[Gen] Remove minor dead code

flash_attn/models/gpt_neox.py

@@ -27,7 +27,7 @@ def remap_state_dict_hf_gpt_neox(state_dict, config):
     state_dict["transformer.embeddings.word_embeddings.weight"] = F.pad(
         word_embeddings, (0, 0, 0, vocab_size - word_embeddings.shape[0])
     )
-    if getattr(config, "tie_word_embeddings"):
+    if getattr(config, "tie_word_embeddings", False):
         state_dict["lm_head.weight"] = state_dict["transformer.embeddings.word_embeddings.weight"]
     else:
         output_embeddings = state_dict.pop("embed_out.weight")

flash_attn/utils/generation.py

@@ -591,10 +591,6 @@ def allocate_inference_cache(
     dtype=torch.float16,
 ):
     assert dtype in [torch.float16, torch.bfloat16, torch.float32]
-    packsize = 4 if dtype == torch.float32 else 8
-    assert headdim % packsize == 0
-    k_cache_shape = (max_batch_size, nheads, headdim // packsize, max_seqlen, packsize)
-    v_cache_shape = (max_batch_size, nheads, max_seqlen, headdim)
     kv_cache_shape = (max_batch_size, max_seqlen, 2, nheads, headdim)
     if isinstance(layers, int):
         layers = range(layers)