Barry, Thanks so much for your explanation. It helps me a lot.
On Mon, Oct 10, 2016 at 4:00 PM, Barry Smith wrote:
>
> > On Oct 10, 2016, at 4:01 PM, Kong, Fande wrote:
> >
> > Hi All,
> >
> > I know how to remove the null spaces from a singular system
Valgrind immediately detects interesting stuff:
==25673== Use of uninitialised value of size 8
==25673==at 0x178272C: static_schedule (static_schedule.c:960)
==25674== Use of uninitialised value of size 8
==25674==at 0x178272C: static_schedule (static_schedule.c:960)
==25674==by
On 10/10/2016 07:11 PM, Satish Balay wrote:
Thats from petsc-3.5
Anton - please post the stack trace you get with
--download-superlu_dist-commit=origin/maint
I guess this is it:
[0]PETSC ERROR: [0] SuperLU_DIST:pdgssvx line 421
Hi everybody-
Figured I’d ask this here before I go reinventing the wheel.
I’m writing an autoconf installer (the standard Linux configure/make package)
for an acoustic wave propagation modeling package that builds PETSc and SLEPc
as part of the installation process. I’d like to be able to
Barry,
Subsequent tests with the same code and a problem (input) having a much
smaller vertex (equation) count (i.e. a much smaller matrix to invert for
the solution) have NOT had PetscCommDuplicate() account for any significant
time, so I'm not surprised that your test didn't find any problem.
On 10/11/16 7:44 PM, Barry Smith wrote:
You can run your code with -ksp_view_mat binary -ksp_view_rhs binary this
will cause it to save the matrices and right hand sides to the linear systems
in a file called binaryoutput, then email the file to petsc-ma...@mcs.anl.gov
(don't worry this
On Tue, 11 Oct 2016, Anton wrote:
>
>
> On 10/11/16 7:44 PM, Barry Smith wrote:
> > You can run your code with -ksp_view_mat binary -ksp_view_rhs binary
> > this will cause it to save the matrices and right hand sides to the
> > linear systems in a file called binaryoutput, then
On 10/11/16 7:19 PM, Satish Balay wrote:
This log looks truncated. Are there any valgrind mesages before this?
[like from your application code - or from MPI]
Yes it is indeed truncated. I only included relevant messages.
Perhaps you can send the complete log - with:
valgrind -q
Matthew Overholt writes:
> Barry,
>
> Subsequent tests with the same code and a problem (input) having a much
> smaller vertex (equation) count (i.e. a much smaller matrix to invert for
> the solution) have NOT had PetscCommDuplicate() account for any significant
> time, so
On Tue, Oct 11, 2016 at 10:39 AM, Barry Smith wrote:
>
> > On Oct 11, 2016, at 9:33 AM, Kong, Fande wrote:
> >
> > Barry, Thanks so much for your explanation. It helps me a lot.
> >
> > On Mon, Oct 10, 2016 at 4:00 PM, Barry Smith
> On Oct 11, 2016, at 9:33 AM, Kong, Fande wrote:
>
> Barry, Thanks so much for your explanation. It helps me a lot.
>
> On Mon, Oct 10, 2016 at 4:00 PM, Barry Smith wrote:
>
> > On Oct 10, 2016, at 4:01 PM, Kong, Fande wrote:
> >
You can run your code with -ksp_view_mat binary -ksp_view_rhs binary this
will cause it to save the matrices and right hand sides to the linear systems
in a file called binaryoutput, then email the file to petsc-ma...@mcs.anl.gov
(don't worry this email address accepts large attachments).
This log looks truncated. Are there any valgrind mesages before this?
[like from your application code - or from MPI]
Perhaps you can send the complete log - with:
valgrind -q --tool=memcheck --leak-check=yes --num-callers=20
--track-origins=yes
[and if there were more valgrind messages from
Barry,
I am trying to reproduce this issue using a pure PETSc code. VecLoad does
not work for me. I do not know why. Anyway, I can reproduce this using a
very small system. Here are some info:
Mat, A
Mat Object:() 2 MPI processes
type: mpiaij
row 0: (0, 1.)
row 1: (0, -0.820827) (1, 1.51669)
Fande,
Could you send me (petsc-ma...@mcs.anl.gov) a non symmetric matrix you
have that has a different null space for A and A'. This would be one that is
failing with right preconditioning. Smaller the better but whatever size you
have. Run the code with -ksp_view_mat binary and send
On Tue, Oct 11, 2016 at 12:18 PM, Barry Smith wrote:
>
> > On Oct 11, 2016, at 12:01 PM, Kong, Fande wrote:
> >
> >
> >
> > On Tue, Oct 11, 2016 at 10:39 AM, Barry Smith
> wrote:
> >
> > > On Oct 11, 2016, at 9:33 AM, Kong, Fande
You don't want to get the debug mode from PETSC_ARCH since there may not be
a PETSC_ARCH (for PETSc --prefix installs) or because the user did not put the
string in it. You can check for the PETSC_USE_DEBUG symbol in the petscconf.h
file by linking a C program against and #if
17 matches
Mail list logo