dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

A bug is now registered. Not sure what to do with it as the original problem I 
have is now "fixed". It looks like the problem is that it is not that easy to 
initialize an empty EpetraFECrsMatrix. I could at least not figure it out from 
their documentation.

Johan

On Saturday August 6 2011 02:38:16 Garth N. Wells wrote:
> On 06/08/11 03:25, Johan Hake wrote:
> > Here is a minimal script reproducing the bug
> 
> Could you register a bug?
> 
> Garth
> 
> > Johan
> > 
> > On Saturday August 6 2011 00:14:40 Johan Hake wrote:
> >> It looks like there is something going on with the assignment to an
> >> empty EpetraMatrix. When the Epetra_FECrsMatrix::operator= was called
> >> on an uninitialized object an assertion kicked in. Bug or feature on
> >> the Epetra side?
> >> 
> >> If it is possible we should probably initialize the Epetra_FECrsMatrix
> >> when an empty EpetraMatrix is created hopefull avoiding this.
> >> 
> >> For now I use the copy constructor of Epetra_FECrsMatrix that initialize
> >> the structures correctly before it uses the
> >> Epetra_FECrsMatrix::operator=. Then I just assign the newly copied
> >> Epetra_FECrsMatrix to the
> >> EpetraMatrix.
> >> 
> >> Johan
> >> 
> >> On Friday August 5 2011 21:24:52 Johan Hake wrote:
> >>> On Friday August 5 2011 13:26:52 Garth N. Wells wrote:
> >>>> On Aug 5 2011, Johan Hake wrote:
> >>>>> You are right. I will look at it this weekend.
> >>>>> 
> >>>>> However, it "fixed" my problem with Epetra backend and Nonlinear
> >>>>> problem where I used the assignment operator when generating the
> >>>>> Jacobian.
> >>>> 
> >>>> Can you post some simple code to test against?
> >>> 
> >>> Attached is a slightly modified version of the Cahn-hillard demo.
> >>> 
> >>> Johan
> >>> 
> >>>> Garth
> >>>> 
> >>>>> Johan
> >>>>> 
> >>>>> On Aug 5, 2011, at 7:24, "Garth N. Wells" <gnw20@xxxxxxxxx> wrote:
> >>>>>> This doesn't look right. Looks like a shallow copy.
> >>>>>> 
> >>>>>> Garth
> >>>>>> 
> >>>>>> On 04/08/11 00:02, noreply@xxxxxxxxxxxxx wrote:
> >>>>>>> ------------------------------------------------------------
> >>>>>>> revno: 6069
> >>>>>>> committer: Johan Hake <hake.dev@xxxxxxxxx>
> >>>>>>> branch nick: work
> >>>>>>> timestamp: Wed 2011-08-03 20:58:24 -0700
> >>>>>>> 
> >>>>>>> message:
> >>>>>>>  Fix a bug in the assignment operator of EpetraMatrix
> >>>>>>> 
> >>>>>>> modified:
> >>>>>>>  dolfin/la/EpetraMatrix.cpp
> >>>>>>> 
> >>>>>>> --
> >>>>>>> lp:dolfin
> >>>>>>> https://code.launchpad.net/~dolfin-core/dolfin/main
> >>>>>>> 
> >>>>>>> Your team DOLFIN Core Team is subscribed to branch lp:dolfin. To
> >>>>>>> unsubscribe from this branch go to
> >>>>>>> https://code.launchpad.net/~dolfin-core/dolfin/main/+edit-subscript
> >>>>>>> io n
> >>>>>> 
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> >> 
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