Re: [Libmesh-users] Using installed petsc version.

[Vijay S. M. <vi...@gm...>]

Okay, I finally got this working without any other changes. The
linking problem was with my slepc installation apparently. The slepc
source worked fine but its installation was somehow messed up. After
fixing those, and reconfiguring libmesh, everything went through
smoothly.

I still had to remove PETSC_ARCH value though in order to proceed.
Derek, looking at Make.common, I dont understand how you did not get
any errors. The libmesh_INCLUDE, PETSC_LIB variables uses a PETSC_ARCH
and with a bogus value, this should not be able to find the right
directory. Am I wrong ?

Vijay

On Sun, Apr 10, 2011 at 7:10 PM, Derek Gaston <fri...@gm...> wrote:
> Ah - I wasn't using SLEPC... so I'm sure that's the difference.  I didn't have to modify Make.common at all... just set a dummy value for PETSC_ARCH (I'm using an installed Petsc 3.1 here for reference).
>
> Derek
>
> On Apr 10, 2011, at 6:09 PM, Vijay S. Mahadevan wrote:
>
>> Derek, I had to remove the PETSC_ARCH value for it to compile. Did you
>> make any other changes in Make.common ?
>>
>> Also, the compilation succeeded but the linking failed because it
>> could not find the slepc library. I am looking into the problem now.
>>
>> Vijay
>>
>> On Sun, Apr 10, 2011 at 7:06 PM, Derek Gaston <fri...@gm...> wrote:
>>> Weird... I just did this earlier today and didn't have any trouble... I set PETSC_ARCH to "junk"...
>>>
>>> What did you modify in Make.common?
>>>
>>> Derek
>>>
>>> On Apr 10, 2011, at 5:37 PM, Vijay S. Mahadevan wrote:
>>>
>>>> Just an update. "Make" came back to bite me because of my arbitrary
>>>> PETSC_ARCH. I had to change Make.common to make this work..
>>>>
>>>> Vijay
>>>>
>>>> On Sun, Apr 10, 2011 at 6:29 PM, Vijay S. Mahadevan <vi...@gm...> wrote:
>>>>> John,
>>>>>
>>>>> Interestingly that worked ! And for now, I can definitely live with that.
>>>>>
>>>>> In the long run, it does feel like a hack. But it actually reminds me
>>>>> that slepc configure has the same problem when using an installed
>>>>> version of petsc. There, you need to specify
>>>>> PETSC_ARCH="installed-petsc" for configure to go through. Just drawing
>>>>> parallels..
>>>>>
>>>>> Anyway thanks for the quick reply.
>>>>> Vijay
>>>>>
>>>>> On Sun, Apr 10, 2011 at 6:23 PM, John Peterson
>>>>> <pet...@cf...> wrote:
>>>>>> On Sun, Apr 10, 2011 at 4:14 PM, Vijay S. Mahadevan <vi...@gm...> wrote:
>>>>>>> All,
>>>>>>>
>>>>>>> While trying to configure libMesh with installed version of petsc and
>>>>>>> slepc, the configure fails. My configure command is
>>>>>>>
>>>>>>> ./configure --enable-shared=yes --enable-everything
>>>>>>> --enable-2D-only=no --with-cc=icc --with-cxx=icpc --with-fc=ifort
>>>>>>> --enable-petsc  --enable-slepc --enable-pfem --enable-xdr
>>>>>>> --enable-perflog --enable-gzstreams --enable-metis --enable-parmetis
>>>>>>> --enable-tetgen --enable-triangle --enable-gmv -enable-netcdf=no
>>>>>>> --enable-hilbert=no -enable-exodus=no --enable-laspack
>>>>>>> --enable-tracefiles --enable-exceptions --enable-amr
>>>>>>>
>>>>>>> The error message on stdout is
>>>>>>>
>>>>>>> checking for /opt/petsc-opt/include/petsc.h... yes
>>>>>>> <<< PETSc disabled.  Please set your "$PETSC_ARCH" environment
>>>>>>> variable correctly. >>>
>>>>>>
>>>>>> In PETSc 2.x days, we used to give up on trying to configure PETSc if
>>>>>> the user's PETSC_ARCH was not set.
>>>>>>
>>>>>> Since PETSC_ARCH is no longer needed in PETSc 3, this configure test
>>>>>> needs to be updated.
>>>>>>
>>>>>> It should work fine if you just set PETSC_ARCH to something, anything
>>>>>> other than the empty string really.
>>>>>>
>>>>>> If that still doesn't work let us know.
>>>>>>
>>>>>> --
>>>>>> John
>>>>>>
>>>>>
>>>>
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>>>
>
>