# What is the maximum PDE dimension that you have seen in a prodution environment?

**URL:** <https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843>\
**Category:** General Discussion\
**Created:** [December 21, 2023, 4:11pm UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843 "2023-12-21T16:11:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![generator](https://avatars.discourse-cdn.com/v4/letter/g/b9e5f3/32.png) [@generator](https://community.freefem.org/u/generator)\
**Post date:** [December 21, 2023, 4:11pm UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843/1 "2023-12-21T16:11:25Z")

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Hello,

I’m wondering what is the maximum dimension of a PDE engine that you have seen working in a production system ?  
I mean a realiable system, used every day, with heavy usage from users, etc…

thanks

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**Author:** ![lassounon](https://avatars.discourse-cdn.com/v4/letter/l/bbe5ce/32.png) [@lassounon](https://community.freefem.org/u/lassounon)\
**Post date:** [December 22, 2023, 12:45pm UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843/2 "2023-12-22T12:45:38Z")

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What do you want, your question is not clear. Is your question related to Freefem++ codes?

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**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [December 24, 2023, 3:49pm UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843/3 "2023-12-24T15:49:40Z")

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No with composite Finite element I think more thank 20, before it is quite slow.

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**Author:** ![lassounon](https://avatars.discourse-cdn.com/v4/letter/l/bbe5ce/32.png) [@lassounon](https://community.freefem.org/u/lassounon)\
**Post date:** [January 4, 2024, 8:16am UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843/4 "2024-01-04T08:16:54Z")

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Okay, thank you professor and happy new year.

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<div class="post-metadata">

**Author:** ![generator](https://avatars.discourse-cdn.com/v4/letter/g/b9e5f3/32.png) [@generator](https://community.freefem.org/u/generator)\
**Post date:** [January 4, 2024, 9:10am UTC](https://community.freefem.org/t/what-is-the-maximum-pde-dimension-that-you-have-seen-in-a-prodution-environment/2843/5 "2024-01-04T09:10:07Z")

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Ok, thank you.  
So to have an efficient PDE engine as a software component of a production system(dimension up to around 20) is doable.