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fix FlashAttnOpInferSymbolicShape and FlashAttnInferMeta - #63816
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zyfncg merged 5 commits intoApr 26, 2024
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zyfncg
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Apr 24, 2024
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| auto batch_size = q.dims()[0]; | ||
| auto num_heads = q.dims()[2]; | ||
| auto seqlen_q_rounded = round_multiple(q.dims()[1]); |
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这里简单的int类型最好还是用原始的数据类型，auto表示不够直观，会提高阅读成本，增加犯错的概率
zyfncg
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Apr 25, 2024
phlrain
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Apr 25, 2024
| op->result(0), symbol::TensorShapeOrDataDimExprs(out_shape)); | ||
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| auto round_multiple = [](symbol::DimExpr x) { | ||
| auto m = symbol::DimExpr{128}; |
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这个地方为啥 选择128， 是kernel里面写的128么
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cuda kernel用了基于128的round，但是XPU没有，这里暂时和cuda kernel保持一致并增加备注。
| auto m_minus_one = symbol::DimExpr{127}; | ||
| return (x + m_minus_one) / m * m; | ||
| }; | ||
| auto batch_size_expr = q.shape()[0]; |
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能够加一个 q.shape size 的检查，防止传入了错误的输入，这里直接core dump
phlrain
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April 26, 2024 03:25
phlrain
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Apr 26, 2024
runzhech
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Apr 30, 2024
…e#63816) * fix FlashAttnOpInferSymbolicShape and FlashAttnInferMeta * use int for simple value * add check and constraint * fix * add shape constraint for attention_mask
runzhech
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Apr 30, 2024
…e#63816) * fix FlashAttnOpInferSymbolicShape and FlashAttnInferMeta * use int for simple value * add check and constraint * fix * add shape constraint for attention_mask
co63oc
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May 10, 2024
…e#63816) * fix FlashAttnOpInferSymbolicShape and FlashAttnInferMeta * use int for simple value * add check and constraint * fix * add shape constraint for attention_mask
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PR Category
Others
PR Types
Bug fixes
Description
Pcard-67164
This PR fixed FlashAttnOpInferSymbolicShape and FlashAttnInferMeta by adding shape inferring for softmax, softmax_lse and seed_offset.