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Posted to commits@tvm.apache.org by GitBox <gi...@apache.org> on 2020/03/06 21:55:21 UTC

[GitHub] [incubator-tvm] sergei-grechanik commented on issue #1996: [RFC][WIP] Tensor Expression level automatic differentiation

sergei-grechanik commented on issue #1996: [RFC][WIP] Tensor Expression level automatic differentiation
URL: https://github.com/apache/incubator-tvm/issues/1996#issuecomment-595981655
 
 
   @MarisaKirisame One approach that I know of is to differentiate by literally reversing the computation, replacing loads with stores (with `+=` actually) and vice versa. This is usually considered a worse approach because it leads to synchronization problems, but it should be better for some ops, and I guess the worst case performance shouldn't be that horrible.

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