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update rope_max_timescale to 1M for qwen3-30b-a3b-base to match HF #4039

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copybara-service merged 3 commits into from
Jun 17, 2026
+40 −2
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update rope_max_timescale to 1M for qwen3-30b-a3b-base to match HF #4039

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4720c3e
fix: set rope_max_timescale to 1M for qwen3-30b-a3b-base and update H…
JamesDeng42 Jun 16, 2026
7f5db1a
minor fix
JamesDeng42 Jun 16, 2026
b617934
minor comments
JamesDeng42 Jun 16, 2026
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40 changes: 39 additions & 1 deletion src/maxtext/checkpoint_conversion/utils/hf_model_configs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -718,6 +718,44 @@
vocab_size=151936,
)

# Matches Qwen/Qwen3-30B-A3B-Base
qwen3_30b_a3b_base_config = transformers.Qwen3MoeConfig(
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architectures=["Qwen3MoeForCausalLM"],
attention_bias=False,
attention_dropout=0.0,
bos_token_id=151643,
decoder_sparse_step=1,
eos_token_id=151643,
head_dim=128,
hidden_act="silu",
hidden_size=2048,
initializer_range=0.02,
intermediate_size=6144,
max_position_embeddings=32768,
max_window_layers=48,
mlp_only_layers=[],
model_type="qwen3_moe",
moe_intermediate_size=768,
norm_topk_prob=True,
num_attention_heads=32,
num_experts=128,
num_experts_per_tok=8,
num_hidden_layers=48,
num_key_value_heads=4,
output_router_logits=False,
rms_norm_eps=1e-06,
rope_scaling=None,
rope_theta=1000000,
router_aux_loss_coef=0.001,
sliding_window=None,
tie_word_embeddings=False,
torch_dtype="bfloat16",
transformers_version="4.51.0",
use_cache=True,
use_sliding_window=False,
vocab_size=151936,
)

qwen3_235b_a22b_thinking_2507_config = transformers.Qwen3MoeConfig(
architectures=["Qwen3MoeForCausalLM"],
attention_bias=False,
Expand Down Expand Up @@ -1579,7 +1617,7 @@ def __init__(self, **kwargs):
"llama3.1-70b": llama31_70b_config,
"llama3.1-405b": llama31_405b_config,
"qwen3-30b-a3b": qwen3_30b_a3b_thinking_2507_config,
"qwen3-30b-a3b-base": qwen3_30b_a3b_thinking_2507_config,
"qwen3-30b-a3b-base": qwen3_30b_a3b_base_config,
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"qwen3-235b-a22b": qwen3_235b_a22b_thinking_2507_config,
"qwen3-480b-a35b": qwen3_coder_480b_a35b_config,
"deepseek2-16b": deepseek2_16b_config,
Expand Down
2 changes: 1 addition & 1 deletion src/maxtext/configs/models/qwen3-30b-a3b-base.yml
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Expand Up @@ -34,7 +34,7 @@ base_moe_mlp_dim: 768
norm_topk_prob: true

# RoPE Settings
rope_max_timescale: 10_000_000
rope_max_timescale: 1_000_000

# General Model Settings
enable_dropout: false
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