# Instability diffeq

**URL:** <https://discourse.julialang.org/t/instability-diffeq/69062>\
**Category:** General Usage\
**Tags:** diffeq\
**Created:** [October 1, 2021, 5:16pm UTC](https://discourse.julialang.org/t/instability-diffeq/69062 "2021-10-01T17:16:26Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [October 1, 2021, 6:09pm UTC](https://discourse.julialang.org/t/instability-diffeq/69062/2 "2021-10-01T18:09:26Z")

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Do you do everything mentioned here?

> [@PSA: How to help yourself debug differential equation solving issues](https://discourse.julialang.org/t/psa-how-to-help-yourself-debug-differential-equation-solving-issues/62489):
>
> Debugging differential equation solver issues almost always boils down to doing the same thing, so this is a summary to help you out. For more information on specific issues, check out the FAQ section of the DifferentialEquations.jl documentation which highlights common issues and questions: [https://diffeq.sciml.ai/dev/basics/faq/](https://diffeq.sciml.ai/dev/basics/faq/)How do I debug why the differential equation solver is diverging? dt \<= dtmin. Aborting. There is either an error in your model specification or the true solution i…

Note dependent mass matrices are less stably handled by Rosenbrock methods, so did you try DAEProblem with IDA?

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