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- '''Copyright The Microsoft DeepSpeed Team'''
- from .base import *
- from deepspeed.model_implementations.transformers.ds_bert import DeepSpeedBERTInference
- import torch
- from torch.nn.parameter import Parameter
- from ..policy import TransformerPolicy
- class DS_BERTContainer(BaseTransformerContainer):
- def __init__(self, **kwargs):
- super().__init__(**kwargs)
- # All model specific things should be defined here instead of the base class.
- self.return_tuple = True
- self.triangular_masking = False
- def create_module(self, config=None):
- _config = config if config is not None else self.ds_model_config
- self.module = DeepSpeedBERTInference(_config, mp_group=self.mp_group)
- self.module.config.scale_attention = self.scale_attention
- return self.module
- class HFBertLayerPolicy(TransformerPolicy):
- def __init__(self, client_module, inference=False):
- super().__init__(inference, pre_attn_norm=False)
- self.client_module = client_module
- self.cuda_graph_supported = True
- if HFBertLayerPolicy._orig_layer_class is None:
- try:
- import transformers
- HFBertLayerPolicy._orig_layer_class = [
- transformers.models.bert.modeling_bert.BertLayer,
- transformers.models.roberta.modeling_roberta.RobertaLayer
- ]
- except:
- HFBertLayerPolicy._orig_layer_class = None
- def get_hidden_heads(self):
- return self.client_module.attention.self.query.weight.shape[1], \
- self.client_module.attention.self.num_attention_heads
- def attention(self):
- qw = self.client_module.attention.self.query.weight
- qb = self.client_module.attention.self.query.bias
- kw = self.client_module.attention.self.key.weight
- kb = self.client_module.attention.self.key.bias
- vw = self.client_module.attention.self.value.weight
- vb = self.client_module.attention.self.value.bias
- qkvw = Parameter(torch.cat((qw, kw, vw), dim=0), requires_grad=False)
- qkvb = Parameter(torch.cat((qb, kb, vb), dim=0), requires_grad=False)
- return qkvw, \
- qkvb, \
- self.client_module.attention.output.dense.weight, \
- self.client_module.attention.output.dense.bias, \
- def mlp(self):
- if self.pre_attn_norm:
- intermediate_ff = self.client_module.intermediate.dense_act
- else:
- intermediate_ff = self.client_module.intermediate.dense
- return intermediate_ff.weight, intermediate_ff.bias, \
- self.client_module.output.dense.weight, \
- self.client_module.output.dense.bias
- def layernorm(self):
- if self.pre_attn_norm:
- attention_layernorm = self.client_module.PostAttentionLayerNorm
- transformer_layernorm = self.client_module.PreAttentionLayerNorm
- else:
- attention_layernorm = self.client_module.attention.output.LayerNorm
- transformer_layernorm = self.client_module.output.LayerNorm
- return attention_layernorm.weight, \
- attention_layernorm.bias, \
- transformer_layernorm.weight, \
- transformer_layernorm.bias
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