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Make OPT policy backward compatible with pre-OPT transformers versions #2254

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merged 1 commit into from
Aug 23, 2022
Merged

Make OPT policy backward compatible with pre-OPT transformers versions #2254

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7 changes: 3 additions & 4 deletions deepspeed/module_inject/replace_policy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -444,13 +444,12 @@ def __init__(self, client_module, inference=True):
try:
import transformers
HFOPTLayerPolicy._orig_layer_class = transformers.models.opt.modeling_opt.OPTDecoderLayer
if isinstance(DSPolicy.hf_model_config,
transformers.models.opt.configuration_opt.OPTConfig):
self.pre_attn_norm = self.hf_model_config.do_layer_norm_before
except:
HFOPTLayerPolicy._orig_layer_class = None

if isinstance(DSPolicy.hf_model_config,
transformers.models.opt.configuration_opt.OPTConfig):
self.pre_attn_norm = self.hf_model_config.do_layer_norm_before

def get_hidden_heads(self):
return self.client_module.self_attn.embed_dim, \
self.client_module.self_attn.num_heads
Expand Down