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[Accuracy diff No.96] Fix accuracy diff for paddle.incubate.nn.functional.variable_length_memory_efficient_attention API - #498
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done in #540 |
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修复
variable_length_memory_efficient_attentionAPI 的两处地方。Paddle 中该 API 的实现是调用 cutlass 的，所以认为它的实现正确，以修改 PaddleAPITest 框架为主。tester/api_config/config_analyzer.py：mask数组中的元素要么是 -inf 要么是 0，在计算时 attention 的结果加上 mask 再执行 softmax 即可完成 mask 掉某些元素的效果。tester/paddle_to_torch/rules.py：修复了 K 和 V 扩展 head_dim 的方法；修复了 mask 和 mask_fill 顺序，前者应该在前否则它会覆盖掉 mask_fill 的结果