[petsc-users] Expecting Explanation

[Fazlul Huq]

I think when I have installed PETSc, I did --download-mpich.
How can I correct it? Shall I install PETSc again?

Thanks.
Sincerely,
Huq

On Sat, Nov 17, 2018 at 4:53 PM Smith, Barry F. <bsmith at mcs.anl.gov> wrote:

>
>
> > On Nov 17, 2018, at 3:51 PM, Fazlul Huq via petsc-users <
> petsc-users at mcs.anl.gov> wrote:
> >
> > Thanks for the answer.
> >
> > So, when I run the code with "mpiexec -n 2 ./ex6" or "mpiexec -n 4
> ./ex6" shouldn't it spit out
> > the error "This is a uniprocessor example only!"?
> > But it didn't do that rather run the code 2/4 times.
>
>    This can happen if you use the "wrong" mpiexec; that is a different
> mpiexec than the one associated with the mpi you built PETSc with. For
> example if some mpiexec is in your path and you used ./configure
> --download-mpich
>
>    Barry
>
>
> >
> > Thanks.
> > Sincerely,
> > Huq
> >
> > On Sat, Nov 17, 2018 at 1:12 PM Fazlul Huq <huq2090 at gmail.com> wrote:
> > Hello PETSc developers,
> >
> > In example 6 or vec section I don't understand this line:
> > if (size != 1) SETERRQ(PETSC_COMM_SELF,1,"This is a uniprocessor example
> only!");
> >
> > I tried to run the code with "mpiexec -n 2 ./ex6" or "mpiexec -n 4
> ./ex6" or even "mpiexec -n 1 ./ex6" it the code runs properly.
> >
> > Thanks.
> >
> > Sincerely,
> > Huq
> >
> > --
> >
> > Fazlul Huq
> > Graduate Research Assistant
> > Department of Nuclear, Plasma & Radiological Engineering (NPRE)
> > University of Illinois at Urbana-Champaign (UIUC)
> > E-mail: huq2090 at gmail.com
> >
> >
> > --
> >
> > Fazlul Huq
> > Graduate Research Assistant
> > Department of Nuclear, Plasma & Radiological Engineering (NPRE)
> > University of Illinois at Urbana-Champaign (UIUC)
> > E-mail: huq2090 at gmail.com
>
>

-- 

Fazlul Huq
Graduate Research Assistant
Department of Nuclear, Plasma & Radiological Engineering (NPRE)
University of Illinois at Urbana-Champaign (UIUC)
E-mail: huq2090 at gmail.com
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