[petsc-users] petsc-users Digest, Vol 16, Issue 23

[Barry Smith]

On Apr 19, 2010, at 4:28 PM, Li, Zhisong (lizs) wrote:

> Hi, Jed
>
> Yes, I did have "--download-mpich=1" when I installed PETSc.  To use  
> "--with-mpi-dir=/path/to/system/mpi ?", Do you mean I should  
> reinstall PETSc with this option or add this as a run command  
> option? It seems it's not recognized as a run command option.
>
> Anyway, this should be a fundamental issue running PETSc. Why  
> doesn't it happen to many other users? On machines of Ohio  
> supercomputer center, I could not easily install any software for  
> myself. I can only upload my complied executable and run it there  
> using their default MPI setup.

     Then you need to compile it using their "default MPI setup" and  
you cannot use --download-mpich

     Likely they provide a mpicc and mpicxx and mpif90 that are used  
to compile programs there. You should run ./configure with the options  
--with-cc=mpicc  --with-cxx=mpicxx --with-fc=mpif90 making sure that  
the mpicc, mpicxx and mpif90 are in your path.

    Barry

>
>
> Thanks,
>
> Zhisong Li
>
> ________________________________________
> From: Jed Brown [five9a2 at gmail.com] on behalf of Jed Brown [jed at 59A2.org 
> ]
> Sent: Monday, April 19, 2010 4:12 PM
> To: Li, Zhisong (lizs); petsc-users at mcs.anl.gov
> Subject: Re: [petsc-users] petsc-users Digest, Vol 16, Issue 23
>
> On Mon, 19 Apr 2010 20:05:06 +0000, "Li, Zhisong (lizs)" <lizs at mail.uc.edu 
> > wrote:
>> Mat and Jed,
>>
>> Thank you for your reply.
>>
>> As far as I remembered, the make test was successful except the  
>> Fortran complier, but I only use C for my work.
>>
>> I tried " $ cd src/snes/examples/tutorials && make -n ex5" and it  
>> shows: /home/lizs/petsc/linux-gnu-c-debug/bin/mpicc  ex5.c  -o  ex5
>
> Looks like configure has built an MPI for you.  Did you use
> --download-mpich ?
>
>> All the machines have mpi package installed before I got to touch
>> PETSc.
>
> Maybe you wanted to use --with-mpi-dir=/path/to/system/mpi ?
>
>
>
> Jed