dtype
layer.self_attn.past_key_value = cache_cls(
self.config, max_batch_size, max_cache_len, device=device, dtype=dtype
)
def _reset_cache(self):
for layer in self.model.layers:
layer.self_attn.past_key_value = None
OLMO_INPUTS_DOCSTRING = r"""
Args:
......@@ -930,7 +909,7 @@ class OlmoModel(OlmoPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
......@@ -959,23 +938,18 @@ class OlmoModel(OlmoPreTrainedModel):
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
past_seen_tokens = 0
if use_cache: # kept for BC (cache positions)
if not isinstance(past_key_values, StaticCache):
if use_cache and not isinstance(past_key_values, Cache): # kept for BC (non `Cache` `past_key_values` inputs)
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
past_seen_tokens = past_key_values.get_seq_length()
if cache_position is None:
if isinstance(past_key_values, StaticCache):
raise ValueError("cache_position is a required argument when using StaticCache.")
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
cache_position = torch.arange(
past_seen_tokens, past_seen_tokens + inputs_embeds.shape[1], device=inputs_embeds.device
)
if position_ids is None:
position_ids = cache_position.unsqueeze(0)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_seen_tokens)
causal_mask = self._update_causal_mask(attention_mask, inputs_embeds, cache_position, past_key_values)
# embed positions
hidden_states = inputs_embeds
......@@ -1028,7 +1002,9 @@ class OlmoModel(OlmoPreTrainedModel):
next_cache = None
if use_cache:
next_cache = (
next_decoder_cache.to_legacy_cache() if isinstance(next_decoder_cache, Cache) else next_decoder_cache
next_decoder_cache.to_legacy_cache()
if isinstance(next_decoder_cache, DynamicCache)
else next_decoder_cache
)
if not return_dict:
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
......@@ -1045,7 +1021,7 @@ class OlmoModel(OlmoPreTrainedModel):
attention_mask: torch.Tensor,
input_tensor: torch.Tensor,
cache_position: torch.Tensor,
past_seen_tokens: int,
past_key_values: Cache,
):
# TODO: As of torch==2.2.0, the `attention_mask` passed to the model in `generate` is 2D and of dynamic length even when the static
# KV cache is used. This is an issue for torch.compile which then recaptures cudagraphs at each decode steps due to the dynamic shapes.
......@@ -1057,9 +1033,12 @@ class OlmoModel(OlmoPreTrainedModel):
return attention_mask
return None
if self.config._attn_implementation == "sdpa":
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument,
# in order to dispatch on Flash Attention 2.
# For SDPA, when possible, we will rely on its `is_causal` argument instead of its `attn_mask` argument, in
# order to dispatch on Flash Attention 2. This feature is not compatible with static cache, as SDPA will fail
# to infer the attention mask.
past_seen_tokens = past_key_values.get_seq_length() if past_key_values is not None else 0
using_static_cache = isinstance(past_key_values, StaticCache)
if self.config._attn_implementation == "sdpa" and not using_static_cache:
if AttentionMaskConverter._ignore_causal_mask_sdpa(
attention_mask,
inputs_embeds=input_tensor,
......@@ -1071,9 +1050,9 @@ class OlmoModel(OlmoPreTrainedModel):
dtype, device = input_tensor.dtype, input_tensor.device
min_dtype = torch.finfo(dtype).min
sequence_length = input_tensor.shape[1]
if hasattr(getattr(self.layers[0], "self_attn", {}), "past_key_value"): # static cache
target_length = self.config.max_position_embeddings
else: # dynamic cache
if using_static_cache:
target_length = past_key_values.get_max_length()
else:
target_length = (
attention_mask.shape[-1]
if isinstance(attention_mask, torch.Tensor)
......@@ -1095,6 +1074,10 @@ class OlmoModel(OlmoPreTrainedModel):
# backwards compatibility: we allow passing a 4D attention mask shorter than the input length with
# cache. In that case, the 4D attention mask attends to the newest tokens only.
if attention_mask.shape[-2] < cache_position[0] + sequence_length:
logger.warning_once(
"Passing a 4d mask shorter than the input length is deprecated and will be removed in "
"transformers v4.42.0"
)
offset = cache_position[0]
else:
offset = 0
......@@ -1250,13 +1233,6 @@ class OlmoForCausalLM(OlmoPreTrainedModel):
use_cache=True,
**kwargs,
):
# With static cache, the `past_key_values` is None
# TODO joao: standardize interface for the different Cache classes and remove of this if
has_static_cache = False
if past_key_values is None:
past_key_values = getattr(getattr(self.model.layers[0], "self_attn", {}), "past_key_value", None)
has_static_cache = past_key_values is not None
past_length = 0
if past_key_values is not None:
if isinstance(past_key_values, Cache):
......@@ -1274,8 +1250,7 @@ class OlmoForCausalLM(OlmoPreTrainedModel):
# Keep only the unprocessed tokens:
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
# input)
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as input)
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
......@@ -1315,9 +1290,6 @@ class OlmoForCausalLM(OlmoPreTrainedModel):
elif use_cache:
cache_position = cache_position[-input_length:]
if has_static_cache:
past_key_values = None
model_inputs.update(
{
"position_ids": position_ids,
......
src/transformers/models/persimmon/modeling_persimmon.py
View file @ 75bbfd5b
......@@ -927,7 +927,7 @@ class PersimmonForSequenceClassification(PersimmonPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/phi/modeling_phi.py
View file @ 75bbfd5b
......@@ -1313,7 +1313,7 @@ class PhiForSequenceClassification(PhiPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/phi3/modeling_phi3.py
View file @ 75bbfd5b
......@@ -1419,7 +1419,7 @@ class Phi3ForSequenceClassification(Phi3PreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/qwen2_moe/modeling_qwen2_moe.py
View file @ 75bbfd5b
......@@ -1509,7 +1509,7 @@ class Qwen2MoeForSequenceClassification(Qwen2MoePreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/stablelm/modeling_stablelm.py
View file @ 75bbfd5b
......@@ -1299,7 +1299,7 @@ class StableLmForSequenceClassification(StableLmPreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
src/transformers/models/starcoder2/modeling_starcoder2.py
View file @ 75bbfd5b
......@@ -1292,7 +1292,7 @@ class Starcoder2ForSequenceClassification(Starcoder2PreTrainedModel):
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
past_key_values: Optional[Union[Cache, List[torch.FloatTensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
......
tests/models/llama/test_modeling_llama.py
View file @ 75bbfd5b
......@@ -18,11 +18,11 @@ import tempfile
import unittest
import pytest
from packaging import version
from parameterized import parameterized
from transformers import LlamaConfig, StaticCache, is_torch_available, logging, set_seed
from transformers import LlamaConfig, is_torch_available, set_seed
from transformers.testing_utils import (
CaptureLogger,
require_bitsandbytes,
require_flash_attn,
require_read_token,
......@@ -684,15 +684,28 @@ class LlamaIntegrationTest(unittest.TestCase):
@require_torch_gpu
@require_read_token
def test_compile_static_cache(self):
# `torch==2.2` will throw an error on this test (as in other compilation tests), but torch==2.1.2 and torch>2.2
# work as intended. See https://github.com/pytorch/pytorch/issues/121943
if version.parse(torch.__version__) < version.parse("2.3.0"):
self.skipTest("This test requires torch >= 2.3 to run.")
NUM_TOKENS_TO_GENERATE = 40
# Note on `EXPECTED_TEXT_COMPLETION`'s diff: the current value matches the original test if the original test
# was changed to have a cache of 53 tokens (as opposed to 4096), on Ampere GPUs.
EXPECTED_TEXT_COMPLETION = {
7: [
"Simply put, the theory of relativity states that 1) the speed of light is constant, 2) the speed of light is the same for all observers, and 3) the laws of physics are the same for all observers.",
"My favorite all time favorite condiment is ketchup. I love it on everything. I love it on my eggs, my fries, my chicken, my burgers, my hot dogs, my sandwiches, my salads, my p",
],
8: [
"Simply put, the theory of relativity states that 1) the speed of light is the same for all observers, and 2) the laws of physics are the same for all observers.\nThe first part of the theory of relativity",
"My favorite all time favorite condiment is ketchup. I love it on everything. I love it on my eggs, my fries, my chicken, my burgers, my hot dogs, my sandwiches, my salads, my p",
"Simply put, the theory of relativity states that 1) the speed of light is constant in all inertial "
"reference frames, and 2) the laws of physics are the same for all inertial reference frames.\nThe "
"theory of relativ",
"My favorite all time favorite condiment is ketchup. I love it on everything. I love it on my eggs, "
"my fries, my chicken, my burgers, my hot dogs, my sandwiches, my salads, my p",
],
7: [
"Simply put, the theory of relativity states that 1. surely nothing is faster than light.\nThe theory "
"goes that nothing travels faster than light, but the faster you go, the slower everything else will "
"be.\nThe theory of relativity",
"My favorite all time favorite condiment is ketchup. I love it on hamburgers, hot dogs, fries, eggs, "
"and even on a good old fashioned cheeseburger. I love it on everything. I love it so",
],
}
......@@ -706,38 +719,25 @@ class LlamaIntegrationTest(unittest.TestCase):
)
inputs = tokenizer(prompts, return_tensors="pt", padding=True).to(model.device)
def decode_one_tokens(model, cur_token, input_pos, cache_position):
logits = model(
cur_token, position_ids=input_pos, cache_position=cache_position, return_dict=False, use_cache=True
)[0]
new_token = torch.argmax(logits[:, -1], dim=-1)[:, None]
return new_token
batch_size, seq_length = inputs["input_ids"].shape
with torch.no_grad():
model._setup_cache(StaticCache, 2, max_cache_len=4096)
cache_position = torch.arange(seq_length, device=torch_device)
generated_ids = torch.zeros(
batch_size, seq_length + NUM_TOKENS_TO_GENERATE + 1, dtype=torch.int, device=torch_device
# Dynamic Cache
generated_ids = model.generate(**inputs, max_new_tokens=NUM_TOKENS_TO_GENERATE, do_sample=False)
dynamic_text = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
self.assertEqual(EXPECTED_TEXT_COMPLETION[8], dynamic_text) # Both GPU architectures have the same output
# Static Cache
generated_ids = model.generate(
**inputs, max_new_tokens=NUM_TOKENS_TO_GENERATE, do_sample=False, cache_implementation="static"
)
static_text = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
self.assertEqual(EXPECTED_TEXT_COMPLETION[self.cuda_compute_capability_major_version], static_text)
# Static Cache + compile
model.forward = torch.compile(model.forward, mode="reduce-overhead", fullgraph=True)
generated_ids = model.generate(
**inputs, max_new_tokens=NUM_TOKENS_TO_GENERATE, do_sample=False, cache_implementation="static"
)
generated_ids[:, cache_position] = inputs["input_ids"].to(torch_device).to(torch.int)
logits = model(**inputs, cache_position=cache_position, return_dict=False, use_cache=True)[0]
next_token = torch.argmax(logits[:, -1], dim=-1)[:, None]
generated_ids[:, seq_length] = next_token[:, 0]
decode_one_tokens = torch.compile(decode_one_tokens, mode="reduce-overhead", fullgraph=True)
cache_position = torch.tensor([seq_length + 1], device=torch_device)
for _ in range(1, NUM_TOKENS_TO_GENERATE):
with torch.backends.cuda.sdp_kernel(enable_flash=False, enable_mem_efficient=False, enable_math=True):
with CaptureLogger(logging.get_logger(__name__)) as cl:
next_token = decode_one_tokens(model, next_token.clone(), None, cache_position)
self.assertNotIn("skipping cudagraphs due to", cl.out)
generated_ids[:, cache_position] = next_token.int()
cache_position += 1
text = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
self.assertEqual(EXPECTED_TEXT_COMPLETION[self.cuda_compute_capability_major_version], text)
static_compiled_text = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
self.assertEqual(EXPECTED_TEXT_COMPLETION[self.cuda_compute_capability_major_version], static_compiled_text)
@require_torch
......
tests/quantization/aqlm_integration/test_aqlm.py
View file @ 75bbfd5b
......@@ -196,9 +196,14 @@ class AqlmTest(unittest.TestCase):
"""
# Sample tokens greedily
def decode_one_tokens(model, cur_token, input_pos, cache_position):
def decode_one_tokens(model, cur_token, input_pos, cache_position, past_key_values):
logits = model(
cur_token, position_ids=input_pos, cache_position=cache_position, return_dict=False, use_cache=True
cur_token,
position_ids=input_pos,
cache_position=cache_position,
past_key_values=past_key_values,
return_dict=False,
use_cache=True,
)[0]
new_token = torch.argmax(logits[:, [-1]], dim=-1).to(torch.int)
......@@ -209,7 +214,13 @@ class AqlmTest(unittest.TestCase):
seq_length = input_ids.shape[1]
# Setup static KV cache for generation
self.quantized_model._setup_cache(StaticCache, 1, max_cache_len=seq_length + self.max_new_tokens + 1)
past_key_values = StaticCache(
config=self.quantized_model.config,
max_batch_size=1,
max_cache_len=seq_length + self.max_new_tokens + 1,
device=torch_device,
dtype=self.quantized_model.config._pre_quantization_dtype,
)
# Allocate token ids to be generated and copy prefix ids
cache_position = torch.arange(seq_length, device=torch_device)
......@@ -217,7 +228,13 @@ class AqlmTest(unittest.TestCase):
generated_ids[:, cache_position] = input_ids.to(torch_device).to(torch.int)
# Do a forward pass to fill the prefix cache and compile the kernels if necessary
logits = self.quantized_model(input_ids, cache_position=cache_position, return_dict=False, use_cache=True)[0]
logits = self.quantized_model(
input_ids,
cache_position=cache_position,
past_key_values=past_key_values,
return_dict=False,
use_cache=True,
)[0]
next_token = torch.argmax(logits[:, [-1]], dim=-1).to(torch.int)
generated_ids[:, [seq_length]] = next_token
......@@ -229,7 +246,9 @@ class AqlmTest(unittest.TestCase):
cache_position = torch.tensor([seq_length + 1], device=torch_device)
for _ in range(1, self.max_new_tokens):
with torch.backends.cuda.sdp_kernel(enable_flash=False, enable_mem_efficient=False, enable_math=True):
next_token = decode_one_tokens(self.quantized_model, next_token.clone(), None, cache_position)
next_token = decode_one_tokens(
self.quantized_model, next_token.clone(), None, cache_position, past_key_values
)
generated_ids.index_copy_(1, cache_position, next_token)
cache_position += 1
......
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