[`MPT`] Add MosaicML's `MPT` model to transformers (#24629)

* draft add new model like

* some cleaning of the config

* nits

* add nested configs

* nits

* update

* update

* added layer norms + triton kernels

* consider only LPLayerNorm for now.

* update

* all keys match.

* Update

* fixing nits here and there

* working forward pass.

* removed einops dependency

* nits

* format

* add alibi

* byebye head mask

* refactor attention

* nits.

* format

* fix nits.

* nuke ande updates

* nuke tokenizer test

* don't reshape query with kv heads

* added a bit of documentation.

* remove unneeded things

* nuke more stuff

* nit

* logits match - same generations

* rm unneeded methods

* 1 remaining failing CI test

* nit

* fix nits

* fix docs

* fix docs

* rm tokenizer

* fixup

* fixup

* fixup and fix tests

* fixed configuration object.

* use correct activation

* few minor fixes

* clarify docs a bit

* logits match à 1e-12

* skip and unskip a test

* added some slow tests.

* fix readme

* add more details

* Update docs/source/en/model_doc/mpt.md
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* Apply suggestions from code review
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* fix configuration issues

* more fixes in config

* added more models

* Apply suggestions from code review
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* remove unneeded position ids

* fix some  comments

* Apply suggestions from code review
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* revert suggestion

* mpt alibi + added batched generation

* Update src/transformers/models/mpt/__init__.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* remove init config

* Update src/transformers/models/mpt/configuration_mpt.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

* fix nit

* add another slow test

* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* fits in one line

* some refactor because make fixup doesn't pass

* add ft notebook

* update md

* correct doc path

---------
Co-authored-by: younesbelkada <younesbelkada@gmail.com>
Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

src/transformers/models/mpt/configuration_mpt.py

+# coding=utf-8
+# Copyright 2023 HuggingFace Inc. team and MosaicML NLP team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+""" Mpt configuration"""
+import copy
+from typing import TYPE_CHECKING, Optional, Union
+
+
+if TYPE_CHECKING:
+    pass
+
+from ...configuration_utils import PretrainedConfig
+from ...utils import logging
+
+
+logger = logging.get_logger(__name__)
+
+MPT_PRETRAINED_CONFIG_ARCHIVE_MAP = {
+    "mosaicml/mpt-7b": "https://huggingface.co/mosaicml/mpt-7b/resolve/main/config.json",
+}
+
+
+class MptAttentionConfig(PretrainedConfig):
+    """
+    This is the configuration class to store the configuration of a [`MptAttention`] class. It is used to instantiate
+    attention layers according to the specified arguments, defining the layers architecture. Instantiating a
+    configuration with the defaults will yield a similar configuration to that of the MPT
+    [mosaicml/mpt-7b](https://huggingface.co/mosaicml/mpt-7b) architecture. Most of the arguments are kept for backward
+    compatibility with previous MPT models that are hosted on the Hub (previously with `trust_remote_code=True`).
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+    Args:
+        attn_type (`str`, *optional*, defaults to `"multihead_attention"`):
+            type of attention to use. Options: `"multihead_attention"`, `"multiquery_attention"`.
+        attn_pdrop (`float`, *optional*, defaults to 0.0):
+            The dropout probability for the attention layers.
+        attn_impl (`str`, *optional*, defaults to `"torch"`):
+            The attention implementation to use. One of `"torch"`, `"flash"`, or `"triton"`.
+        clip_qkv (`float`, *optional*):
+            If not `None`, clip the queries, keys, and values in the attention layer to this value.
+        softmax_scale (`float`, *optional*, defaults to `None`):
+            If not `None`, scale the softmax in the attention layer by this value. If `None`, will default to
+            `1/sqrt(hidden_size)`.
+        prefix_lm (`bool`, *optional*, defaults to `False`)):
+            Whether the model should operate as a Prefix LM. This requires passing an extra `prefix_mask` argument
+            which indicates which tokens belong to the prefix. Tokens in the prefix can attend to one another
+            bi-directionally. Tokens outside the prefix use causal attention.
+        qk_ln (`bool`, *optional*, defaults to `False`):
+            Whether to apply layer normalization to the queries and keys in the attention layer.
+        attn_uses_sequence_id (`bool`, *optional*, defaults to `False`)):
+            Whether to restrict attention to tokens that have the same token_type_ids. When the model is in `train`
+            mode, this requires passing an extra *token_type_ids* argument which indicates which sub-sequence each
+            token belongs to. Defaults to `False` meaning any provided *token_type_ids* will be ignored.
+        alibi (`bool`, *optional*, defaults to `True`):
+            Whether or not to use the alibi bias instead of positional embedding.
+        alibi_bias_max (`int`, *optional*, defaults to 8):
+            The maximum value of the alibi bias.
+    """
+
+    def __init__(
+        self,
+        attn_type="multihead_attention",
+        attn_pdrop=0,
+        attn_impl="torch",
+        clip_qkv=None,
+        softmax_scale=None,
+        prefix_lm=False,
+        qk_ln=False,
+        attn_uses_sequence_id=False,
+        alibi=True,
+        alibi_bias_max=8,
+        **kwargs,
+    ):
+        super().__init__()
+        self.attn_type = attn_type
+        self.attn_pdrop = attn_pdrop
+        self.attn_impl = attn_impl
+        self.clip_qkv = clip_qkv
+        self.softmax_scale = softmax_scale
+        self.prefix_lm = prefix_lm
+        self.attn_uses_sequence_id = attn_uses_sequence_id
+        self.alibi = alibi
+        self.qk_ln = qk_ln
+        self.alibi_bias_max = alibi_bias_max
+
+        if attn_type not in ["multihead_attention", "multiquery_attention"]:
+            raise ValueError(
+                f"`attn_type` has to be either `multihead_attention` or `multiquery_attention`. Received: {attn_type}"
+            )
+
+
+class MptConfig(PretrainedConfig):
+    """
+    This is the configuration class to store the configuration of a [`MptModel`]. It is used to instantiate a Mpt model
+    according to the specified arguments, defining the model architecture. Instantiating a configuration with the
+    defaults will yield a similar configuration to the Mpt-7b architecture
+    [mosaicml/mpt-7b](https://huggingface.co/mosaicml/mpt-7b).
+
+    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
+    documentation from [`PretrainedConfig`] for more information.
+
+
+    Args:
+        d_model (`int`, *optional*, defaults to 2048):
+            Dimensionality of the embeddings and hidden states.
+        n_heads (`int`, *optional*, defaults to 16):
+            Number of attention heads for each attention layer in the Transformer encoder.
+        n_layers (`int`, *optional*, defaults to 24):
+            Number of hidden layers in the Transformer encoder.
+        expansion_ratio (`int`, *optional*, defaults to 4):
+            The ratio of the up/down scale in the MLP.
+        max_seq_len (`int`, *optional*, defaults to 2048):
+            The maximum sequence length of the model.
+        vocab_size (`int`, *optional*, defaults to 50368):
+            Vocabulary size of the Mpt model. Defines the maximum number of different tokens that can be represented by
+            the `inputs_ids` passed when calling [`MptModel`]. Check [this
+            discussion](https://huggingface.co/bigscience/mpt/discussions/120#633d28389addb8530b406c2a) on how the
+            `vocab_size` has been defined.
+        resid_pdrop (`float`, *optional*, defaults to 0.1):
+            The dropout probability applied to the attention output before combining with residual.
+        layer_norm_epsilon (`float`, *optional*, defaults to 1e-5):
+            The epsilon to use in the layer normalization layers.
+        emb_pdrop (`float`, *optional*, defaults to 0.1):
+            The dropout probability for the embedding layer.
+        learned_pos_emb (`bool`, *optional*, defaults to `False`):
+            Whether to use learned positional embeddings.
+        attn_config (`dict`, *optional*):
+            A dictionary used to configure the model's attention module.
+        init_device (`str`, *optional*):
+            The device to use for parameter initialization. Defined for backward compatibility
+        logit_scale (`float`, *optional*):
+            If not None, scale the logits by this value.
+        no_bias (`bool`, *optional*, defaults to `True`):
+            Whether to use bias in all linear layers.
+        verbose (`int`, *optional*, defaults to 0):
+            The verbosity level to use for logging. Used in the previous versions of MPT models for logging. This
+            argument is deprecated.
+        embedding_fraction (`float`, *optional*, defaults to 1.0):
+            The fraction to scale the gradients of the embedding layer by.
+        norm_type (`str`, *optional*, defaults to `"low_precision_layernorm"`):
+            Type of layer norm to use. All MPT models uses the same layer norm implementation. Defined for backward
+            compatibility.
+        use_cache (`bool`, *optional*, defaults to `True`):
+            Whether or not the model should return the last key/values attentions (not used by all models).
+        initializer_range (`float`, *optional*, defaults to 0.02):
+            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
+
+    Example:
+
+    ```python
+    >>> from transformers import MptConfig, MptModel
+
+    >>> # Initializing a Mpt configuration
+    >>> configuration = MptConfig()
+
+    >>> # Initializing a model (with random weights) from the configuration
+    >>> model = MptModel(configuration)
+
+    >>> # Accessing the model configuration
+    >>> configuration = model.config
+    ```
+    """
+
+    model_type = "mpt"
+    attribute_map = {
+        "num_attention_heads": "n_heads",
+        "hidden_size": "d_model",
+        "num_hidden_layers": "n_layers",
+    }
+
+    def __init__(
+        self,
+        d_model: int = 2048,
+        n_heads: int = 16,
+        n_layers: int = 24,
+        expansion_ratio: int = 4,
+        max_seq_len: int = 2048,
+        vocab_size: int = 50368,
+        resid_pdrop: float = 0.0,
+        layer_norm_epsilon: float = 1e-5,
+        emb_pdrop: float = 0.0,
+        learned_pos_emb: bool = True,
+        attn_config: MptAttentionConfig = None,
+        init_device: str = "cpu",
+        logit_scale: Optional[Union[float, str]] = None,
+        no_bias: bool = True,
+        verbose: int = 0,
+        embedding_fraction: float = 1.0,
+        norm_type: str = "low_precision_layernorm",
+        use_cache: bool = False,
+        initializer_range=0.02,
+        **kwargs,
+    ):
+        self.d_model = d_model
+        self.n_heads = n_heads
+        self.n_layers = n_layers
+        self.expansion_ratio = expansion_ratio
+        self.max_seq_len = max_seq_len
+        self.vocab_size = vocab_size
+        self.resid_pdrop = resid_pdrop
+        self.emb_pdrop = emb_pdrop
+        self.learned_pos_emb = learned_pos_emb
+        self.init_device = init_device
+        self.logit_scale = logit_scale
+        self.no_bias = no_bias
+        self.verbose = verbose
+        self.embedding_fraction = embedding_fraction
+        self.norm_type = norm_type
+        self.layer_norm_epsilon = layer_norm_epsilon
+        self.use_cache = use_cache
+        self.initializer_range = initializer_range
+
+        if attn_config is None:
+            self.attn_config = MptAttentionConfig()
+        elif isinstance(attn_config, dict):
+            self.attn_config = MptAttentionConfig(**attn_config)
+        elif isinstance(attn_config, MptAttentionConfig):
+            self.attn_config = attn_config
+        else:
+            raise ValueError(
+                f"`attn_config` has to be either a `MptAttentionConfig` or a dictionary. Received: {type(attn_config)}"
+            )
+
+        super().__init__(**kwargs)
+
+    def to_dict(self):
+        """
+        Serializes this instance to a Python dictionary. Override the default [`~PretrainedConfig.to_dict`].
+
+        Returns:
+            `Dict[str, any]`: Dictionary of all the attributes that make up this configuration instance,
+        """
+        output = copy.deepcopy(self.__dict__)
+        output["attn_config"] = (
+            self.attn_config.to_dict() if not isinstance(self.attn_config, dict) else self.attn_config
+        )
+        output["model_type"] = self.__class__.model_type
+        return output

src/transformers/models/mpt/modeling_mpt.py

+# coding=utf-8
+# Copyright 2023 HuggingFace Inc. team and MosaicML NLP team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""PyTorch MPT model."""
+
+import math
+from typing import Optional, Tuple, Union
+
+import torch
+import torch.utils.checkpoint
+from torch import nn
+from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, LayerNorm, MSELoss
+from torch.nn import functional as F
+
+from ...file_utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward
+from ...modeling_outputs import (
+    BaseModelOutputWithPastAndCrossAttentions,
+    CausalLMOutputWithCrossAttentions,
+    QuestionAnsweringModelOutput,
+    SequenceClassifierOutputWithPast,
+    TokenClassifierOutput,
+)
+from ...modeling_utils import PreTrainedModel
+from ...utils import logging
+from .configuration_mpt import MptConfig
+
+
+logger = logging.get_logger(__name__)
+
+_CHECKPOINT_FOR_DOC = "mosaicml/mpt-7b"
+_CONFIG_FOR_DOC = "MptConfig"
+
+MPT_PRETRAINED_MODEL_ARCHIVE_LIST = [
+    "mosaicml/mpt-7b",
+    "mosaicml/mpt-7b-storywriter",
+    "mosaicml/mpt-7b-instruct",
+    "mosaicml/mpt-7b-8k",
+    "mosaicml/mpt-7b-8k-instruct",
+    "mosaicml/mpt-7b-8k-chat",
+    "mosaicml/mpt-30b",
+    "mosaicml/mpt-30b-instruct",
+    "mosaicml/mpt-30b-chat"
+    # See all MPT models at https://huggingface.co/models?filter=mpt
+]
+
+
+# Copied from transformers.models.bloom.modeling_bloom._make_causal_mask
+def _make_causal_mask(
+    input_ids_shape: torch.Size, device: torch.device, past_key_values_length: int
+) -> torch.BoolTensor:
+    """
+    Make causal mask used for self-attention.
+    """
+    batch_size, target_length = input_ids_shape
+    mask = torch.empty((target_length, target_length + past_key_values_length), dtype=torch.bool, device=device)
+    # ONNX doesn't support `torch.Tensor.triu` properly, thus we use this workaround
+    seq_ids = torch.arange(target_length, device=device)
+    mask[:, past_key_values_length:] = seq_ids[:, None] < seq_ids[None, :]
+
+    if past_key_values_length > 0:
+        mask[:, :past_key_values_length] = False
+
+    expanded_mask = mask[None, None, :, :].expand(batch_size, 1, target_length, target_length + past_key_values_length)
+    return expanded_mask
+
+
+# Copied from transformers.models.bloom.modeling_bloom._expand_mask
+def _expand_mask(mask: torch.Tensor, tgt_length: int) -> torch.BoolTensor:
+    """
+    Expands attention_mask from `[batch_size, src_length]` to `[batch_size, 1, tgt_length, src_length]`.
+    """
+    batch_size, src_length = mask.shape
+    tgt_length = tgt_length if tgt_length is not None else src_length
+
+    expanded_mask = ~(mask[:, None, None, :].to(torch.bool))
+    return expanded_mask.expand(batch_size, 1, tgt_length, src_length)
+
+
+def build_mpt_alibi_tensor(num_heads, sequence_length, alibi_bias_max=8, device=None):
+    r"""
+    Link to paper: https://arxiv.org/abs/2108.12409 - Alibi tensor is not causal as the original paper mentions, it
+    relies on a translation invariance of softmax for quick implementation. This implementation has been copied from
+    the alibi implementation of MPT source code that led to slightly different results than the Bloom alibi:
+    https://huggingface.co/mosaicml/mpt-7b/blob/main/attention.py#L292
+    """
+    alibi = torch.arange(1 - sequence_length, 1, dtype=torch.int32, device=device).view(1, 1, 1, sequence_length)
+    num_heads_power_of_2 = 2 ** math.ceil(math.log2(num_heads))
+
+    base = torch.arange(1, num_heads_power_of_2 + 1, dtype=torch.float32, device=device)
+    base = base * (alibi_bias_max / num_heads_power_of_2)
+
+    slopes = 1.0 / torch.pow(2, base)
+    slopes = slopes.view(1, num_heads, 1, 1)
+
+    if num_heads_power_of_2 != num_heads:
+        slopes = torch.concat([slopes[1::2], slopes[::2]])[:num_heads]
+
+    alibi = alibi * slopes
+    return alibi.squeeze(0)
+
+
+class MptAttention(nn.Module):
+    """Multi-head self attention.
+    Using torch or triton attention implemetation enables user to also use additive bias.
+    """
+
+    def __init__(self, config: MptConfig):
+        super().__init__()
+        self.hidden_size = config.hidden_size
+        self.n_heads = config.n_heads
+        self.max_seq_length = config.max_seq_len
+        self.head_dim = self.hidden_size // self.n_heads
+        self.softmax_scale = config.attn_config.softmax_scale
+        if self.softmax_scale is None:
+            self.softmax_scale = 1 / math.sqrt(self.hidden_size / self.n_heads)
+
+        self.attn_dropout_p = config.attn_config.attn_pdrop
+        self.Wqkv = nn.Linear(self.hidden_size, 3 * self.hidden_size, bias=False)
+        self.out_proj = nn.Linear(self.hidden_size, self.hidden_size, bias=False)
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        position_bias: torch.Tensor,
+        past_key_value: Optional[Tuple[torch.Tensor]] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+    ):
+        batch_size, seq_length = hidden_states.shape[:2]
+
+        mixed_qkv = self.Wqkv(hidden_states)
+        query_states, key_states, value_states = mixed_qkv.chunk(3, dim=2)
+        query_states = query_states.reshape(batch_size, seq_length, self.n_heads, self.head_dim).transpose(1, 2)
+        key_states = key_states.reshape(batch_size, seq_length, self.n_heads, self.head_dim).transpose(1, 2)
+        value_states = value_states.reshape(batch_size, seq_length, self.n_heads, self.head_dim).transpose(1, 2)
+
+        if past_key_value is not None:
+            if len(past_key_value) != 0:
+                key_states = torch.cat([past_key_value[0], key_states], dim=2)
+                value_states = torch.cat([past_key_value[1], value_states], dim=2)
+            past_key_value = (key_states, value_states)
+        else:
+            past_key_value = (key_states, value_states)
+
+        attention_scores = torch.matmul(query_states, key_states.transpose(-1, -2)) * self.softmax_scale
+
+        query_length = seq_length
+        if past_key_value is not None:
+            query_length += past_key_value[0].shape[2]
+
+        if position_bias is not None:
+            if len(position_bias.shape) != 3:
+                raise ValueError(f"Expecting position_bias shape to be 3 dimensions, got {len(position_bias.shape)}")
+            key_length = key_states.shape[-2]
+
+            position_bias_query_index = max(0, position_bias.size(1) - query_length)
+            position_bias_key_index = max(0, position_bias.size(2) - key_length)
+
+            position_bias = position_bias[:, position_bias_query_index:, position_bias_key_index:]
+
+            attention_scores = attention_scores + position_bias
+
+        if attention_mask is not None:
+            attention_scores = attention_scores.masked_fill(attention_mask, torch.finfo(query_states.dtype).min)
+
+        # (batch_size, n_heads, seq_length, key_length)
+        attn_weights = nn.functional.softmax(attention_scores.float(), dim=-1).to(value_states.dtype)
+        attn_weights = nn.functional.dropout(attn_weights, p=self.attn_dropout_p, training=self.training)
+
+        context_states = torch.matmul(attn_weights, value_states)
+        context_states = context_states.permute(0, 2, 1, 3).contiguous().view(batch_size, seq_length, -1)
+        attn_output = self.out_proj(context_states)
+
+        return attn_output, attn_weights, past_key_value
+
+
+class MptMLP(nn.Module):
+    def __init__(self, config: MptConfig):
+        super().__init__()
+        hidden_size = config.hidden_size
+
+        self.up_proj = nn.Linear(hidden_size, 4 * hidden_size, bias=False)
+        self.act = nn.GELU(approximate="none")
+        self.down_proj = nn.Linear(4 * hidden_size, hidden_size, bias=False)
+        self.hidden_dropout = config.attn_config.attn_pdrop
+
+    def forward(self, hidden_states: torch.Tensor, residual: torch.Tensor) -> torch.Tensor:
+        hidden_states = self.act(self.up_proj(hidden_states))
+
+        intermediate_output = self.down_proj(hidden_states)
+
+        output = F.dropout(intermediate_output, p=self.hidden_dropout, training=self.training)
+        output = output + residual
+
+        return output
+
+
+class MptBlock(nn.Module):
+    def __init__(self, config: MptConfig):
+        super().__init__()
+        hidden_size = config.hidden_size
+
+        self.norm_1 = LayerNorm(hidden_size, eps=config.layer_norm_epsilon)
+        # backward compatibility with weights on the Hub
+        self.norm_1.bias = None
+
+        self.num_heads = config.n_heads
+        self.attn = MptAttention(config)
+
+        self.norm_2 = LayerNorm(hidden_size, eps=config.layer_norm_epsilon)
+        # backward compatibility with weights on the Hub
+        self.norm_2.bias = None
+
+        self.ffn = MptMLP(config)
+
+        self.dropout_rate = config.attn_config.attn_pdrop
+        self.resid_attn_dropout = nn.Dropout(self.dropout_rate)
+
+    def forward(
+        self,
+        hidden_states: torch.Tensor,
+        position_bias: torch.Tensor,
+        attention_mask: torch.Tensor,
+        layer_past: Optional[Tuple[torch.Tensor, torch.Tensor]] = None,
+        use_cache: bool = False,
+        output_attentions: bool = False,
+    ):
+        # hidden_states: [batch_size, seq_length, hidden_size]
+        # Layer norm at the beginning of the transformer layer.
+        layernorm_output = self.norm_1(hidden_states)
+
+        residual = hidden_states
+
+        # Self attention.
+        attn_outputs, attn_weights, past_key_value = self.attn(
+            layernorm_output,
+            position_bias=position_bias,
+            attention_mask=attention_mask,
+            past_key_value=layer_past,
+        )
+
+        hidden_states = self.resid_attn_dropout(attn_outputs) + residual
+
+        layernorm_output = self.norm_2(hidden_states)
+
+        # Get residual
+        residual = hidden_states
+
+        # MLP.
+        output = self.ffn(layernorm_output, residual)
+        outputs = (output,)
+
+        if use_cache:
+            outputs += (past_key_value,)
+
+        if output_attentions:
+            outputs += (attn_weights,)
+
+        return outputs  # hidden_states, present, attentions
+
+
+class MptPreTrainedModel(PreTrainedModel):
+    config_class = MptConfig
+    base_model_prefix = "transformer"
+    supports_gradient_checkpointing = True
+    _no_split_modules = ["MptBlock"]
+    _keys_to_ignore_on_load_missing = [r"lm_head.*."]
+
+    def __init__(self, *inputs, **kwargs):
+        super().__init__(*inputs, **kwargs)
+
+    def _init_weights(self, module: nn.Module):
+        """Initialize the weights."""
+        if isinstance(module, nn.Linear):
+            # Slightly different from the TF version which uses truncated_normal for initialization
+            # cf https://github.com/pytorch/pytorch/pull/5617
+            module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
+            if module.bias is not None:
+                module.bias.data.zero_()
+        elif isinstance(module, nn.Embedding):
+            module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
+            if module.padding_idx is not None:
+                module.weight.data[module.padding_idx].zero_()
+        elif isinstance(module, LayerNorm):
+            if module.bias is not None:
+                module.bias.data.zero_()
+            module.weight.data.fill_(1.0)
+
+    def _set_gradient_checkpointing(self, module: nn.Module, value: bool = False):
+        if isinstance(module, MptModel):
+            module.gradient_checkpointing = value
+
+    @staticmethod
+    def _convert_to_mpt_cache(
+        past_key_value: Tuple[Tuple[torch.Tensor, torch.Tensor]]
+    ) -> Tuple[Tuple[torch.Tensor, torch.Tensor]]:
+        """
+        Converts the cache to the format expected by Mpt, i.e. to tuple(tuple([batch_size * num_heads, ...]))
+        """
+        batch_size, num_heads, head_dim, seq_length = past_key_value[0][0].shape
+        batch_size_times_num_heads = batch_size * num_heads
+        # key:  [batch_size, num_heads, head_dim, seq_length] -> [batch_size * num_heads, head_dim, seq_length]
+        # value: [batch_size, num_heads, seq_length, head_dim] -> [batch_size * num_heads, seq_length, head_dim]
+        return tuple(
+            (
+                layer_past[0].reshape(batch_size_times_num_heads, head_dim, seq_length),
+                layer_past[1].reshape(batch_size_times_num_heads, seq_length, head_dim),
+            )
+            for layer_past in past_key_value
+        )
+
+
+MPT_START_DOCSTRING = r"""
+
+    This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
+    library implements for all its model (such as downloading or saving, resizing the input embeddings etc.)
+
+    This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
+    Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
+    and behavior.
+
+    Parameters:
+        config ([`MptConfig`]): Model configuration class with all the parameters of the model.
+            Initializing with a config file does not load the weights associated with the model, only the
+            configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
+"""
+
+MPT_INPUTS_DOCSTRING = r"""
+    Args:
+        input_ids (`torch.LongTensor` of shape `(batch_size, input_ids_length)`):
+            `input_ids_length` = `sequence_length` if `past_key_values` is `None` else `past_key_values[0][0].shape[2]`
+            (`sequence_length` of input past key value states). Indices of input sequence tokens in the vocabulary.
+
+            If `past_key_values` is used, only `input_ids` that do not have their past calculated should be passed as
+            `input_ids`.
+
+            Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
+            [`PreTrainedTokenizer.__call__`] for details.
+
+            [What are input IDs?](../glossary#input-ids)
+        past_key_values (`Tuple[Tuple[torch.Tensor]]` of length `config.n_layers`):
+            Contains precomputed hidden-states (key and values in the attention blocks) as computed by the model (see
+            `past_key_values` output below). Can be used to speed up sequential decoding. The `input_ids` which have
+            their past given to this model should not be passed as `input_ids` as they have already been computed.
+
+            Each element of `past_key_values` is a tuple (past_key, past_value):
+            - past_key: [batch_size * num_heads, head_dim, kv_length]
+            - past_value: [batch_size * num_heads, kv_length, head_dim]
+        attention_mask (`torch.FloatTensor` of shape `(batch_size, sequence_length)`, *optional*):
+            Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
+
+            - 1 for tokens that are **not masked**,
+            - 0 for tokens that are **masked**.
+
+            [What are attention masks?](../glossary#attention-mask)
+
+        inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
+            Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
+            is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
+            model's internal embedding lookup matrix.
+
+            If `past_key_values` is used, optionally only the last `inputs_embeds` have to be input (see
+            `past_key_values`).
+        use_cache (`bool`, *optional*):
+            If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
+            `past_key_values`).
+        output_attentions (`bool`, *optional*):
+            Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
+            tensors for more detail.
+        output_hidden_states (`bool`, *optional*):
+            Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
+            more detail.
+        return_dict (`bool`, *optional*):
+            Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
+"""
+
+
+@add_start_docstrings(
+    "The bare Mpt Model transformer outputting raw hidden-states without any specific head on top.",
+    MPT_START_DOCSTRING,
+)
+class MptModel(MptPreTrainedModel):
+    def __init__(self, config: MptConfig):
+        super().__init__(config)
+
+        self.hidden_size = config.hidden_size
+        self.num_heads = config.n_heads
+
+        # Embedding + LN Embedding
+        self.wte = nn.Embedding(config.vocab_size, self.hidden_size)
+
+        # Transformer blocks
+        self.blocks = nn.ModuleList([MptBlock(config) for _ in range(config.n_layers)])
+
+        # Final Layer Norm
+        self.norm_f = LayerNorm(self.hidden_size, eps=config.layer_norm_epsilon)
+        # backward compatibility with weights on the Hub
+        self.norm_f.bias = None
+
+        self.gradient_checkpointing = False
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    def get_input_embeddings(self):
+        return self.wte
+
+    def _prepare_attn_mask(
+        self, attention_mask: torch.Tensor, input_shape: Tuple[int, int], past_key_values_length: int
+    ) -> torch.BoolTensor:
+        # create causal mask
+        # [batch_size, seq_length] -> [batch_size, 1, tgt_length, src_length]
+        if input_shape[1] + past_key_values_length != attention_mask.shape[1]:
+            raise ValueError(
+                "Attention mask shape should be (batch_size, seq_length + past_key_values_length)"
+                f" but is {attention_mask.shape} with input_ids shape {input_shape} and past length"
+                f" {past_key_values_length}."
+            )
+        combined_attention_mask = None
+        device = attention_mask.device
+        _, src_length = input_shape
+
+        if src_length > 1:
+            combined_attention_mask = _make_causal_mask(
+                input_shape, device=device, past_key_values_length=past_key_values_length
+            )
+
+        # [batch_size, seq_length] -> [batch_size, 1, tgt_length, src_length]
+        expanded_attn_mask = _expand_mask(attention_mask, tgt_length=src_length)
+        combined_attention_mask = (
+            expanded_attn_mask if combined_attention_mask is None else expanded_attn_mask | combined_attention_mask
+        )
+
+        return combined_attention_mask
+
+    def set_input_embeddings(self, new_embeddings: torch.Tensor):
+        self.wte = new_embeddings
+
+    @add_start_docstrings_to_model_forward(MPT_INPUTS_DOCSTRING)
+    @add_code_sample_docstrings(
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=BaseModelOutputWithPastAndCrossAttentions,
+        config_class=_CONFIG_FOR_DOC,
+    )
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+        inputs_embeds: Optional[torch.LongTensor] = None,
+        use_cache: Optional[bool] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        return_dict: Optional[bool] = None,
+    ) -> Union[Tuple[torch.Tensor, ...], BaseModelOutputWithPastAndCrossAttentions]:
+        output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
+        output_hidden_states = (
+            output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
+        )
+        use_cache = use_cache if use_cache is not None else self.config.use_cache
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        if input_ids is not None and inputs_embeds is not None:
+            raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
+        elif input_ids is not None:
+            batch_size, seq_length = input_ids.shape
+        elif inputs_embeds is not None:
+            batch_size, seq_length, _ = inputs_embeds.shape
+        else:
+            raise ValueError("You have to specify either input_ids or inputs_embeds")
+
+        if past_key_values is None:
+            past_key_values = tuple([None] * len(self.blocks))
+
+        if inputs_embeds is None:
+            inputs_embeds = self.wte(input_ids)
+
+        hidden_states = inputs_embeds
+
+        presents = () if use_cache else None
+        all_self_attentions = () if output_attentions else None
+        all_hidden_states = () if output_hidden_states else None
+
+        if self.gradient_checkpointing and self.training:
+            if use_cache:
+                logger.warning_once(
+                    "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
+                )
+                use_cache = False
+
+        # Compute alibi tensor: check build_alibi_tensor documentation
+        seq_length_with_past = seq_length
+        past_key_values_length = 0
+        if past_key_values[0] is not None:
+            past_key_values_length = past_key_values[0][0].shape[2]
+            seq_length_with_past = seq_length_with_past + past_key_values_length
+        if attention_mask is None:
+            attention_mask = torch.ones((batch_size, seq_length_with_past), device=hidden_states.device)
+        else:
+            attention_mask = attention_mask.to(hidden_states.device)
+
+        alibi = build_mpt_alibi_tensor(self.num_heads, self.config.max_seq_len, device=hidden_states.device)
+
+        causal_mask = self._prepare_attn_mask(
+            attention_mask,
+            input_shape=(batch_size, seq_length),
+            past_key_values_length=past_key_values_length,
+        )
+
+        for i, (block, layer_past) in enumerate(zip(self.blocks, past_key_values)):
+            if output_hidden_states:
+                all_hidden_states = all_hidden_states + (hidden_states,)
+
+            if self.gradient_checkpointing and self.training:
+
+                def create_custom_forward(module):
+                    def custom_forward(*inputs):
+                        # None for past_key_value
+                        return module(*inputs, use_cache=use_cache, output_attentions=output_attentions)
+
+                    return custom_forward
+
+                outputs = torch.utils.checkpoint.checkpoint(
+                    create_custom_forward(block),
+                    hidden_states,
+                    alibi,
+                    causal_mask,
+                    layer_past,
+                )
+            else:
+                outputs = block(
+                    hidden_states,
+                    layer_past=layer_past,
+                    attention_mask=causal_mask,
+                    use_cache=use_cache,
+                    output_attentions=output_attentions,
+                    position_bias=alibi,
+                )
+
+            hidden_states = outputs[0]
+            if use_cache is True:
+                presents = presents + (outputs[1],)
+
+            if output_attentions:
+                all_self_attentions = all_self_attentions + (outputs[2 if use_cache else 1],)
+
+        # Add last hidden state
+        hidden_states = self.norm_f(hidden_states)
+
+        if output_hidden_states:
+            all_hidden_states = all_hidden_states + (hidden_states,)
+
+        if not return_dict:
+            return tuple(v for v in [hidden_states, presents, all_hidden_states, all_self_attentions] if v is not None)
+
+        return BaseModelOutputWithPastAndCrossAttentions(
+            last_hidden_state=hidden_states,
+            past_key_values=presents,
+            hidden_states=all_hidden_states,
+            attentions=all_self_attentions,
+        )
+
+
+@add_start_docstrings(
+    """
+    The MPT Model transformer with a language modeling head on top (linear layer with weights tied to the input
+    embeddings).
+    """,
+    MPT_START_DOCSTRING,
+)
+class MptForCausalLM(MptPreTrainedModel):
+    _tied_weights_keys = ["lm_head.weight"]
+
+    def __init__(self, config: MptConfig):
+        super().__init__(config)
+        self.transformer = MptModel(config)
+        self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    def get_output_embeddings(self):
+        return self.lm_head
+
+    def set_output_embeddings(self, new_embeddings: torch.Tensor):
+        self.lm_head = new_embeddings
+
+    def prepare_inputs_for_generation(
+        self,
+        input_ids: torch.LongTensor,
+        past_key_values: Optional[torch.Tensor] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+        inputs_embeds: Optional[torch.Tensor] = None,
+        use_cache: Optional[bool] = None,
+        **kwargs,
+    ) -> dict:
+        # only last token for input_ids if past is not None
+        if past_key_values:
+            input_ids = input_ids[:, -1].unsqueeze(-1)
+
+        # 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}
+        else:
+            model_inputs = {"input_ids": input_ids}
+
+        model_inputs.update(
+            {
+                "past_key_values": past_key_values,  # NITS should it be layer_past?
+                "use_cache": use_cache,
+                "attention_mask": attention_mask,
+            }
+        )
+        return model_inputs
+
+    @add_start_docstrings_to_model_forward(MPT_INPUTS_DOCSTRING)
+    @add_code_sample_docstrings(
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=CausalLMOutputWithCrossAttentions,
+        config_class=_CONFIG_FOR_DOC,
+    )
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+        inputs_embeds: Optional[torch.Tensor] = None,
+        labels: Optional[torch.Tensor] = None,
+        use_cache: Optional[bool] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        return_dict: Optional[bool] = None,
+    ) -> Union[Tuple[torch.Tensor], CausalLMOutputWithCrossAttentions]:
+        r"""
+        labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
+            Labels for language modeling. Note that the labels **are shifted** inside the model, i.e. you can set
+            `labels = input_ids` Indices are selected in `[-100, 0, ..., config.vocab_size]` All labels set to `-100`
+            are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size]`
+        """
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        transformer_outputs = self.transformer(
+            input_ids,
+            past_key_values=past_key_values,
+            attention_mask=attention_mask,
+            inputs_embeds=inputs_embeds,
+            use_cache=use_cache,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+        hidden_states = transformer_outputs[0]
+
+        lm_logits = self.lm_head(hidden_states)
+
+        loss = None
+        if labels is not None:
+            # move labels to correct device to enable model parallelism
+            labels = labels.to(lm_logits.device)
+            # Shift so that tokens < n predict n
+            shift_logits = lm_logits[..., :-1, :].contiguous()
+            shift_labels = labels[..., 1:].contiguous()
+            batch_size, seq_length, vocab_size = shift_logits.shape
+            # Flatten the tokens
+            loss_fct = CrossEntropyLoss()
+            loss = loss_fct(
+                shift_logits.view(batch_size * seq_length, vocab_size), shift_labels.view(batch_size * seq_length)
+            )
+
+        if not return_dict:
+            output = (lm_logits,) + transformer_outputs[1:]
+            return ((loss,) + output) if loss is not None else output
+
+        return CausalLMOutputWithCrossAttentions(
+            loss=loss,
+            logits=lm_logits,
+            past_key_values=transformer_outputs.past_key_values,
+            hidden_states=transformer_outputs.hidden_states,
+            attentions=transformer_outputs.attentions,
+        )
+
+    def _reorder_cache(
+        self, past: Tuple[Tuple[torch.Tensor, torch.Tensor], ...], beam_idx: torch.LongTensor
+    ) -> Tuple[Tuple[torch.Tensor, torch.Tensor], ...]:
+        """
+        This function is used to re-order the `past_key_values` cache if [`~PreTrainedModel.beam_search`] or
+        [`~PreTrainedModel.beam_sample`] is called. This is required to match `past_key_values` with the correct
+        beam_idx at every generation step.
+
+        Output shares the same memory storage as `past`.
+        """
+        # Get a copy of `beam_idx` on all the devices where we need those indices.
+        device_to_beam_idx = {
+            past_state.device: beam_idx.to(past_state.device) for layer_past in past for past_state in layer_past
+        }
+        reordered_past = tuple(
+            (
+                layer_past[0].index_select(0, device_to_beam_idx[layer_past[0].device]),
+                layer_past[1].index_select(0, device_to_beam_idx[layer_past[0].device]),
+            )
+            for layer_past in past
+        )
+        return reordered_past
+
+
+@add_start_docstrings(
+    """
+    The MPT Model transformer with a sequence classification head on top (linear layer).
+
+    [`MptForSequenceClassification`] uses the last token in order to do the classification, as other causal models
+    (e.g. GPT-1) do.
+
+    Since it does classification on the last token, it requires to know the position of the last token. If a
+    `pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
+    no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
+    padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
+    each row of the batch).
+    """,
+    MPT_START_DOCSTRING,
+)
+class MptForSequenceClassification(MptPreTrainedModel):
+    def __init__(self, config: MptConfig):
+        super().__init__(config)
+        self.num_labels = config.num_labels
+        self.transformer = MptModel(config)
+        self.score = nn.Linear(config.hidden_size, config.num_labels, bias=False)
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    @add_start_docstrings_to_model_forward(MPT_INPUTS_DOCSTRING)
+    @add_code_sample_docstrings(
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=SequenceClassifierOutputWithPast,
+        config_class=_CONFIG_FOR_DOC,
+    )
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+        inputs_embeds: Optional[torch.Tensor] = None,
+        labels: Optional[torch.Tensor] = None,
+        use_cache: Optional[bool] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        return_dict: Optional[bool] = None,
+    ) -> Union[Tuple[torch.Tensor], SequenceClassifierOutputWithPast]:
+        r"""
+        labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
+            Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
+            config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
+            `config.num_labels > 1` a classification loss is computed (Cross-Entropy).
+        """
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        transformer_outputs = self.transformer(
+            input_ids,
+            past_key_values=past_key_values,
+            attention_mask=attention_mask,
+            inputs_embeds=inputs_embeds,
+            use_cache=use_cache,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        hidden_states = transformer_outputs[0]
+        logits = self.score(hidden_states)
+
+        if input_ids is not None:
+            batch_size = input_ids.shape[0]
+        else:
+            batch_size = inputs_embeds.shape[0]
+
+        if self.config.pad_token_id is None and batch_size != 1:
+            raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
+        if self.config.pad_token_id is None:
+            sequence_lengths = -1
+        else:
+            if input_ids is not None:
+                sequence_lengths = (torch.ne(input_ids, self.config.pad_token_id).sum(-1) - 1).to(logits.device)
+            else:
+                sequence_lengths = -1
+                logger.warning(
+                    f"{self.__class__.__name__} will not detect padding tokens in `inputs_embeds`. Results may be "
+                    "unexpected if using padding tokens in conjunction with `inputs_embeds.`"
+                )
+
+        pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
+
+        loss = None
+        if labels is not None:
+            if self.config.problem_type is None:
+                if self.num_labels == 1:
+                    self.config.problem_type = "regression"
+                elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
+                    self.config.problem_type = "single_label_classification"
+                else:
+                    self.config.problem_type = "multi_label_classification"
+
+            if self.config.problem_type == "regression":
+                loss_fct = MSELoss()
+                if self.num_labels == 1:
+                    loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
+                else:
+                    loss = loss_fct(pooled_logits, labels)
+            elif self.config.problem_type == "single_label_classification":
+                loss_fct = CrossEntropyLoss()
+                loss = loss_fct(pooled_logits, labels)
+            elif self.config.problem_type == "multi_label_classification":
+                loss_fct = BCEWithLogitsLoss()
+                loss = loss_fct(pooled_logits, labels)
+        if not return_dict:
+            output = (pooled_logits,) + transformer_outputs[1:]
+            return ((loss,) + output) if loss is not None else output
+
+        return SequenceClassifierOutputWithPast(
+            loss=loss,
+            logits=pooled_logits,
+            past_key_values=transformer_outputs.past_key_values,
+            hidden_states=transformer_outputs.hidden_states,
+            attentions=transformer_outputs.attentions,
+        )
+
+
+@add_start_docstrings(
+    """
+    MPT Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for
+    Named-Entity-Recognition (NER) tasks.
+    """,
+    MPT_START_DOCSTRING,
+)
+class MptForTokenClassification(MptPreTrainedModel):
+    def __init__(self, config: MptConfig):
+        super().__init__(config)
+        self.num_labels = config.num_labels
+
+        self.transformer = MptModel(config)
+        if hasattr(config, "classifier_dropout") and config.classifier_dropout is not None:
+            classifier_dropout = config.classifier_dropout
+        elif hasattr(config, "hidden_dropout") and config.hidden_dropout is not None:
+            classifier_dropout = config.hidden_dropout
+        else:
+            classifier_dropout = 0.1
+        self.dropout = nn.Dropout(classifier_dropout)
+        self.classifier = nn.Linear(config.hidden_size, config.num_labels)
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    @add_start_docstrings_to_model_forward(MPT_INPUTS_DOCSTRING)
+    @add_code_sample_docstrings(
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=TokenClassifierOutput,
+        config_class=_CONFIG_FOR_DOC,
+    )
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
+        attention_mask: Optional[torch.Tensor] = None,
+        inputs_embeds: Optional[torch.Tensor] = None,
+        labels: Optional[torch.Tensor] = None,
+        use_cache: Optional[bool] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        return_dict: Optional[bool] = None,
+        **deprecated_arguments,
+    ) -> Union[Tuple[torch.Tensor], TokenClassifierOutput]:
+        r"""
+        labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
+            Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
+            config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
+            `config.num_labels > 1` a classification loss is computed (Cross-Entropy).
+        """
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        transformer_outputs = self.transformer(
+            input_ids,
+            past_key_values=past_key_values,
+            attention_mask=attention_mask,
+            inputs_embeds=inputs_embeds,
+            use_cache=use_cache,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        hidden_states = transformer_outputs[0]
+        hidden_states = self.dropout(hidden_states)
+        logits = self.classifier(hidden_states)
+
+        loss = None
+        if labels is not None:
+            # move labels to correct device to enable model parallelism
+            labels = labels.to(logits.device)
+            batch_size, seq_length = labels.shape
+            loss_fct = CrossEntropyLoss()
+            loss = loss_fct(
+                logits.view(batch_size * seq_length, self.num_labels), labels.view(batch_size * seq_length)
+            )
+
+        if not return_dict:
+            output = (logits,) + transformer_outputs[2:]
+            return ((loss,) + output) if loss is not None else output
+
+        return TokenClassifierOutput(
+            loss=loss,
+            logits=logits,
+            hidden_states=transformer_outputs.hidden_states,
+            attentions=transformer_outputs.attentions,
+        )
+
+
+@add_start_docstrings(
+    """
+    The MPT Model transformer with a span classification head on top for extractive question-answering tasks like SQuAD
+    (a linear layers on top of the hidden-states output to compute `span start logits` and `span end logits`).
+    """,
+    MPT_START_DOCSTRING,
+)
+class MptForQuestionAnswering(MptPreTrainedModel):
+    def __init__(self, config):
+        super().__init__(config)
+        self.transformer = MptModel(config)
+        self.qa_outputs = nn.Linear(config.hidden_size, 2)
+
+        # Initialize weights and apply final processing
+        self.post_init()
+
+    @add_start_docstrings_to_model_forward(MPT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        attention_mask: Optional[torch.FloatTensor] = None,
+        inputs_embeds: Optional[torch.FloatTensor] = None,
+        start_positions: Optional[torch.LongTensor] = None,
+        end_positions: Optional[torch.LongTensor] = None,
+        output_attentions: Optional[bool] = None,
+        output_hidden_states: Optional[bool] = None,
+        return_dict: Optional[bool] = None,
+    ) -> Union[Tuple, QuestionAnsweringModelOutput]:
+        r"""
+        start_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
+            Labels for position (index) of the start of the labelled span for computing the token classification loss.
+            Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
+            are not taken into account for computing the loss.
+        end_positions (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
+            Labels for position (index) of the end of the labelled span for computing the token classification loss.
+            Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
+            are not taken into account for computing the loss.
+        """
+        return_dict = return_dict if return_dict is not None else self.config.use_return_dict
+
+        outputs = self.transformer(
+            input_ids,
+            attention_mask=attention_mask,
+            inputs_embeds=inputs_embeds,
+            output_attentions=output_attentions,
+            output_hidden_states=output_hidden_states,
+            return_dict=return_dict,
+        )
+
+        sequence_output = outputs[0]
+
+        logits = self.qa_outputs(sequence_output)
+        start_logits, end_logits = logits.split(1, dim=-1)
+        start_logits = start_logits.squeeze(-1).contiguous()
+        end_logits = end_logits.squeeze(-1).contiguous()
+
+        total_loss = None
+        if start_positions is not None and end_positions is not None:
+            # If we are on multi-GPU, split add a dimension
+            if len(start_positions.size()) > 1:
+                start_positions = start_positions.squeeze(-1)
+            if len(end_positions.size()) > 1:
+                end_positions = end_positions.squeeze(-1)
+            # sometimes the start/end positions are outside our model inputs, we ignore these terms
+            ignored_index = start_logits.size(1)
+            start_positions = start_positions.clamp(0, ignored_index)
+            end_positions = end_positions.clamp(0, ignored_index)
+
+            loss_fct = CrossEntropyLoss(ignore_index=ignored_index)
+            start_loss = loss_fct(start_logits, start_positions)
+            end_loss = loss_fct(end_logits, end_positions)
+            total_loss = (start_loss + end_loss) / 2
+
+        if not return_dict:
+            output = (start_logits, end_logits) + outputs[2:]
+            return ((total_loss,) + output) if total_loss is not None else output
+
+        return QuestionAnsweringModelOutput(
+            loss=total_loss,
+            start_logits=start_logits,
+            end_logits=end_logits,
+            hidden_states=outputs.hidden_states,
+            attentions=outputs.attentions,
+        )

src/transformers/utils/dummy_pt_objects.py

@@ -5101,6 +5101,51 @@ class MPNetPreTrainedModel(metaclass=DummyObject):
         requires_backends(self, ["torch"])
 
 
+MPT_PRETRAINED_MODEL_ARCHIVE_LIST = None
+
+
+class MptForCausalLM(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class MptForQuestionAnswering(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class MptForSequenceClassification(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class MptForTokenClassification(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class MptModel(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
+class MptPreTrainedModel(metaclass=DummyObject):
+    _backends = ["torch"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["torch"])
+
+
 MRA_PRETRAINED_MODEL_ARCHIVE_LIST = None
 
 

tests/models/mpt/test_modeling_mpt.py

+# coding=utf-8
+# Copyright 2023 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import math
+import unittest
+
+from transformers import MptConfig, is_torch_available
+from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device
+
+from ...generation.test_utils import GenerationTesterMixin
+from ...test_configuration_common import ConfigTester
+from ...test_modeling_common import ModelTesterMixin, ids_tensor, random_attention_mask
+from ...test_pipeline_mixin import PipelineTesterMixin
+
+
+if is_torch_available():
+    import torch
+
+    from transformers import (
+        MPT_PRETRAINED_MODEL_ARCHIVE_LIST,
+        AutoTokenizer,
+        MptForCausalLM,
+        MptForQuestionAnswering,
+        MptForSequenceClassification,
+        MptForTokenClassification,
+        MptModel,
+    )
+
+
+@require_torch
+class MptModelTester:
+    def __init__(
+        self,
+        parent,
+        batch_size=14,
+        seq_length=7,
+        is_training=True,
+        use_token_type_ids=False,
+        use_input_mask=True,
+        use_labels=True,
+        use_mc_token_ids=True,
+        vocab_size=99,
+        hidden_size=32,
+        num_hidden_layers=5,
+        num_attention_heads=4,
+        intermediate_size=37,
+        hidden_act="gelu",
+        hidden_dropout_prob=0.1,
+        attention_dropout_prob=0.1,
+        max_position_embeddings=512,
+        type_vocab_size=16,
+        type_sequence_label_size=2,
+        initializer_range=0.02,
+        num_labels=3,
+        num_choices=4,
+    ):
+        self.parent = parent
+        self.batch_size = batch_size
+        self.seq_length = seq_length
+        self.is_training = is_training
+        self.use_token_type_ids = use_token_type_ids
+        self.use_input_mask = use_input_mask
+        self.use_labels = use_labels
+        self.use_mc_token_ids = use_mc_token_ids
+        self.vocab_size = vocab_size
+        self.hidden_size = hidden_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.intermediate_size = intermediate_size
+        self.hidden_act = hidden_act
+        self.hidden_dropout_prob = hidden_dropout_prob
+        self.attention_dropout_prob = attention_dropout_prob
+        self.max_position_embeddings = max_position_embeddings
+        self.type_vocab_size = type_vocab_size
+        self.type_sequence_label_size = type_sequence_label_size
+        self.initializer_range = initializer_range
+        self.num_labels = num_labels
+        self.num_choices = num_choices
+        self.scope = None
+        self.bos_token_id = vocab_size - 1
+        self.eos_token_id = vocab_size - 1
+        self.pad_token_id = vocab_size - 1
+
+    def get_large_model_config(self):
+        return MptConfig.from_pretrained("mosaicml/mpt-7")
+
+    def prepare_config_and_inputs(self, gradient_checkpointing=False):
+        input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
+
+        input_mask = None
+        if self.use_input_mask:
+            input_mask = random_attention_mask([self.batch_size, self.seq_length])
+
+        sequence_labels = None
+        if self.use_labels:
+            sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size)
+
+        config = self.get_config(gradient_checkpointing=gradient_checkpointing)
+
+        return (config, input_ids, input_mask, sequence_labels)
+
+    def get_config(self, gradient_checkpointing=False):
+        return MptConfig(
+            vocab_size=self.vocab_size,
+            seq_length=self.seq_length,
+            hidden_size=self.hidden_size,
+            n_layers=self.num_hidden_layers,
+            n_heads=self.num_attention_heads,
+            hidden_dropout=self.hidden_dropout_prob,
+            attention_dropout=self.attention_dropout_prob,
+            n_positions=self.max_position_embeddings,
+            type_vocab_size=self.type_vocab_size,
+            initializer_range=self.initializer_range,
+            use_cache=True,
+            bos_token_id=self.bos_token_id,
+            eos_token_id=self.eos_token_id,
+            pad_token_id=self.pad_token_id,
+            num_labels=self.num_labels,
+            gradient_checkpointing=gradient_checkpointing,
+            dtype="float32",
+        )
+
+    def create_and_check_mpt_model(self, config, input_ids, input_mask, *args):
+        model = MptModel(config=config)
+        model.to(torch_device)
+        model.eval()
+
+        result = model(input_ids)
+
+        self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size))
+        self.parent.assertEqual(len(result.past_key_values), config.n_layers)
+
+    def create_and_check_mpt_model_past(self, config, input_ids, input_mask, *args):
+        model = MptModel(config=config)
+
+        model.to(torch_device)
+        model.eval()
+
+        # first forward pass
+        outputs = model(input_ids, attention_mask=torch.ones_like(input_ids), use_cache=True)
+        outputs_use_cache_conf = model(input_ids, attention_mask=torch.ones_like(input_ids))
+        outputs_no_past = model(input_ids, use_cache=False, attention_mask=torch.ones_like(input_ids))
+
+        self.parent.assertTrue(len(outputs) == len(outputs_use_cache_conf))
+        self.parent.assertTrue(len(outputs) == len(outputs_no_past) + 1)
+
+        past = outputs["past_key_values"]
+
+        # create hypothetical next token and extent to next_input_ids
+        next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size)
+
+        # append to next input_ids and token_type_ids
+        next_input_ids = torch.cat([input_ids, next_tokens], dim=-1)
+
+        output_from_no_past = model(next_input_ids)["last_hidden_state"]
+        output_from_past = model(next_tokens, past_key_values=past)["last_hidden_state"]
+
+        # select random slice
+        random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item()
+        output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx].detach()
+        output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach()
+
+        # test that outputs are equal for slice
+        self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3))
+
+    def create_and_check_mpt_model_attention_mask_past(self, config, input_ids, input_mask, *args):
+        model = MptModel(config=config)
+        model.to(torch_device)
+        model.eval()
+
+        # create attention mask
+        attn_mask = torch.ones(input_ids.shape, dtype=torch.long, device=torch_device)
+        half_seq_length = self.seq_length // 2
+        attn_mask[:, half_seq_length:] = 0
+
+        # first forward pass
+        output, past = model(input_ids, attention_mask=attn_mask).to_tuple()
+
+        # create hypothetical next token and extent to next_input_ids
+        next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size)
+
+        # change a random masked slice from input_ids
+        random_seq_idx_to_change = ids_tensor((1,), half_seq_length).item() + 1
+        random_other_next_tokens = ids_tensor((self.batch_size, 1), config.vocab_size).squeeze(-1)
+        input_ids[:, -random_seq_idx_to_change] = random_other_next_tokens
+
+        # append to next input_ids and attn_mask
+        next_input_ids = torch.cat([input_ids, next_tokens], dim=-1)
+        attn_mask = torch.cat(
+            [attn_mask, torch.ones((attn_mask.shape[0], 1), dtype=torch.long, device=torch_device)],
+            dim=1,
+        )
+
+        # get two different outputs
+        output_from_no_past = model(next_input_ids, attention_mask=attn_mask)["last_hidden_state"]
+        output_from_past = model(next_tokens, past_key_values=past, attention_mask=attn_mask)["last_hidden_state"]
+
+        # select random slice
+        random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item()
+        output_from_no_past_slice = output_from_no_past[:, -1, random_slice_idx].detach()
+        output_from_past_slice = output_from_past[:, 0, random_slice_idx].detach()
+
+        # test that outputs are equal for slice
+        self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3))
+
+    def create_and_check_mpt_model_past_large_inputs(self, config, input_ids, input_mask, *args):
+        model = MptModel(config=config)
+        model.to(torch_device)
+        model.eval()
+
+        # first forward pass
+        outputs = model(
+            input_ids,
+            attention_mask=input_mask,
+            use_cache=True,
+        )
+        past_key_values = outputs.past_key_values
+
+        # create hypothetical multiple next token and extent to next_input_ids
+        next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size)
+        next_mask = ids_tensor((self.batch_size, 3), vocab_size=2)
+
+        # append to next input_ids and
+        next_input_ids = torch.cat([input_ids, next_tokens], dim=-1)
+        next_attention_mask = torch.cat([input_mask, next_mask], dim=-1)
+
+        output_from_no_past = model(
+            next_input_ids,
+            attention_mask=next_attention_mask,
+            output_hidden_states=True,
+        )
+        hidden_states_from_no_past = output_from_no_past["hidden_states"][0]
+
+        output_from_past = model(
+            next_tokens,
+            attention_mask=next_attention_mask,
+            past_key_values=past_key_values,
+            output_hidden_states=True,
+        )
+        hidden_states_from_past = output_from_past["hidden_states"][0]
+
+        # select random slice
+        random_slice_idx = ids_tensor((1,), hidden_states_from_past.shape[-1]).item()
+        output_from_no_past_slice = hidden_states_from_no_past[:, -3:, random_slice_idx].detach()
+        output_from_past_slice = hidden_states_from_past[:, :, random_slice_idx].detach()
+
+        self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1])
+
+        # test that outputs are equal for slice
+        self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3))
+
+    def create_and_check_lm_head_model(self, config, input_ids, input_mask, *args):
+        model = MptForCausalLM(config)
+        model.to(torch_device)
+        model.eval()
+
+        result = model(input_ids, labels=input_ids)
+        self.parent.assertEqual(result.loss.shape, ())
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size))
+
+    def create_and_check_sequence_classification_model(self, config, input_ids, input_mask, *args):
+        config.num_labels = self.num_labels
+        model = MptForSequenceClassification(config)
+        model.to(torch_device)
+        model.eval()
+
+        result = model(input_ids, attention_mask=input_mask)
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels))
+
+    def create_and_check_token_classification_model(self, config, input_ids, input_mask, *args):
+        model = MptForTokenClassification(config)
+        model.to(torch_device)
+        model.eval()
+
+        result = model(input_ids, attention_mask=input_mask)
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels))
+
+    def create_and_check_question_answering_model(self, config, input_ids, input_mask, *args):
+        model = MptForQuestionAnswering(config)
+        model.to(torch_device)
+        model.eval()
+
+        result = model(input_ids, attention_mask=input_mask)
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels))
+
+    def create_and_check_forward_and_backwards(
+        self, config, input_ids, input_mask, *args, gradient_checkpointing=False
+    ):
+        model = MptForCausalLM(config)
+        model.to(torch_device)
+        if gradient_checkpointing:
+            model.gradient_checkpointing_enable()
+
+        result = model(input_ids, labels=input_ids)
+        self.parent.assertEqual(result.loss.shape, ())
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size))
+        result.loss.backward()
+
+    def create_and_check_mpt_weight_initialization(self, config, *args):
+        model = MptModel(config)
+        model_std = model.config.initializer_range / math.sqrt(2 * model.config.n_layers)
+        for key in model.state_dict().keys():
+            if "c_proj" in key and "weight" in key:
+                self.parent.assertLessEqual(abs(torch.std(model.state_dict()[key]) - model_std), 0.001)
+                self.parent.assertLessEqual(abs(torch.mean(model.state_dict()[key]) - 0.0), 0.01)
+
+    def prepare_config_and_inputs_for_common(self):
+        config_and_inputs = self.prepare_config_and_inputs()
+
+        config, input_ids, input_mask, sequence_labels = config_and_inputs
+
+        inputs_dict = {"input_ids": input_ids}
+
+        return config, inputs_dict
+
+
+@require_torch
+class MptModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin, unittest.TestCase):
+    all_model_classes = (
+        (
+            MptModel,
+            MptForCausalLM,
+            MptForSequenceClassification,
+            MptForTokenClassification,
+            MptForQuestionAnswering,
+        )
+        if is_torch_available()
+        else ()
+    )
+
+    all_generative_model_classes = (MptForCausalLM,) if is_torch_available() else ()
+    fx_compatible = False
+    test_missing_keys = False
+    test_pruning = False
+    test_torchscript = False
+    test_head_masking = False
+    pipeline_model_mapping = (
+        {"feature-extraction": MptModel, "text-generation": MptForCausalLM} if is_torch_available() else {}
+    )
+
+    def setUp(self):
+        self.model_tester = MptModelTester(self)
+        self.config_tester = ConfigTester(self, config_class=MptConfig, n_embd=37)
+
+    def test_config(self):
+        self.config_tester.run_common_tests()
+
+    def test_mpt_model(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_mpt_model(*config_and_inputs)
+
+    def test_mpt_model_past(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_mpt_model_past(*config_and_inputs)
+
+    def test_mpt_model_att_mask_past(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_mpt_model_attention_mask_past(*config_and_inputs)
+
+    def test_mpt_model_past_large_inputs(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_mpt_model_past_large_inputs(*config_and_inputs)
+
+    def test_mpt_lm_head_model(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_lm_head_model(*config_and_inputs)
+
+    def test_mpt_sequence_classification_model(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_sequence_classification_model(*config_and_inputs)
+
+    def test_mpt_token_classification_model(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_token_classification_model(*config_and_inputs)
+
+    def test_mpt_gradient_checkpointing(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_forward_and_backwards(*config_and_inputs, gradient_checkpointing=True)
+
+    def test_mpt_weight_initialization(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_mpt_weight_initialization(*config_and_inputs)
+
+    @unittest.skip("For backward compatibility the lm_head is not in the model's state dict on the Hub.")
+    def test_model_weights_reload_no_missing_tied_weights(self):
+        pass
+
+    @slow
+    def test_model_from_pretrained(self):
+        for model_name in MPT_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
+            model = MptModel.from_pretrained(model_name)
+            self.assertIsNotNone(model)
+
+
+@slow
+@require_torch_gpu
+class MptIntegrationTests(unittest.TestCase):
+    def test_generation_8k(self):
+        model_id = "mosaicml/mpt-7b-8k"
+        tokenizer = AutoTokenizer.from_pretrained(model_id)
+
+        # Load in 4bit to fit the daily CI runner GPU RAM
+        model = MptForCausalLM.from_pretrained(
+            model_id, torch_dtype=torch.bfloat16, device_map={"": 0}, load_in_4bit=True
+        )
+
+        input_text = "Hello"
+        expected_output = "Hello my name is [name] and I am a [type] at [company]. I have a [number]"
+
+        inputs = tokenizer(input_text, return_tensors="pt")
+        outputs = model.generate(**inputs, max_new_tokens=20)
+
+        decoded_output = tokenizer.decode(outputs[0], skip_special_tokens=True)
+        self.assertEqual(decoded_output, expected_output)
+
+    def test_generation(self):
+        model_id = "mosaicml/mpt-7b"
+        tokenizer = AutoTokenizer.from_pretrained(model_id)
+
+        # Load in 4bit to fit the daily CI runner GPU RAM
+        model = MptForCausalLM.from_pretrained(
+            model_id, torch_dtype=torch.bfloat16, device_map={"": 0}, load_in_4bit=True
+        )
+
+        input_text = "Hello"
+        expected_output = "Hello my name is Kaitlyn and I am a senior at the University of Wisconsin-Stout. I am major"
+
+        inputs = tokenizer(input_text, return_tensors="pt")
+        outputs = model.generate(**inputs, max_new_tokens=20)
+
+        decoded_output = tokenizer.decode(outputs[0], skip_special_tokens=True)
+        self.assertEqual(decoded_output, expected_output)
+
+    def test_generation_batched(self):
+        model_id = "mosaicml/mpt-7b"
+        tokenizer = AutoTokenizer.from_pretrained(model_id)
+
+        # Load in 4bit to fit the daily CI runner GPU RAM
+        model = MptForCausalLM.from_pretrained(
+            model_id, torch_dtype=torch.bfloat16, device_map={"": 0}, load_in_4bit=True
+        )
+
+        input_texts = ["Hello my name is", "Today I am going at the gym and"]
+        tokenizer.pad_token_id = tokenizer.eos_token_id
+        tokenizer.padding_side = "left"
+
+        inputs = tokenizer(input_texts, return_tensors="pt", padding=True).to(torch_device)
+
+        expected_output = [
+            "Hello my name is Tiffany and I am a mother of two beautiful children. I have been a nanny for over",
+            "Today I am going at the gym and then I am going to go to the grocery store. I am going to get some food and then",
+        ]
+        outputs = model.generate(**inputs, max_new_tokens=20)
+
+        decoded_outputs = tokenizer.batch_decode(outputs, skip_special_tokens=True)
+        for i, predicted_output in enumerate(decoded_outputs):
+            self.assertEqual(predicted_output, expected_output[i])
+
+    def test_model_logits(self):
+        model_id = "mosaicml/mpt-7b"
+
+        # Load in 4bit to fit the daily CI runner GPU RAM
+        model = MptForCausalLM.from_pretrained(
+            model_id, torch_dtype=torch.bfloat16, device_map={"": 0}, load_in_4bit=True
+        )
+
+        dummy_input = torch.LongTensor([[1, 2, 3, 4, 5]]).to(torch_device)
+
+        outputs = model(dummy_input, output_hidden_states=True)
+
+        expected_slice = torch.Tensor([-0.2559, -0.2197, -0.2480]).to(torch_device, torch.bfloat16)
+        predicted_slice = outputs.hidden_states[-1][0, 0, :3]
+
+        self.assertTrue(torch.allclose(expected_slice, predicted_slice, atol=1e-3, rtol=1e-3))

utils/check_config_attributes.py

@@ -98,6 +98,9 @@ SPECIAL_CASES_TO_ALLOW.update(
         "LayoutLMv2Config": True,
         "MaskFormerSwinConfig": True,
         "MT5Config": True,
+        # For backward compatibility with trust remote code models
+        "MptConfig": True,
+        "MptAttentionConfig": True,
         "NatConfig": True,
         "OneFormerConfig": True,
         "PerceiverConfig": True,