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fix

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wangbluo 2025-05-08 16:22:08 +08:00
parent 06724492ca
commit e78c4560c6
1 changed files with 3 additions and 1 deletions
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colossalai/shardformer/policies/command.py
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@ -38,6 +38,7 @@ class CommandPolicy(Policy):
def module_policy(self) -> Dict[Union[str, nn.Module], ModulePolicyDescription]:
from transformers.models.cohere.modeling_cohere import CohereAttention, CohereDecoderLayer, CohereModel
# The eager, flash_attention_2, sdpa will all be passed to CohereAttention in v4.51.3 transformers.
ATTN_IMPLEMENTATION = {
"eager": CohereAttention,
"flash_attention_2": CohereAttention,
@ -53,10 +54,11 @@ class CommandPolicy(Policy):
if self.tie_weight:
embedding_cls = PaddingEmbedding
# CohereLayerNorm has no bias in v4.51.3 transformers, so we don't replace it.
sp_mode = self.shard_config.sequence_parallelism_mode or None
sp_size = self.shard_config.sequence_parallel_size or None
sp_group = self.shard_config.sequence_parallel_process_group or None
sp_mode in ["split_gather", "ring"]
if sp_mode == "ring_attn" and not self.is_causal:
raise ValueError("Ring attention is only meant for causal language modeling.")