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Fix Alibi in the flex-attention blog post #1825

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Fix Alibi in the flex-attention blog post #1825

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ac77da5
Update 2024-08-07-flexattention.md
kashif Dec 2, 2024
0d18c01
Merge branch 'site' into patch-1
kashif Feb 4, 2025
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4 changes: 2 additions & 2 deletions _posts/2024-08-07-flexattention.md
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Original file line number Diff line number Diff line change
Expand Up @@ -131,7 +131,7 @@ Alibi is similar to relative positional encodings with one exception \- it has a
alibi_bias = generate_alibi_bias() # [num_heads]

def alibi(score, b, h, q_idx, kv_idx):
bias = alibi_bias[h] * (q_idx - kv_idx)
bias = alibi_bias[h] * (kv_idx - q_idx)
return score + bias
```

Expand Down Expand Up @@ -479,4 +479,4 @@ We want to highlight some prior work (and people) that have inspired FlexAttenti
- The Jax team's work on SplashAttention
- Philippe Tillet and Keren Zhou for helping us with Triton
- Ali Hassani for discussions on neighborhood attention
- Everybody who's complained about attention kernels not supporting their favorite attention variant :)
- Everybody who's complained about attention kernels not supporting their favorite attention variant :)