[model] feat: support gpt-oss

veomni/models/transformers/gpt_oss/__init__.py

@@ -0,0 +1,20 @@
+import transformers
+from transformers import (
+    AutoConfig,
+    AutoModel,
+    AutoModelForCausalLM,
+)
+
+from .configuration_gpt_oss import GptOssConfig
+from .modeling_gpt_oss import (
+    GptOssForCausalLM,
+    GptOssModel,
+)
+
+
+if transformers.__version__ < "4.55.0":
+    AutoConfig.register("gpt_oss", GptOssConfig)
+    AutoModel.register(GptOssConfig, GptOssModel)
+    AutoModelForCausalLM.register(GptOssConfig, GptOssForCausalLM)
+
+__all__ = ["GptOssConfig", "GptOssModel", "GptOssForCausalLM"]

veomni/models/transformers/gpt_oss/configuration_gpt_oss.py

@@ -0,0 +1,119 @@
+# Copyright 2025 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.
+"""openai model configuration"""
+
+from transformers.configuration_utils import PretrainedConfig, layer_type_validation
+from transformers.modeling_rope_utils import rope_config_validation
+
+
+class GptOssConfig(PretrainedConfig):
+    r"""
+    This will yield a configuration to that of the BERT
+    [google-bert/bert-base-uncased](https://huggingface.co/google-bert/bert-base-uncased) architecture.
+
+    """
+
+    model_type = "gpt_oss"
+    base_model_pp_plan = {
+        "embed_tokens": (["input_ids"], ["inputs_embeds"]),
+        "layers": (["hidden_states", "attention_mask"], ["hidden_states"]),
+        "norm": (["hidden_states"], ["hidden_states"]),
+    }
+    base_model_tp_plan = {
+        "layers.*.self_attn.q_proj": "colwise",
+        "layers.*.self_attn.k_proj": "colwise",
+        "layers.*.self_attn.v_proj": "colwise",
+        "layers.*.self_attn.o_proj": "rowwise",
+        "layers.*.self_attn.sinks": "local_rowwise",
+        "layers.*.mlp.experts": "gather",
+        "layers.*.mlp.router": "ep_router",
+        "layers.*.mlp.experts.gate_up_proj": "grouped_gemm",
+        "layers.*.mlp.experts.gate_up_proj_bias": "grouped_gemm",
+        "layers.*.mlp.experts.down_proj": "grouped_gemm",
+        "layers.*.mlp.experts.down_proj_bias": "grouped_gemm",
+    }
+
+    def __init__(
+        self,
+        num_hidden_layers: int = 36,
+        num_local_experts: int = 128,
+        vocab_size: int = 201088,
+        hidden_size: int = 2880,
+        intermediate_size: int = 2880,
+        head_dim: int = 64,
+        num_attention_heads: int = 64,
+        num_key_value_heads: int = 8,
+        sliding_window: int = 128,
+        rope_theta: float = 150000.0,
+        tie_word_embeddings=False,
+        hidden_act: str = "silu",
+        initializer_range: float = 0.02,
+        max_position_embeddings=131072,
+        rms_norm_eps: float = 1e-5,
+        rope_scaling={"rope_type": "yarn", "factor": 32.0, "beta_fast": 32.0, "beta_slow": 1.0, "truncate": False},
+        attention_dropout: float = 0.0,
+        num_experts_per_tok=4,
+        router_aux_loss_coef: float = 0.9,
+        output_router_logits=False,
+        use_cache=True,
+        layer_types=None,
+        _moe_implementation="eager",
+        **kwargs,
+    ):
+        self.vocab_size = vocab_size
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.num_local_experts = num_local_experts
+        self.sliding_window = sliding_window
+        self.num_experts_per_tok = num_experts_per_tok
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.rope_theta = rope_theta
+        self.rope_scaling = rope_scaling
+        self.attention_dropout = attention_dropout
+        self.head_dim = head_dim if head_dim is not None else self.hidden_size // self.num_attention_heads
+        self.layer_types = layer_types
+        if self.layer_types is None:
+            self.layer_types = [
+                "sliding_attention" if bool((i + 1) % 2) else "full_attention" for i in range(self.num_hidden_layers)
+            ]
+        layer_type_validation(self.layer_types)
+
+        # Validate the correctness of rotary position embeddings parameters
+        # BC: if there is a 'type' field, copy it it to 'rope_type'.
+        if self.rope_scaling is not None and "type" in self.rope_scaling:
+            self.rope_scaling["rope_type"] = self.rope_scaling["type"]
+        rope_config_validation(self)
+
+        self.attention_bias = True
+        self.max_position_embeddings = max_position_embeddings
+        self.router_aux_loss_coef = router_aux_loss_coef
+        self.output_router_logits = output_router_logits
+        self.use_cache = use_cache
+        self._moe_implementation = _moe_implementation
+        super().__init__(
+            tie_word_embeddings=tie_word_embeddings,
+            **kwargs,
+        )
+
+
+__all__ = ["GptOssConfig"]