# Petsc direct solvers

**URL:** <https://community.freefem.org/t/petsc-direct-solvers/1664>\
**Category:** General Discussion\
**Created:** [April 12, 2022, 6:21pm UTC](https://community.freefem.org/t/petsc-direct-solvers/1664 "2022-04-12T18:21:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mrbenson](https://avatars.discourse-cdn.com/v4/letter/m/d07c76/32.png) [@mrbenson](https://community.freefem.org/u/mrbenson)\
**Post date:** [April 12, 2022, 6:21pm UTC](https://community.freefem.org/t/petsc-direct-solvers/1664/1 "2022-04-12T18:21:52Z")

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Hello,

Using petsc module, how can I be sure about the solver among mumps or pardiso ?  
It’s not very clear since I don’t import mumps modules, which solver is user by default ?

Thanks for the explanation.

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**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [April 12, 2022, 6:24pm UTC](https://community.freefem.org/t/petsc-direct-solvers/1664/2 "2022-04-12T18:24:05Z")

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MUMPS. You can see that using `-ksp_view` in your `sparams` or as a command line argument.