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Why sdp has two X module? about hw HOT 5 OPEN

FengJungle avatar FengJungle commented on August 17, 2024
Why sdp has two X module?

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Comments (5)

FengJungle avatar FengJungle commented on August 17, 2024

And one more question: Compared with X1/X2, the difference in Y is the LUT. Why the SDP is X1 + X2 + Y(with LUT), but not a single X(with LUT)?
Could anyone share the design idea?
Thanks a lot!

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bg193 avatar bg193 commented on August 17, 2024

从设计上看可能是为了支持算子融合

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FengJungle avatar FengJungle commented on August 17, 2024

从设计上看可能是为了支持算子融合

你是说,计算图中可能有相邻的两个使用到sdp的算子可以融合到一个sdp完成吗?看nvdla的compiler源码的确有这样的操作

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bg193 avatar bg193 commented on August 17, 2024

从设计上看可能是为了支持算子融合

你是说,计算图中可能有相邻的两个使用到sdp的算子可以融合到一个sdp完成吗?看nvdla的compiler源码的确有这样的操作

理论上可以一个通路做bias,一个做norm

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FengJungle avatar FengJungle commented on August 17, 2024

嗯,实际上源码里也的确有这样的融合的优化处理。不过一个x+y模块也可以完成算子融合,我只是很奇怪为什么是两个x而不是1个或者3个?文档里也没有给出说明。所以就想问问大家的看法。

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