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Posted to discuss-archive@tvm.apache.org by Deep Ignorance via TVM Discuss <no...@discuss.tvm.ai> on 2020/04/03 10:07:52 UTC

[TVM Discuss] [Questions] [Question] JacobianMutaor on ReduceNode


I noticed the new codes about autodiff at tir level. Most of the code is clear but one implementation detail is confusing.
File `src/te/autodiff/jacobian.cc` line 182-270. Why does the new ReduceNode need to return original values? Does it mean that during backward process, some forward computation will be re-done for some reason?





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