# Launch Calculix solver from PrePoMax?

**URL:** <https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967>\
**Category:** General Questions\
**Created:** [June 28, 2023, 2:09pm UTC](https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967 "2023-06-28T14:09:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mechgru](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@Mechgru](https://prepomax.discourse.group/u/Mechgru)\
**Post date:** [June 28, 2023, 2:09pm UTC](https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967/1 "2023-06-28T14:09:04Z")

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Hi,

Is it possible to launch a Calculix run from the PrePoMax GUI in the same way as Abaqus/CAE?

I’ve made some modifications to the input file using a text editor as the Calculix functionality is not available in PrePoMax. Is it possible to run the analysis without PrePoMax over-writing the input file. Or is there another way of doing this?

Thanks,

Rod

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [June 28, 2023, 2:15pm UTC](https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967/2 "2023-06-28T14:15:41Z")

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No, you have to run the analysis from the command line (outside of PrePoMax) in such cases. Here’s a detailed instruction: [Using standalone CalculiX](https://prepomax.discourse.group/t/using-standalone-calculix/846)

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**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [June 28, 2023, 2:42pm UTC](https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967/3 "2023-06-28T14:42:30Z")

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You can edit the keywords inside PrePoMax and then use PrePoMax in a standard way.

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<div class="post-metadata">

**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [June 28, 2023, 3:14pm UTC](https://prepomax.discourse.group/t/launch-calculix-solver-from-prepomax/967/4 "2023-06-28T15:14:37Z")

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In most cases this is sufficient but sometimes outside edits are necessary or more convenient.