# Save fespace array to HDF5

**URL:** <https://community.freefem.org/t/save-fespace-array-to-hdf5/238>\
**Category:** General Discussion\
**Created:** [February 6, 2020, 8:10am UTC](https://community.freefem.org/t/save-fespace-array-to-hdf5/238 "2020-02-06T08:10:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nicoloabrate](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/nicoloabrate/32/1242_2.png) [@nicoloabrate](https://community.freefem.org/u/nicoloabrate)\
**Post date:** [February 6, 2020, 8:10am UTC](https://community.freefem.org/t/save-fespace-array-to-hdf5/238/1 "2020-02-06T08:10:46Z")

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Dear developers,  
is it possible to store the problem solutions and meshes to HDF5 format, since it is included in the required packages for the installation? It would be extremely useful and faster than writing on txt files…  
Thank you so much in advance,  
best regards  
Nicolò

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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 6, 2020, 8:46am UTC](https://community.freefem.org/t/save-fespace-array-to-hdf5/238/2 "2020-02-06T08:46:13Z")

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1. it’s actually not required, you can disable it `--with-hdf5=no` during `./configure`
2. there is an example in `examples/plugin/iohd5-beam-3d.edp`
3. if you use PETSc/SLEPc and have HDF5 support, you can add to your parameters `-ksp_view_solution hdf5:my_sol`