Hi Dave,
>If you are doing that, then you need to tell fieldsplit to use the Amat to
>define the splits otherwise it will define the Schur compliment as
>S = B22 - B21 inv(B11) B12
>preconditiones with B22, where as what you want is
>S = A22 - A21 inv(A11) A12
>preconditioned with B22.
>If your
Hello,
I am trying to install PETSc with following configure options:
./configure --download-openmpi --download-openblas --download-slepc
--download-cmake --download-metis --download-parmetis
Compilation is done but after the following command, I got an error:
make PETSC_DIR=/home/slurm_local/e
This is slepc.log:
Checking environment... done
Checking PETSc installation...
ERROR: Unable to link with PETSc
ERROR: See "arch-linux2-c-debug/lib/slepc/conf/configure.log" file for
details
Matthew Knepley , 19 Mar 2019 Sal, 13:36 tarihinde şunu
yazdı:
> On Tue, Mar 19, 2019 at 6:31 AM Eda Ok
And what is in $SLEPC_DIR/arch-linux2-c-debug/lib/slepc/conf/configure.log ?
Jose
> El 19 mar 2019, a las 11:41, Eda Oktay via petsc-users
> escribió:
>
> This is slepc.log:
>
> Checking environment... done
> Checking PETSc installation...
> ERROR: Unable to link with PETSc
> ERROR: See "arch
Correction: the correct path is
$PETSC_DIR/$PETSC_ARCH/externalpackages/git.slepc/$PETSC_ARCH/lib/slepc/conf/configure.log
> El 19 mar 2019, a las 11:46, Jose E. Roman via petsc-users
> escribió:
>
> And what is in $SLEPC_DIR/arch-linux2-c-debug/lib/slepc/conf/configure.log ?
> Jose
>
>> El
Starting Configure Run at Tue Mar 19 11:53:05 2019
Configure Options:
--prefix=/home/slurm_local/e200781/petsc-3.10.4/arch-linux2-c-debug
Working directory:
/home/slurm_local/e200781/petsc-3.10.4/arch-linux2-c-debug/ex
Hello Barry,
Thank you for your reply.
I reduced the tolerances and get desired solution.
I am solving a multiphase incompressible n-s problems and currently
we are using augmented lagrangina technique with uzawa iteration.
Because the problems are getting larger, we are also looking for some
o
There seems to be a link problem with PETSc.
Suggest re-configuring without the option --download-slepc
Then, after building PETSc, try 'make check' to make sure that PETSc is built
correctly. Then install SLEPc afterwards.
Jose
> El 19 mar 2019, a las 11:58, Eda Oktay escribió:
>
> ==
Hi Colin,
On Tue, 19 Mar 2019 at 09:33, Cotter, Colin J
wrote:
> Hi Dave,
>
> >If you are doing that, then you need to tell fieldsplit to use the Amat
> to define the splits otherwise it will define the Schur compliment as
> >S = B22 - B21 inv(B11) B12
> >preconditiones with B22, where as what y
Perhaps you need a better preconditioner for it.
Hello Matt,
Thank you for your help.
Yes, I think I need a better preconditioner;
it requires about 600 iterations for Schur complement.
Is there any tutorials for this? Or shall I just
try different combinations and find the most suitable
one?
K
Without slepc, I configured petsc succesfully. Then I installed slepc with
following steps:
export PETSC_ARCH=arch-linux2-c-debug
export PETSC_DIR=/home/slurm_local/e200781/petsc-3.10.4
export SLEPC_DIR=/home/slurm_local/e200781/slepc-3.10.2
cd slepc-3.10.2
./configure
However, I still get the er
What is the output of 'make check' in $PETSC_DIR ?
> El 19 mar 2019, a las 13:02, Eda Oktay escribió:
>
> Without slepc, I configured petsc succesfully. Then I installed slepc with
> following steps:
>
> export PETSC_ARCH=arch-linux2-c-debug
> export PETSC_DIR=/home/slurm_local/e200781/petsc-3
Thanks Matt,
I tried your suggestions to implement DMPlexCreateFromDAG in petsc4py:
1. In petsc4py/src/PETSc/petscdmplex.pxi I uncommented:
int
DMMPlexCreateFromDAG(PetscDM,PetscInt,const_PetscInt[],const_PetscInt[],
const_PetscInt[],const_PetscInt[],const_PetscS
I am sorry for the bad formatting of my createFromDAG function. I attach this
function, and I hope it will be easier to read.
Mar 19, 2019, 12:46 PM by finnkochin...@keemail.me:
> Thanks Matt,
> I tried your suggestions to implement DMPlexCreateFromDAG in petsc4py:
>
>
> 1. In > petsc4py/src/PET
>
>
>
> -fieldsplit_velocity_ksp_type preonly -fieldsplit_velocity_pc_type gamg
> -fieldsplit_pressure_ksp_type minres -fieldsplit_pressure_pc_type none
>
You should use cg for the ksp_type with gamg if you are symmetric and gmres
if not (you can try cg even if it is mildly asymmetric).
minr
Hello team,
Currently we're using the PETSc binary file format to save Vecs and Mats and
visualize them in Matlab. It looks like HDF5 works more efficiently with large
data sets (faster I/O), and we're wondering if PETSc Vecs/Mats saved in HDF5
viewer can be visualized in Matlab as well?
Thank
Got it, thanks!
From: Matthew Knepley
Sent: Tuesday, March 19, 2019 10:10 AM
To: Yuyun Yang
Cc: petsc-users@mcs.anl.gov
Subject: Re: [petsc-users] Saving Vecs/Mats in HDF5 and visualizing in Matlab
On Tue, Mar 19, 2019 at 11:58 AM Yuyun Yang via petsc-users
mailto:petsc-users@mcs.anl.gov>> wro
It's simply for visualization purposes. I wasn't sure if HDF5 would perform
better than binary, and what specific functions are needed to load the PETSc
vectors/matrices, so wanted to ask for some advice here. Since Matt mentioned
it's not likely to be much faster than binary, I guess there is n
Yuyun Yang via petsc-users writes:
> It's simply for visualization purposes. I wasn't sure if HDF5 would perform
> better than binary, and what specific functions are needed to load the PETSc
> vectors/matrices, so wanted to ask for some advice here. Since Matt mentioned
> it's not likely to b
If it is not too complicated it would be nice if MPICreateSubMatricesMPI would be avaible for other matrices than MPIAIJ.
On Mon, Mar 18, 2019 at 10:30 PM Marius Buerkle wrote:
I have another question regarding MatCreateRedundantMatrix and MPICreateSubMatricesMPI.
Sounds good, thanks for the advice!
-Original Message-
From: Jed Brown
Sent: Tuesday, March 19, 2019 1:23 PM
To: Yuyun Yang ; zakaryah ;
petsc-users@mcs.anl.gov
Subject: Re: [petsc-users] Saving Vecs/Mats in HDF5 and visualizing in Matlab
Yuyun Yang via petsc-users writes:
> It's sim
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