[petsc-users] Problem running ex50 after compilation

[Srinivas Kirthy K]

Works now. Thank you.

On Sat, Jan 31, 2026 at 1:29 PM Satish Balay <balay.anl at fastmail.org> wrote:

> On Sat, 31 Jan 2026, Srinivas Kirthy K wrote:
>
> > Hi Satish,
> >
> > I included this line in the makefile:
> >
> > *mpiexec: "${PETSC_DIR}/${PETSC_ARCH}/bin/mpiexec" *
> >
> > Was able to compile, still getting the same error when I run *mpiexec -n
> 1
> > ./ex50  -da_grid_x 4 -da_grid_y 4 -mat_view*
> >
> > Anything that I'm doing wrong?
>
> Use:
>
> /home/skirthy/petsc/arch-linux-c-debug/bin/mpiexec -n 1 ./ex50  -da_grid_x
> 4 -da_grid_y 4 -mat_view
>
> Satish
>
> >
> > Thanks.
> >
> >
> > On Sat, Jan 31, 2026 at 10:54 AM Satish Balay <balay.anl at fastmail.org>
> > wrote:
> >
> > > >>>>
> > > Configure Options: --configModules=PETSc.Configure
> > > --optionsModule=config.compilerOptions --download-mpich
> > > --download-fblaslapack
> > > <<<<
> > >
> > > Ok - so you've installed MPI via --download-mpich - so you need to use:
> > >
> > > >>>
> > >   mpiexec: /home/skirthy/petsc/arch-linux-c-debug/bin/mpiexec
> > > <<<
> > >
> > > [likely mpiexec used below is a different one]
> > >
> > > Satish
> > >
> > > On Sat, 31 Jan 2026, Srinivas Kirthy K wrote:
> > >
> > > > Hi,
> > > >
> > > > I'm new to PETSc.
> > > >
> > > > I was able to compile ex50.c using:
> > > > *cd petsc/src/ksp/ksp/tutorials*
> > > > *make ex50*
> > > >
> > > > When I run: *mpiexec -n 1 ./ex50  -da_grid_x 4 -da_grid_y 4
> -mat_view*
> > > >
> > > > I get the error message in *PETSC_mpiexec_error.txt *(attached)
> > > >
> > > > I've defined these in the ~/.bashrc:
> > > >
> > > > *export PETSC_DIR=$HOME/petsc # added on 31/01/2026 to define PETSC
> > > > locationexport PETSC_ARCH=arch-linux-c-debug*
> > > >
> > > > Can you help me fix this?
> > > >
> > > > I've attached the *configure.log* file as well.
> > > >
> > > > Thanks in advance.
> > > >
> > > >
> > >
> > >
> >
> >



-- 
Regards,

Srinivas Kirthy K
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