update for recent transformers updates (#636)

* update for recent transformers updates

* fix checkpoint forward kwargs

* just pass args into torch checkpoint

src/axolotl/monkeypatch/llama_attn_hijack_flash.py

@@ -99,6 +99,7 @@ def flashattn_forward(
     past_key_value: Optional[Tuple[torch.Tensor]] = None,
     output_attentions: bool = False,
     use_cache: bool = False,
+    padding_mask: Optional[torch.LongTensor] = None,  # pylint: disable=unused-argument
     cu_seqlens: Optional[torch.Tensor] = None,
     max_seqlen: Optional[torch.Tensor] = None,
 ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
@@ -476,6 +477,13 @@ def llama_model_forward(
             dtype=torch.bool,
             device=inputs_embeds.device,
         )
+        padding_mask = None
+    else:
+        if 0 in attention_mask:
+            padding_mask = attention_mask
+        else:
+            padding_mask = None
+
     attention_mask = (
         self._prepare_decoder_attention_mask(  # pylint: disable=protected-access
             attention_mask,
@@ -510,7 +518,9 @@ def llama_model_forward(
             def create_custom_forward(module):
                 def custom_forward(*inputs):
                     # None for past_key_value
-                    return module(*inputs)
+                    return module(
+                        *inputs,
+                    )
 
                 return custom_forward
 
@@ -519,9 +529,10 @@ def custom_forward(*inputs):
                 hidden_states,
                 attention_mask,
                 position_ids,
-                None,
+                past_key_value,
                 output_attentions,
                 None,
+                padding_mask,
                 cu_seqlens,
                 max_seqlen,
             )
@@ -533,6 +544,7 @@ def custom_forward(*inputs):
                 past_key_value=past_key_value,
                 output_attentions=output_attentions,
                 use_cache=use_cache,
+                padding_mask=padding_mask,
                 cu_seqlens=cu_seqlens,
                 max_seqlen=max_seqlen,
             )
@@ -579,6 +591,7 @@ def forward(
         past_key_value: Optional[Tuple[torch.Tensor]] = None,
         output_attentions: Optional[bool] = False,
         use_cache: Optional[bool] = False,
+        padding_mask: Optional[torch.LongTensor] = None,
         cu_seqlens: Optional[torch.Tensor] = None,
         max_seqlen: Optional[torch.Tensor] = None,
     ) -> Tuple[
@@ -611,6 +624,7 @@ def forward(
             past_key_value=past_key_value,
             output_attentions=output_attentions,
             use_cache=use_cache,
+            padding_mask=padding_mask,
             cu_seqlens=cu_seqlens,
             max_seqlen=max_seqlen,
         )