masahi commented on code in PR #14907:
URL: https://github.com/apache/tvm/pull/14907#discussion_r1201634861
##########
python/tvm/relax/op/nn/nn.py:
##########
@@ -1035,13 +1036,32 @@ def attention(
a 4-D tensor ending with seq_len_kv, and broadcastable to
(batch_size, num_head, seq_len, seq_len_kv).
- scale: Optional[FloatImm]
- The custom scale applied before the softmax. The default value is 1 /
sqrt(head_dim).
+ causal_mask: Optional[str]
+ The optional causal mask, i.e. 'TopLeft' and 'BottomRight'.
+ For example, with seq_len = 4, seq_len_kv = 2,
+ mask for 'TopLeft':
+ [[1, 0],
+ [1, 1],
+ [1, 1],
+ [1, 1]]
+ mask for 'BottomRight':
+ [[1, 1],
+ [1, 1],
+ [1, 1],
+ [1, 1]]
Review Comment:
All elements are one. Is this correct?
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