The following code prints a vector of uninitialized entries.
ierr = VecCreate(comm,&v);CHKERRQ(ierr);
ierr = VecSetSizes(v,n,n);CHKERRQ(ierr);
ierr = VecSetType(v,VECSEQCUSP);CHKERRQ(ierr);
ierr = VecView(v,PETSC_NULL);CHKERRQ(ierr);
In contrast, if the type is VECSEQ the vector is initia
-
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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Belongs in the FAQ?
Barry
On Nov 8, 2011, at 5:28 AM, Jed Brown wrote:
> On Tue, Nov 8, 2011 at 07:23, wrote:
>
>> Is there any function which compute the condition number of a matrix (MAT)?
>
>
> -pc_type svd -pc_svd_monitor (for very small problems)
>
> -ksp_gmres_restart 1000 -ks
Hi All,
is there a clean way to test if a vector is ghosted (i.e created with
VecCreateGhost?) without trying to call VecGhostGetLocalForm and throwing an
exception?
In 3.1 I got around this using PetscExceptonTry1 but apparently in 3.2 and
dev PetscException? is "too cool for school" ;^)
Nevermind?I should always think for 10 more minutes before I type?
Just want to check that the following is a kosher use of the return error
handler
bool _is_ghosted = true;
PetscErrorCode ierr;
PetscPushErrorHandler(PetscReturnErrorHandler,PETSC_NULL);
ierr= VecGhostGetLocalForm
columbia.edu/~mspieg
> tel: 845 704 2323 (SkypeIn)
>
>
>
>
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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);
ierr = PetscObjectReference((PetscObject)*l);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
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We should add a VecIsGhosted()
Barry
On Nov 8, 2011, at 12:07 PM, Jed Brown wrote:
> On Tue, Nov 8, 2011 at 14:05, Matthew Knepley wrote:
> Just want to check that the following is a kosher use of the return error
> handler
>
>bool _is_ghosted = true;
>PetscErrorCode ierr;
>
Thanks everyone for getting back so fast (as usual).
VecIsGhosted would be nice?
I assume that would go into dev?
In the meantime, I think the error handler trick will work in 3.2?
thanks
marc
On Nov 8, 2011, at 3:41 PM, Barry Smith wrote:
>
> We should add a VecIsGhosted()
>
> Barry
>
ts with
multigrid (or any other case where you have multiple instances of shell
objects, breaking the common blocks.)
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On Tue, 8 Nov 2011, Jed Brown wrote:
> We have bindings for this, but I can't find a way to make it work. I can
> pass a context into a function, but I can't get one back out with a
> subroutine call. F90 pointers are grotesque creatures that don't seem to be
> up to this task either, at least not
On Nov 8, 2011, at 8:57 PM, Jed Brown wrote:
> We have bindings for this, but I can't find a way to make it work. I can pass
> a context into a function, but I can't get one back out with a subroutine
> call. F90 pointers are grotesque creatures that don't seem to be up to this
> task either,
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