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Add Gemma3-270M model configuration support #500 #501

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Add Gemma3-270M model configuration support #500 #501

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4 changes: 4 additions & 0 deletions tests/cli/utils/model_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,10 @@
testcase_name="gemma3-1b",
model_name="gemma3-1b",
),
dict(
testcase_name="gemma3-270m",
model_name="gemma3-270m",
),
dict(
testcase_name="llama3.2-1b",
model_name="llama3.2-1b",
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20 changes: 20 additions & 0 deletions tunix/models/gemma3/model.py
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Expand Up @@ -108,6 +108,26 @@ class ModelConfig:
remat_config: RematConfig = RematConfig.NONE
param_dtype: jnp.dtype = jnp.bfloat16

@classmethod
def gemma3_270m(
cls,
sharding_config: ShardingConfig = ShardingConfig.get_default_sharding(),
) -> 'ModelConfig':
"""Gemma3-270M text-only config."""
return cls(
num_layers=18,
num_embed=262144,
embed_dim=640,
hidden_dim=2048,
num_heads=4,
head_dim=256,
num_kv_heads=1,
sliding_window_size=512,
local_base_frequency=10_000,
global_base_frequency=1_000_000,
shd_config=sharding_config,
)

@classmethod
def gemma3_1b(
cls,
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2 changes: 2 additions & 0 deletions tunix/models/gemma3/params.py
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Expand Up @@ -32,11 +32,13 @@


# Pretrained
GEMMA3_270M_PT = 'gs://gemma-data/checkpoints/gemma3-270m-pt'
GEMMA3_1B_PT = 'gs://gemma-data/checkpoints/gemma3-1b-pt'
GEMMA3_4B_PT = 'gs://gemma-data/checkpoints/gemma3-4b-pt'
GEMMA3_12B_PT = 'gs://gemma-data/checkpoints/gemma3-12b-pt'
GEMMA3_27B_PT = 'gs://gemma-data/checkpoints/gemma3-27b-pt'
# Instruction Tuned
GEMMA3_270M_IT = 'gs://gemma-data/checkpoints/gemma3-270m-it'
GEMMA3_1B_IT = 'gs://gemma-data/checkpoints/gemma3-1b-it'
GEMMA3_4B_IT = 'gs://gemma-data/checkpoints/gemma3-4b-it'
GEMMA3_12B_IT = 'gs://gemma-data/checkpoints/gemma3-12b-it'
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