# StochasticDiffEq Tau-Leaping maxiters

**URL:** <https://discourse.julialang.org/t/stochasticdiffeq-tau-leaping-maxiters/95517>\
**Category:** Modelling & Simulations\
**Tags:** package, differentialequation\
**Created:** [March 3, 2023, 10:14pm UTC](https://discourse.julialang.org/t/stochasticdiffeq-tau-leaping-maxiters/95517 "2023-03-03T22:14:07Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![isaacsas](https://avatars.discourse-cdn.com/v4/letter/i/f6c823/32.png) [@isaacsas](https://discourse.julialang.org/u/isaacsas)\
**Post date:** [March 4, 2023, 2:07am UTC](https://discourse.julialang.org/t/stochasticdiffeq-tau-leaping-maxiters/95517/7 "2023-03-04T02:07:01Z")

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Just to add, I think the real way to handle this issue is by having a multiscale algorithm that will resolve low population species with exact jumps and high population species with tau-leaping, but we don’t have that implemented yet.

Someone had a similar issue recently and posted a callback approach to having both methods, so maybe you could give that a try:

> [@Improving the speed of large population simulations in DifferentialEquations.jl](https://discourse.julialang.org/t/improving-the-speed-of-large-population-simulations-in-differentialequations-jl/93109/9):
>
> Hi @ChrisRackauckas - thanks for your reply. I’m happy to explore this further, with the caveats that I haven’t had a chance to look through the paper in detail yet and lack formal mathematical training so this would probably require some patience on your part. Would you recommend setting up the game of life example as a toy model to get some intuition for how the approach works? Sorry can you just clarify what you mean by ‘… to specialize on’? Finally, here is an attempt i’ve made to swit…

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