# Scilab 2026.0.0 W11 Crash during Optimization

**URL:** <https://scilab.discourse.group/t/scilab-2026-0-0-w11-crash-during-optimization/1169>\
**Category:** Development\
**Created:** [June 5, 2026, 6:50am UTC](https://scilab.discourse.group/t/scilab-2026-0-0-w11-crash-during-optimization/1169 "2026-06-05T06:50:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Nonwolf93](https://avatars.discourse-cdn.com/v4/letter/n/a698b9/32.png) [@Nonwolf93](https://scilab.discourse.group/u/Nonwolf93)\
**Post date:** [June 5, 2026, 6:50am UTC](https://scilab.discourse.group/t/scilab-2026-0-0-w11-crash-during-optimization/1169/1 "2026-06-05T06:50:18Z")

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Good moorning,  
I’m running an optimization cycle with NSGA II tool.  
Scilab commands various other software such as Ansys and Openfoam.  
I encountered two instability problems that cause Scilab to crash:

1. Creation of graphic windows for each individual: After about one hour the continuous creation cause crash. I resolved by disabling creation ( not mandatory in my case)
2. on a simple operation of reading a text file, in which it has 10 physical cores and many gigabytes of RAM available.

This happens when:

- after a few hours of use
- seems to be related to minimizing it

Two months ago the cycle ran continuously for 3 weeks, but I don’t remember if it was minimized.

Now I’m trying version 2026.1.0 without minimizing.

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**Author:** ![davidcl](https://yyz2.discourse-cdn.com/free1/user_avatar/scilab.discourse.group/davidcl/32/1029_2.png) [@davidcl](https://scilab.discourse.group/u/davidcl)\
**Post date:** [June 15, 2026, 6:41am UTC](https://scilab.discourse.group/t/scilab-2026-0-0-w11-crash-during-optimization/1169/2 "2026-06-15T06:41:27Z")

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Hello,

Could you post a reduced example to let us investigate ?

For issues, we use [Gitlab](https://gitlab.com/scilab/scilab/-/issues) ; please post there.