[Developers] Need a Working BAM_Elliptic and EllPETSc

[Erik Schnetter]

On Mar 6, 2007, at 12:52:49, Zach Etienne wrote:

> Hello.
>
> We (the Illinois group) need an elliptic solver in Cactus.  Thus  
> far, we have found that with our version of Cactus+AEIThorns  
> (latest publicly available CVS from cactuscode.org and  
> cvs.aei.mpg.de) neither BAM_Elliptic nor EllPETSc will work  
> properly.  Ideally, we would like to use either.

Hi Zach,

I'm sorry to hear you have problems.

> I've detailed our problems with these two thorns in the below  
> sections.
>
> -= BAM_Elliptic Problems =-
> BAM_Elliptic compiles just fine, but when I try to run it, it gives:
> WARNING level 0 in thorn BAM_Elliptic processor 0
>   (line 294 of /.../Cactus/configs/.../build/BAM_Elliptic/ 
> Cactus4_utils.c):
>   -> BAM requires PUGH::processor_topology to be set to "manual" or  
> "automatic_old"
> When I do what the warning suggests, I get a segfault (when  
> attempting to set the topology to manual) or "Range error setting  
> parameter 'PUGH::processor_topology' to 'automatic_old'" (when  
> attempting to set the topology to automatic_old).  Looking at the  
> source code, I conclude that this problem appears to be caused by a  
> bugfix inside BAM_Elliptic/src/Cactus4_utils.c.
>
> Cry for help:
> Does anyone have a version of BAM_Elliptic that does not have this  
> issue with the latest PUGH?

Are you using the development version of Cactus, or the stable  
release?  See <http://www.cactuscode.org/Toolkit/getcactus> for the  
distinction.

> -= EllPETSc Problems =-
> Apparently the PETSc API has changed since the current CVS version  
> of EllPETSc was written.  With the latest version of PETSc  
> (petsc-2.3.2-p8), EllPETSc will not even compile, giving the error:
> /.../Cactus/configs/.../build/EllPETSc/petsc_confmetric_solver.c 
> (1046): error #165: too few arguments in function call
>     ierr = SLESSolve(sles,b,soln,&its); CHKERRQ(ierr);
>
> Cry for help:
> Does anyone have a version of EllPETSc that works with the latest  
> version of Cactus?  At the very least, does anyone know what  
> version of PETSc EllPETSc was designed to work with?

The PETSc interface changes quite often.  I recently committed a  
change to the development version of Cactus that should make EllPETSc  
work with PETSc 2.3.2.  Are you using the stable release of Cactus or  
the development version?  Can you try the development version?

EllPETSc should work with PETSc 2.2.x.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

My email is as private as my paper mail.  I therefore support encrypting
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