# No gradient is calculated during Flux training with ODE

**URL:** <https://discourse.julialang.org/t/no-gradient-is-calculated-during-flux-training-with-ode/42455>\
**Category:** General Usage\
**Tags:** diffeq, flux\
**Created:** [July 2, 2020, 10:06pm UTC](https://discourse.julialang.org/t/no-gradient-is-calculated-during-flux-training-with-ode/42455 "2020-07-02T22:06:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yanz4](https://avatars.discourse-cdn.com/v4/letter/y/b5e925/32.png) [@yanz4](https://discourse.julialang.org/u/yanz4)\
**Post date:** [July 2, 2020, 10:06pm UTC](https://discourse.julialang.org/t/no-gradient-is-calculated-during-flux-training-with-ode/42455/1 "2020-07-02T22:06:41Z")

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This post was temporarily hidden by the community for possibly being off-topic, unfocused, inappropriate, or spammy.

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**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [July 4, 2020, 7:37am UTC](https://discourse.julialang.org/t/no-gradient-is-calculated-during-flux-training-with-ode/42455/2 "2020-07-04T07:37:18Z")

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The solution to this is the same as [The tracked parameters are not updated during Flux.training - #2 by ChrisRackauckas](https://discourse.julialang.org/t/the-tracked-parameters-are-not-updated-during-flux-training/42507/2)