# Error occurs in UMFPACK solver 3D problem

**URL:** <https://community.freefem.org/t/error-occurs-in-umfpack-solver-3d-problem/2949>\
**Category:** General Discussion\
**Created:** [February 8, 2024, 2:46pm UTC](https://community.freefem.org/t/error-occurs-in-umfpack-solver-3d-problem/2949 "2024-02-08T14:46:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sumantkr](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/sumantkr/32/2681_2.png) [@sumantkr](https://community.freefem.org/u/sumantkr)\
**Post date:** [February 8, 2024, 2:46pm UTC](https://community.freefem.org/t/error-occurs-in-umfpack-solver-3d-problem/2949/1 "2024-02-08T14:46:35Z")

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Hello everyone!!!  
While handling the denser meshing style in the 3D domain, the solver “UMFPACK” is failing.

error is

`error umpfack umfpack_di_numeric" status -1 error umfpack_di_solve status -3`

Also, suggest suitable a SOLVER that can handle complex mesh in 3D problems.

Thanks!!!

Please help me to fix this error. Also, comment on how to

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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:** [February 8, 2024, 4:08pm UTC](https://community.freefem.org/t/error-occurs-in-umfpack-solver-3d-problem/2949/2 "2024-02-08T16:08:19Z")

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Use MUMPS, that’s much more efficient and works in parallel.

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<div class="post-metadata">

**Author:** ![sumantkr](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/sumantkr/32/2681_2.png) [@sumantkr](https://community.freefem.org/u/sumantkr)\
**Post date:** [February 8, 2024, 4:51pm UTC](https://community.freefem.org/t/error-occurs-in-umfpack-solver-3d-problem/2949/3 "2024-02-08T16:51:19Z")

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Thanks @prj

For now, I am not using MPI and parallelization for the code.

Also, directly using “MUMPS” shows an error.

Can you please suggest any alternate way to handle this issue?