# HDF5 Library issue - Serial is found but not MPI

**URL:** <https://fenicsproject.discourse.group/t/hdf5-library-issue-serial-is-found-but-not-mpi/15768>\
**Category:** dolfinx\
**Created:** [September 10, 2024, 2:32pm UTC](https://fenicsproject.discourse.group/t/hdf5-library-issue-serial-is-found-but-not-mpi/15768 "2024-09-10T14:32:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sbhamidipati](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/sbhamidipati/32/7524_2.png) [@sbhamidipati](https://fenicsproject.discourse.group/u/sbhamidipati)\
**Post date:** [September 10, 2024, 2:32pm UTC](https://fenicsproject.discourse.group/t/hdf5-library-issue-serial-is-found-but-not-mpi/15768/1 "2024-09-10T14:32:30Z")

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Dear all,

I have seen this post before posting this message. [https://fenicsproject.discourse.group/t/dolfinx-build-issue-found-serial-hdf5-build-mpi-hdf5-build-required/13893/7](https://fenicsproject.discourse.group/t/dolfinx-build-issue-found-serial-hdf5-build-mpi-hdf5-build-required/13893).

Yet, after following everything, I still see the following error  
`Found serial HDF5 build, MPI HDF5 build required, try setting HDF5_DIR or HDF5_ROOT`

CCMAKE dump:

 ![image](https://global.discourse-cdn.com/free1/uploads/fenicsproject1/original/2X/8/86765a88462943d334ac358055af75ac1e3ab0e0.png)

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**Author:** ![francesco-ballarin](https://avatars.discourse-cdn.com/v4/letter/f/f05b48/32.png) [@francesco-ballarin](https://fenicsproject.discourse.group/u/francesco-ballarin)\
**Post date:** [September 11, 2024, 6:09am UTC](https://fenicsproject.discourse.group/t/hdf5-library-issue-serial-is-found-but-not-mpi/15768/2 "2024-09-11T06:09:01Z")

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The error already says it all. You hdf5 installation needs to come from a build configured with `./configure --enable-parallel`.