# How to save a trained policy in SDDP.jl?

**URL:** <https://discourse.julialang.org/t/how-to-save-a-trained-policy-in-sddp-jl/128894>\
**Category:** Optimization (Mathematical)\
**Tags:** sddp\
**Created:** [May 10, 2025, 3:56pm UTC](https://discourse.julialang.org/t/how-to-save-a-trained-policy-in-sddp-jl/128894 "2025-05-10T15:56:08Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Engr\_Moiz\_Ahmad](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/engr_moiz_ahmad/32/214621_2.png) [@Engr\_Moiz\_Ahmad](https://discourse.julialang.org/u/Engr_Moiz_Ahmad)\
**Post date:** [May 10, 2025, 3:56pm UTC](https://discourse.julialang.org/t/how-to-save-a-trained-policy-in-sddp-jl/128894/1 "2025-05-10T15:56:08Z")

</div>

I am dealing with a multi-stage mixed-integer stochastic global supply chain optimization problem and want to solve it using the SDDiP algorithm using the [SDDP.jl](https://juliaregistries.github.io/General/packages/redirect_to_repo/SDDP) package in Julia.

In this regard, I want to download the trained policy after several iterations so I can upload it later for retraining in a different session.

---

<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:** [May 10, 2025, 9:52pm UTC](https://discourse.julialang.org/t/how-to-save-a-trained-policy-in-sddp-jl/128894/2 "2025-05-10T21:52:14Z")

</div>

See:

- `write_cuts_to_file`: [API Reference · SDDP.jl](https://sddp.dev/stable/apireference/#write_cuts_to_file)
- `read_cuts_from_file`: [API Reference · SDDP.jl](https://sddp.dev/stable/apireference/#SDDP.read_cuts_from_file)

---

<div class="post-metadata">

**Author:** ![Engr\_Moiz\_Ahmad](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/engr_moiz_ahmad/32/214621_2.png) [@Engr\_Moiz\_Ahmad](https://discourse.julialang.org/u/Engr_Moiz_Ahmad)\
**Post date:** [May 11, 2025, 5:48pm UTC](https://discourse.julialang.org/t/how-to-save-a-trained-policy-in-sddp-jl/128894/3 "2025-05-11T17:48:37Z")

</div>

Got it. It worked.