# Install pARMS library of parallel solvers

**URL:** <https://community.freefem.org/t/install-parms-library-of-parallel-solvers/480>\
**Category:** General Discussion\
**Created:** [June 21, 2020, 3:17am UTC](https://community.freefem.org/t/install-parms-library-of-parallel-solvers/480 "2020-06-21T03:17:33Z")\
**Posts on this page:** 1\
**Showing post:** 4

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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:** [June 22, 2020, 5:11am UTC](https://community.freefem.org/t/install-parms-library-of-parallel-solvers/480/4 "2020-06-22T05:11:11Z")

</div>

If you are using [this](https://github.com/FreeFem/FreeFem-sources/releases/download/v4.6/FreeFEM-4.6-win7-64.exe) binary, you can just replace:

```auto
matrix A;
set(A, solver = sparsesolver);
real[int] sol = A^-1 * rhs;

```

by:

```auto
load "PETSc"
matrix A;
Mat wrap(A);
set(wrap, sparams = "-pc_type hypre -ksp_converged_reason");
real[int] sol = wrap^-1 * rhs;

```

You do not have to install _hypre_ yourself. It’s done for you and packaged inside the PETSc plugin.

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