# Which solver/model library can be used recursively / reentrantly

**URL:** <https://discourse.julialang.org/t/which-solver-model-library-can-be-used-recursively-reentrantly/51294>\
**Category:** Optimization (Mathematical)\
**Tags:** question, package, jump\
**Created:** [December 5, 2020, 11:47am UTC](https://discourse.julialang.org/t/which-solver-model-library-can-be-used-recursively-reentrantly/51294 "2020-12-05T11:47:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [December 6, 2020, 12:34am UTC](https://discourse.julialang.org/t/which-solver-model-library-can-be-used-recursively-reentrantly/51294/2 "2020-12-06T00:34:34Z")

</div>

Hi there! Since this is your first time posting, take a moment to read to suggestions at: [Please read: make it easier to help you](https://discourse.julialang.org/t/psa-make-it-easier-to-help-you/14757)

In particular, it’s easier to provide an answer if you can make your question more concrete, e.g., by supplying a minimal example of the code you have tried, or an implementation of a toy model.

You can also use the search feature of discourse to look for similar questions.

For example, there might be some issues with `@theads` and the solvers:

> [@Multithreading unstable with JuMP](https://discourse.julialang.org/t/multithreading-unstable-with-jump/49494/16):
>
> I have tested your suggestion of making the variable assignment inside the loop local. On another model with actual data this gives incorrect results. If a race condition arises then use of local may be not be a good idea. It may have worked for your specific case, but in the MWE above it is mixing up something. Locks can be used in a race condition, but this tend to slowdown the program. If possible, I would prefer to code it in a way that race condition is avoided. I also got into problem wit…

There is also this post on StackOverflow:

> <https://stackoverflow.com/questions/64177415/create-jump-model-with-multi-threading-in-julia>

---

_[View the full topic](https://discourse.julialang.org/t/which-solver-model-library-can-be-used-recursively-reentrantly/51294)._