f specifying everything in terms of local indices, though it
> could be implemented.
>
> "Garth N. Wells" <gn...@cam.ac.uk> writes:
>
> > Should MatZeroRowsColumnsLocal work for matrices of type MATNEST?
> >
> > Garth
>
Should MatZeroRowsColumnsLocal work for matrices of type MATNEST?
Garth
0
> [0]PETSC ERROR: ./ex56 on a arch-macosx-gnu-g named MarksMac-5.local by
> markadams Wed Apr 26 17:46:28 2017
> [0]PETSC ERROR: Configure options --with-cc=clang --with-cc++=clang++
> COPTFLAGS="-g -O0 -mavx2" CXXOPTFLAGS="-g -O0 -mavx2" F
>
>
> On Thu, A
hase of
> the communication for each V cycle since every process has the entire
> solution it just grabs from itself the values it needs without communication.
>
>
>
>
>> On Apr 26, 2017, at 5:25 PM, Garth N. Wells <gn...@cam.ac.uk> wrote:
>>
>> I'm a bit c
On 26 April 2017 at 09:06, Lisandro Dalcin <dalc...@gmail.com> wrote:
> On 25 April 2017 at 19:48, Garth N. Wells <gn...@cam.ac.uk> wrote:
>> I'm seeing some behaviour with bool types in petsc4py that I didn't
>> expect. In the Python interface, returned Booleans ha
I'm seeing some behaviour with bool types in petsc4py that I didn't
expect. In the Python interface, returned Booleans have type '', where I expected them to have type ' '. Below
program illustrates issue. Seems to be related to bint in cython. Am I
doing something wrong?
Garth
from petsc4py
to the patched version of PETSc.
Will the patch find its way into the dev version?
Garth
Barry
On Jun 17, 2015, at 12:59 PM, Garth N. Wells gn...@cam.ac.uk wrote:
On 17 June 2015 at 15:43, Barry Smith bsm...@mcs.anl.gov wrote:
I introduced a bug in my cleanup. The kspest eigenestimator
me know how it goes.
I've applied the patch, but I still can't change the Krylov method for
estimating the eigenvalues.
Garth
Barry
On Jun 17, 2015, at 6:24 AM, Garth N. Wells gn...@cam.ac.uk wrote:
It used to be possible to pick the Krylov solver used to estimate the
eigenvalues
It used to be possible to pick the Krylov solver used to estimate the
eigenvalues for Chebyshev, via the parameter system
(mg_levels_est_ksp_type and gamg_est_ksp_type). I know there was
some clean-up, with the parameters becoming
mg_levels_ksp_chebyshev_esteig_foo, but an option to pick the
I’m using VecGhostGetLocalForm to test whether or not a vector has ghost
values. Is there any overhead associated with calling VecGhostGetLocalForm that
I should be concerned about?
Garth
Is there are command line option to set the number of iterations used
for the eigenvalue estimation inside the Chebyshev preconditioner?
-gamg_est_ksp_max_it does the trick with GAMG, but I'd also like to
change the number of iterations when using Chebyshev smoothing with ML.
Garth
On 2014-01-23 14:32, Matthew Knepley wrote:
On Thu, Jan 23, 2014 at 5:35 AM, Garth N. Wells gn...@cam.ac.uk
wrote:
Is there are command line option to set the number of iterations
used for the eigenvalue estimation inside the Chebyshev
preconditioner? -gamg_est_ksp_max_it does the trick
was looking for and I can confirm that they
work as expected.
It would be helpful is last two options could be (easily) found in the
docs - I couldn't find them.
Garth
Cheers,
Dave
On 23 January 2014 15:49, Garth N. Wells gn...@cam.ac.uk wrote:
On 2014-01-23 14:32, Matthew Knepley wrote
On 19 August 2013 14:03, Matthew Knepley knep...@gmail.com wrote:
On Mon, Aug 19, 2013 at 7:40 AM, Jed Brown jedbr...@mcs.anl.gov wrote:
Garth N. Wells gn...@cam.ac.uk writes:
I'm using PCFIELDSPLIT for a mixed problem, with fields indicated via
an index set (using PCFieldSplitSetIS). I'd
On 20 August 2013 19:14, Matthew Knepley knep...@gmail.com wrote:
On Tue, Aug 20, 2013 at 12:50 PM, Garth N. Wells gn...@cam.ac.uk wrote:
On 19 August 2013 14:03, Matthew Knepley knep...@gmail.com wrote:
On Mon, Aug 19, 2013 at 7:40 AM, Jed Brown jedbr...@mcs.anl.gov wrote:
Garth N. Wells
I'm using PCFIELDSPLIT for a mixed problem, with fields indicated via
an index set (using PCFieldSplitSetIS). I'd like to attach an
approximate null space to the A00 block of the system. Is there a way
to attach the null space to one block?
Garth
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