[Bugfix][Model] Refactor OLMo model to support new HF format in transformers 4.40.0 (#4324)

Co-authored-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>

README.md

@@ -74,7 +74,7 @@ vLLM seamlessly supports many Hugging Face models, including the following archi
 - Mistral (`mistralai/Mistral-7B-v0.1`, `mistralai/Mistral-7B-Instruct-v0.1`, etc.)
 - Mixtral (`mistralai/Mixtral-8x7B-v0.1`, `mistralai/Mixtral-8x7B-Instruct-v0.1`, `mistral-community/Mixtral-8x22B-v0.1`, etc.)
 - MPT (`mosaicml/mpt-7b`, `mosaicml/mpt-30b`, etc.)
-- OLMo (`allenai/OLMo-1B`, `allenai/OLMo-7B`, etc.)
+- OLMo (`allenai/OLMo-1B-hf`, `allenai/OLMo-7B-hf`, etc.)
 - OPT (`facebook/opt-66b`, `facebook/opt-iml-max-30b`, etc.)
 - Orion (`OrionStarAI/Orion-14B-Base`, `OrionStarAI/Orion-14B-Chat`, etc.)
 - Phi (`microsoft/phi-1_5`, `microsoft/phi-2`, etc.)

docs/source/models/supported_models.rst

@@ -101,7 +101,7 @@ Alongside each architecture, we include some popular models that use it.
     -
   * - :code:`OLMoForCausalLM`
     - OLMo
-    - :code:`allenai/OLMo-1B`, :code:`allenai/OLMo-7B`, etc.
+    - :code:`allenai/OLMo-1B-hf`, :code:`allenai/OLMo-7B-hf`, etc.
     -
   * - :code:`OPTForCausalLM`
     - OPT, OPT-IML

requirements-dev.txt

@@ -26,7 +26,6 @@ requests
 ray
 peft
 awscli
-ai2-olmo # required for OLMo
 
 # Benchmarking
 aiohttp

vllm/model_executor/models/__init__.py

@@ -42,7 +42,7 @@ _MODELS = {
     "MptForCausalLM": ("mpt", "MPTForCausalLM"),
     "MPTForCausalLM": ("mpt", "MPTForCausalLM"),
     "MiniCPMForCausalLM": ("minicpm", "MiniCPMForCausalLM"),
-    "OLMoForCausalLM": ("olmo", "OLMoForCausalLM"),
+    "OlmoForCausalLM": ("olmo", "OlmoForCausalLM"),
     "OPTForCausalLM": ("opt", "OPTForCausalLM"),
     "OrionForCausalLM": ("orion", "OrionForCausalLM"),
     "PhiForCausalLM": ("phi", "PhiForCausalLM"),

vllm/model_executor/models/olmo.py

 # coding=utf-8
 # Adapted from
-# https://github.com/allenai/OLMo/blob/v0.2.4/olmo/model.py and
-# https://github.com/allenai/OLMo/blob/v0.2.4/hf_olmo/modeling_olmo.py
-# Copyright 2023 The vLLM team.
-# Copyright (c) Microsoft Corporation.
-# Licensed under the MIT license.
+# https://github.com/huggingface/transformers/blob/v4.40.1/src/transformers/models/olmo/modeling_olmo.py
+# Copyright 2024 The vLLM team.
+# Copyright 2024 EleutherAI and the HuggingFace Inc. team. All rights reserved.
 #
-# BSD 3-Clause License
+# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
+# and OPT implementations in this library. It has been modified from its
+# original forms to accommodate minor architectural differences compared
+# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
 #
-# Copyright (c) 2022, Tri Dao, trid@cs.stanford.edu.
-# 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
 #
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
-# * Redistributions of source code must retain the above copyright notice, this
-#   list of conditions and the following disclaimer.
-#
-# * Redistributions in binary form must reproduce the above copyright notice,
-#   this list of conditions and the following disclaimer in the documentation
-#   and/or other materials provided with the distribution.
-#
-# * Neither the name of the copyright holder nor the names of its
-#   contributors may be used to endorse or promote products derived from
-#   this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# 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.
 """Inference-only OLMo model compatible with HuggingFace weights."""
 from typing import Iterable, List, Optional, Tuple
 
 import torch
-# this model must need this dependency
-from hf_olmo import OLMoConfig
 from torch import nn
+from transformers import OlmoConfig
 
 from vllm.attention import Attention, AttentionMetadata
 from vllm.distributed import get_tensor_model_parallel_world_size
 from vllm.model_executor.layers.activation import SiluAndMul
-from vllm.model_executor.layers.linear import (ColumnParallelLinear,
-                                               LinearMethodBase,
+from vllm.model_executor.layers.linear import (LinearMethodBase,
                                                MergedColumnParallelLinear,
                                                QKVParallelLinear,
                                                RowParallelLinear)
@@ -55,7 +38,7 @@ from vllm.model_executor.layers.logits_processor import LogitsProcessor
 from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.model_executor.layers.sampler import Sampler
 from vllm.model_executor.layers.vocab_parallel_embedding import (
-    VocabParallelEmbedding)
+    ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
 from vllm.model_executor.sampling_metadata import SamplingMetadata
 from vllm.sequence import SamplerOutput
@@ -70,44 +53,41 @@ class OlmoAttention(nn.Module):
 
     def __init__(
         self,
-        config: OLMoConfig,
+        config: OlmoConfig,
         linear_method: Optional[LinearMethodBase] = None,
     ):
         super().__init__()
         self.config = config
-        self.hidden_size = config.d_model
-        assert config.d_model % config.n_heads == 0
+        self.hidden_size = config.hidden_size
         tensor_model_parallel_world_size = (
             get_tensor_model_parallel_world_size())
-        self.total_num_heads = self.config.n_heads
+        self.total_num_heads = config.num_attention_heads
+
+        assert self.hidden_size % self.total_num_heads == 0
         assert self.total_num_heads % tensor_model_parallel_world_size == 0
+
         self.num_heads = (self.total_num_heads //
                           tensor_model_parallel_world_size)
         self.head_dim = self.hidden_size // self.total_num_heads
+        self.max_position_embeddings = config.max_position_embeddings
+        self.rope_theta = config.rope_theta
+        self.clip_qkv = config.clip_qkv
 
-        # Layer norms.
-        self.attn_norm = nn.LayerNorm(config.d_model,
-                                      elementwise_affine=False,
-                                      bias=False)
         # Attention input projection. Projects x -> (q, k, v)
-        self.att_proj = QKVParallelLinear(
-            config.d_model,
+        self.qkv_proj = QKVParallelLinear(
+            self.hidden_size,
             self.head_dim,
             self.total_num_heads,
-            bias=config.include_bias,
+            bias=config.attention_bias,
             linear_method=linear_method,
         )
 
         # Rotary embeddings.
-        if self.config.rope:
-            rope_theta = getattr(config, "rope_theta", 10000)
-            max_position_embeddings = getattr(config,
-                                              "max_position_embeddings", 8192)
         self.rotary_emb = get_rope(
             self.head_dim,
             rotary_dim=self.head_dim,
-                max_position=max_position_embeddings,
-                base=rope_theta,
+            max_position=self.max_position_embeddings,
+            base=self.rope_theta,
         )
         self.scaling = self.head_dim**-0.5
         self.attn = Attention(self.num_heads,
@@ -115,10 +95,10 @@ class OlmoAttention(nn.Module):
                               scale=self.scaling)
 
         # Attention output projection.
-        self.attn_out = RowParallelLinear(
-            config.d_model,
-            config.d_model,
-            bias=config.include_bias,
+        self.o_proj = RowParallelLinear(
+            self.hidden_size,
+            self.hidden_size,
+            bias=config.attention_bias,
             linear_method=linear_method,
         )
 
@@ -129,13 +109,13 @@ class OlmoAttention(nn.Module):
         kv_cache: torch.Tensor,
         attn_metadata: AttentionMetadata,
     ) -> torch.Tensor:
-        hidden_states = self.attn_norm(hidden_states)
-        qkv, _ = self.att_proj(hidden_states)
+        qkv, _ = self.qkv_proj(hidden_states)
+        if self.clip_qkv is not None:
+            qkv.clamp_(min=-self.clip_qkv, max=self.clip_qkv)
         q, k, v = qkv.chunk(chunks=3, dim=-1)
-        if self.config.rope:
         q, k = self.rotary_emb(positions, q, k)
         attn_output = self.attn(q, k, v, kv_cache, attn_metadata)
-        output, _ = self.attn_out(attn_output)
+        output, _ = self.o_proj(attn_output)
         return output
 
 
@@ -148,37 +128,30 @@ class OlmoMLP(nn.Module):
 
     def __init__(
         self,
-        config: OLMoConfig,
+        config: OlmoConfig,
         linear_method: Optional[LinearMethodBase] = None,
     ):
         super().__init__()
         self.config = config
-        self.hidden_size = (config.mlp_hidden_size if config.mlp_hidden_size
-                            is not None else config.mlp_ratio * config.d_model)
-
-        # Layer norms.
-        self.ff_norm = nn.LayerNorm(config.d_model,
-                                    elementwise_affine=False,
-                                    bias=False)
+        self.hidden_size = config.hidden_size
+        self.intermediate_size = config.intermediate_size
 
         # Feed-forward input projection.
-        self.ff_proj = MergedColumnParallelLinear(
-            config.d_model,
-            [self.hidden_size // 2] * 2,
-            bias=config.include_bias,
+        self.gate_up_proj = MergedColumnParallelLinear(
+            self.hidden_size,
+            [self.intermediate_size] * 2,
+            bias=False,
             linear_method=linear_method,
         )
 
         # Activation function.
-        self.act = SiluAndMul()
-        self.act.output_multiplier = 0.5
-        assert (self.act.output_multiplier * self.hidden_size) % 1 == 0
+        self.act_fn = SiluAndMul()
 
         # Feed-forward output projection.
-        self.ff_out = RowParallelLinear(
-            int(self.act.output_multiplier * self.hidden_size),
-            config.d_model,
-            bias=config.include_bias,
+        self.down_proj = RowParallelLinear(
+            self.intermediate_size,
+            self.hidden_size,
+            bias=False,
             linear_method=linear_method,
         )
 
@@ -186,19 +159,13 @@ class OlmoMLP(nn.Module):
         self,
         x: torch.Tensor,
     ) -> torch.Tensor:
-        # Add feed-forward projection.
-        # shape: (batch_size, seq_len, d_model)
-        og_x = x
-        x = self.ff_norm(x)
-        x, _ = self.ff_proj(x)
-        x = self.act(x)
-        x, _ = self.ff_out(x)
-        x = og_x + x
-
+        gate_up, _ = self.gate_up_proj(x)
+        x = self.act_fn(gate_up)
+        x, _ = self.down_proj(x)
         return x
 
 
-class OlmoBlock(nn.Module):
+class OlmoDecoderLayer(nn.Module):
     """
     This is a typical transformer block where the output is
     computed as ``MLP(LN(x + Attention(LN(x))))``
@@ -206,15 +173,23 @@ class OlmoBlock(nn.Module):
     """
 
     def __init__(self,
-                 config: OLMoConfig,
+                 config: OlmoConfig,
                  linear_method: Optional[LinearMethodBase] = None):
         super().__init__()
         # Attention block.
-        self.attn = OlmoAttention(config, linear_method)
+        self.self_attn = OlmoAttention(config, linear_method)
 
         # MLP block.
         self.mlp = OlmoMLP(config, linear_method)
 
+        # LayerNorm
+        self.input_layernorm = nn.LayerNorm(config.hidden_size,
+                                            elementwise_affine=False,
+                                            bias=False)
+        self.post_attention_layernorm = nn.LayerNorm(config.hidden_size,
+                                                     elementwise_affine=False,
+                                                     bias=False)
+
     def forward(
         self,
         positions: torch.Tensor,
@@ -223,52 +198,37 @@ class OlmoBlock(nn.Module):
         attn_metadata: AttentionMetadata,
     ) -> Tuple[torch.Tensor, Optional[Tuple[torch.Tensor, torch.Tensor]]]:
         # Attention block.
-        og_x = hidden_states
-        x = self.attn(positions, hidden_states, kv_cache, attn_metadata)
-        x = x + og_x
+        residual = hidden_states
+        hidden_states = self.input_layernorm(hidden_states)
+        hidden_states = self.self_attn(positions, hidden_states, kv_cache,
+                                       attn_metadata)
+        hidden_states = hidden_states + residual
 
         # MLP block.
-        hidden_states = self.mlp(x)
+        residual = hidden_states
+        hidden_states = self.post_attention_layernorm(hidden_states)
+        hidden_states = self.mlp(hidden_states)
+        hidden_states = residual + hidden_states
         return hidden_states
 
 
 class OlmoModel(nn.Module):
 
     def __init__(self,
-                 config: OLMoConfig,
+                 config: OlmoConfig,
                  linear_method: Optional[LinearMethodBase] = None):
         super().__init__()
         self.config = config
 
-        self.transformer = nn.ModuleDict(
-            dict(
-                wte=VocabParallelEmbedding(
-                    config.embedding_size or config.vocab_size,
-                    config.d_model,
-                ),
-                ln_f=nn.LayerNorm(config.d_model,
+        self.embed_tokens = VocabParallelEmbedding(config.vocab_size,
+                                                   config.hidden_size)
+        self.layers = nn.ModuleList([
+            OlmoDecoderLayer(config, linear_method)
+            for layer_idx in range(config.num_hidden_layers)
+        ])
+        self.norm = nn.LayerNorm(config.hidden_size,
                                  elementwise_affine=False,
-                                  bias=False),
-            ))
-
-        blocks = [
-            OlmoBlock(config, linear_method) for i in range(config.n_layers)
-        ]
-        if self.config.block_group_size > 1:
-            raise NotImplementedError("Block group size > 1 not supported yet")
-        else:
-            self.transformer.update({"blocks": nn.ModuleList(blocks)})
-
-        if not config.weight_tying:
-            self.transformer.update({
-                "ff_out":
-                ColumnParallelLinear(
-                    config.d_model,
-                    config.embedding_size or config.vocab_size,
-                    bias=config.include_bias,
-                    linear_method=linear_method,
-                )
-            })
+                                 bias=False)
 
     def forward(
         self,
@@ -282,39 +242,49 @@ class OlmoModel(nn.Module):
         """
         # Get embeddings of input.
         # shape: (batch_size, seq_len, d_model)
-        x = self.transformer.wte(input_ids)  # type: ignore
+        inputs_embeds = self.embed_tokens(input_ids)
+
+        # embed positions
+        hidden_states = inputs_embeds
 
         # Apply blocks one-by-one.
-        for block_idx, block in enumerate(self.transformer.blocks):
+        for layer_idx, decoder_layer in enumerate(self.layers):
             # shape: (batch_size, seq_len, d_model)
-            x = block(
+            hidden_states = decoder_layer(
                 positions,
-                x,
-                kv_caches[block_idx],
+                hidden_states,
+                kv_caches[layer_idx],
                 attn_metadata,
             )
 
         # Apply final layer norm.
         # shape: (batch_size, seq_len or 1, d_model)
-        x = self.transformer.ln_f(x)  # type: ignore
-        return x
+        hidden_states = self.norm(hidden_states)
+        return hidden_states
 
 
-class OLMoForCausalLM(nn.Module):
+class OlmoForCausalLM(nn.Module):
     """
     Extremely barebones HF model wrapper.
     """
 
     def __init__(self,
-                 config: OLMoConfig,
+                 config: OlmoConfig,
                  linear_method: Optional[LinearMethodBase] = None):
         super().__init__()
         self.config = config
         self.linear_method = linear_method
         self.model = OlmoModel(config, linear_method)
-        self.lm_head_weight = (self.model.transformer.wte.weight
-                               if config.weight_tying else
-                               self.model.transformer.ff_out.weight)
+        if config.tie_word_embeddings:
+            self.lm_head_weight = self.model.embed_tokens.weight
+        else:
+            self.unpadded_vocab_size = config.vocab_size
+            self.lm_head = ParallelLMHead(
+                self.unpadded_vocab_size,
+                config.hidden_size,
+                org_num_embeddings=config.vocab_size,
+            )
+            self.lm_head_weight = self.lm_head.weight
         self.logits_processor = LogitsProcessor(config.vocab_size)
         self.sampler = Sampler()
 
@@ -348,19 +318,38 @@ class OLMoForCausalLM(nn.Module):
         return next_tokens
 
     def load_weights(self, weights: Iterable[Tuple[str, torch.Tensor]]):
+        stacked_params_mapping = [
+            # (param_name, shard_name, shard_id)
+            ("qkv_proj", "q_proj", "q"),
+            ("qkv_proj", "k_proj", "k"),
+            ("qkv_proj", "v_proj", "v"),
+            ("gate_up_proj", "gate_proj", 0),
+            ("gate_up_proj", "up_proj", 1),
+        ]
         params_dict = dict(self.named_parameters(remove_duplicate=False))
         for name, loaded_weight in weights:
-            # attention
-            if ".att" in name:
-                name = name.replace(".att", ".attn.att")
-            # mlp
-            if ".ff_proj" in name:
-                name = name.replace(".ff_proj", ".mlp.ff_proj")
-                # Reverse the weight for the MergeColumnParallelLinear
-                loaded_weight = torch.concat(loaded_weight.chunk(2)[::-1])
-            if ".ff_out" in name and "transformer.ff_out" not in name:
-                name = name.replace(".ff_out", ".mlp.ff_out")
-            # there is no bias in olmo
+            if "rotary_emb.inv_freq" in name:
+                continue
+            if ("rotary_emb.cos_cached" in name
+                    or "rotary_emb.sin_cached" in name):
+                # Models trained using ColossalAI may include these tensors in
+                # the checkpoint. Skip them.
+                continue
+            for (param_name, weight_name, shard_id) in stacked_params_mapping:
+                if weight_name not in name:
+                    continue
+                name = name.replace(weight_name, param_name)
+                # Skip loading extra bias for GPTQ models.
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
+                param = params_dict[name]
+                weight_loader = param.weight_loader
+                weight_loader(param, loaded_weight, shard_id)
+                break
+            else:
+                # Skip loading extra bias for GPTQ models.
+                if name.endswith(".bias") and name not in params_dict:
+                    continue
                 param = params_dict[name]
                 weight_loader = getattr(param, "weight_loader",
                                         default_weight_loader)