# Load error: MUMPS\_FreeFem
**URL:** https://community.freefem.org/t/load-error-mumps-freefem/1762
**Category:** General Discussion
**Created:** [May 20, 2022, 12:39pm UTC](https://community.freefem.org/t/load-error-mumps-freefem/1762 "2022-05-20T12:39:15Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Qianrui](https://community.freefem.org/u/Qianrui)
#### Post date: [May 20, 2022, 12:39pm UTC](https://community.freefem.org/t/load-error-mumps-freefem/1762/1 "2022-05-20T12:39:15Z")
I used the example in the reference book. Why can’t it run?
> load “MUMPS\_FreeFem”
> //default solver: real-\> MUMPS, complex → MUMPS
> load “real\_SuperLU\_DIST\_FreeFem”
> default solver: real-\> SuperLU\_DIST, complex → MUMPS
> load “real\_pastix\_FreeFem”
> //default solver: real-\> pastix, complex → MUMPS
> // Solving with pastix
> {
> matrix A =
> [[1, 2, 2, 1, 1],
> [2, 12, 0, 10 , 10],
> [2, 0, 1, 0, 2],
> [1, 10, 0, 22, 0.],
> [1, 10, 2, 0., 22]];
>
> real[int] xx = [1, 32, 45, 7, 2], x(5), b(5), di(5);
> b = A\*xx;
> cout \<\< "b = " \<\< b \<\< endl;
> cout \<\< "xx = " \<\< xx \<\< endl;
>
> set(A, solver=sparsesolver, datafilename=“ffpastix\_iparm\_dparm.txt”);
> Load error: MUMPS\_FreeFem
> fail:
> list prefix: 'E:\FreeFem++\.' list suffix: ‘’ , ‘.dll’
> current line = 49
> Load error : MUMPS\_FreeFem
> line number :49, MUMPS\_FreeFem
> error Load error : MUMPS\_FreeFem
> line number :49, MUMPS\_FreeFem
> code = 2 mpirank: 0
> try getConsole E:\FreeFem++\idp\05.20xuexi.edp
> save log in : ‘E:\FreeFem++\idp\05.20xuexi.log’
> wait enter ?
---
### Author:  [@henkel](https://community.freefem.org/u/henkel)
#### Post date: [May 21, 2022, 4:00pm UTC](https://community.freefem.org/t/load-error-mumps-freefem/1762/2 "2022-05-21T16:00:00Z")
Parts of the documentation are outdated and this plugin has been renamed. You have to load `MUMPS_seq` or `MUMPS_mpi`. Take a look at the [plugins](https://github.com/FreeFem/FreeFem-sources/tree/master/plugin) directory and the [examples](https://github.com/FreeFem/FreeFem-sources/tree/master/examples/examples) for the details.
But I would recommend you to use MUMPS via the PETSc interface instead.