Hi, dealii devs and users
I have been using the dealii Trilinos API of ML to generate an AMG
preconditioner for MPI distributed sparse system matrix quite a while. It
roubustely works for most computing of a damped Newton method on clusters.
However, casually the linear solver of Newton update ve
hi, praveen
I think spack did cause something went wrong, building deal.ii with cgal
without spack may be a good way.
bset,
Tim
On Fri, Jan 5, 2024 at 4:25 PM Praveen C
wrote:
> So this error
>
> On 05-Jan-2024, at 7:28 PM, Praveen C wrote:
>
> [100%] Built target step-1
> $ ./step-1
> step-1
ternal boost if I disable cgal.
>
> Thanks
> praveen
>
> On 05-Jan-2024, at 3:11 PM, timo Hyvärinen
> wrote:
>
> hi, praveen
>
> Did you check which Boost deal.ii was built from? The external one or
> bundled one? If deal.ii didn't detect what "DBOOST_DI
hi, praveen
Did you check which Boost deal.ii was built from? The external one or
bundled one? If deal.ii didn't detect what "DBOOST_DIR=`spack location -i
boost` " is provided, then bundled Boost will be built.
If this happens, according to " CGAL requires C++17 and an externally
configured Boos
hi, paraveen
I think
-DCGAL_DIR="/home/spack/opt/spack/linux-opensuse15-broadwell/gcc-12.3.0/cgal-5.5.2-6umjskepmayihkexoscjiovjmtgo5toy"
will be better if spack location -i cgal return the library dictionary
i.e., it contains include/, lib/.
I'm not sure if shell evaluation (`` or $()) would be
Dear deal.ii developers and user community,
Happy New Year! 🎊
I'm trying to split source code into different directories following to
this documentation
https://www.dealii.org/current/users/cmake_user.html
Unfortunately, I keep getting the following error in linking step between
libmylib.a and m
Bangerth
wrote:
> On 10/2/23 00:46, timo Hyvärinen wrote:
> > (I) How to make the program run faster through Valgrind profiling? I
> know I
> > should use cachegrind and callgrind, but I don't know is what things I
> should
> > pay attention to from cachegrind/ca
sin
wrote:
> Tim,
>
> Valgrind is great but it is always slow. Instead you can use the
> AddressSanitizer from clang or gcc. It's much faster than Valgrind but I
> find the output is harder to read.
>
> Best,
>
> Bruno
>
> Le lun. 2 oct. 2023 à 02:47, timo Hyvär
Hi, Bruno,
Thank you for your insightful and significant reply with the PR link.
Assembly by GPU is still undergoing! This certainly is my most wished-for
feature.😀
If currently the GPU is used for linear solver, then I think Kokkos
leverage will be more natural for Trilinos ML library and Trili
Hi, deal community and developers,
Thank you for all the help I ever got from you guys.
I'm developing a MPI vector-valued non-linear PDEs solver. The way I chose
is dumping newton iteration, which uses AMG preconditioner support from
Trilinos 12.18 for linear solver. Currently, the program is CP
llo Wolfgang,
> How are you doing today?
>
> Well your question is not quite clear.
> So what exactly do you want to know?
>
> On Sun, Oct 1, 2023 at 3:40 PM Wolfgang Bangerth
> wrote:
>
>> On 9/30/23 02:01, timo Hyvärinen wrote:
>> >
>> > So my q
: 7,738,278 allocs, 7,717,607 frees,
9,563,207,155 bytes allocated
"
I'm not sure if the mpi-valgrind suppress ever works, but there are about
10M leaks for one task.
Tim,
Sincerely
On Mon, Oct 2, 2023 at 1:40 AM Wolfgang Bangerth
wrote:
> On 9/30/23 02:01, timo Hyvärinen wrote:
>
want the debug
> info. Without it, the information given by the profiler usually makes
> little sense. So you compile in release mode but you use the following
> option when configuring your deal.II "-DCMAKE_CXX_FLAGS=-g"
>
> Best,
>
> Bruno
>
> Le sam. 16 sept.
Hi Bruno,
Thank you for your explanations.
Seemingly, I should compile an optimized lib then do profiling.
Sincerely,
Timo
On Fri, Sep 15, 2023 at 11:04 PM Bruno Turcksin
wrote:
> Timo,
>
> You will get vastly different results in debug and release modes for two
> reasons. First, the compiler
hi, Marc,
Thank you for the reply.
I compiled the lib with debug mode, didn't try the optimized version.
I didn't think this could be a significant issue, but I infer optimized lib
could improve performance alot based on your question.
Sincerely,
Timo
On Fri, Sep 15, 2023 at 8:21 PM Marc Fehlin
e thread, but I
believe it should be a significant experience. I will do profiling first
and then talk in this thread later.
Sincerely,
Timo
On Fri, Sep 15, 2023 at 3:51 PM Wolfgang Bangerth
wrote:
> On 9/15/23 03:17, timo Hyvärinen wrote:
> >
> > So here is my question, which tut
Dear dealii community and developers,
I have used dealii framework (9.3.x) a while on HPC machine. My project
involves solving vector-valued nonlinear PDE with nine components.
Currently, I've implemented damping newton iteration with GMRES+AMG
preconditioner with MPI on distributed memory archite
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