Hi Barry,
Thanks for the piece of code. I will try to implement it. My problem is 1D,
so should be ok. If I have some pb I'll let you know.
If this work, do you plan to include it in next version of PETSc ?
Christophe
On Mon, Sep 30, 2013 at 2:04 PM, Barry Smith bsm...@mcs.anl.gov wrote:
On
On Oct 1, 2013, at 2:18 AM, Christophe Ortiz christophe.or...@ciemat.es wrote:
Hi Barry,
Thanks for the piece of code. I will try to implement it. My problem is 1D,
so should be ok. If I have some pb I'll let you know.
If this work, do you plan to include it in next version of PETSc ?
Barry Smith bsm...@mcs.anl.gov writes:
I put the example with VecGetArray() into petsc-dev and if you send
me one with DMDAVecGetArray() I'll add that as well. Since the
derived type has to appear explicitly in the code I can't put
something in the library only in examples that
On Tue, Oct 1, 2013 at 2:01 PM, Jed Brown jedbr...@mcs.anl.gov wrote:
Barry Smith bsm...@mcs.anl.gov writes:
I put the example with VecGetArray() into petsc-dev and if you send
me one with DMDAVecGetArray() I'll add that as well. Since the
derived type has to appear explicitly in
I doubt very much that the ISO C bindings allow one to pass a Fortran
pointer through a C function which is what we need to do so I'd be surprised if
the ISO C bindings will save the day. But you are welcome to try.
Barry
On Oct 1, 2013, at 7:01 AM, Jed Brown jedbr...@mcs.anl.gov
Dear all,
I guess MatCreateSchurComplement is somehow broken in PETSc 3.4.2
Attached is the modified ex23 from src/ksp/ksp/examples/tutorials
I just copied system matrix three times and created a Schur complement
object.
However mpirun -n 4 ./ex23 gives: Unknown Mat type given:
Anton Popov po...@uni-mainz.de writes:
Dear all,
I guess MatCreateSchurComplement is somehow broken in PETSc 3.4.2
You can fix it by calling KSPMatRegisterAll() before
MatCreateSchurComplement, and the issue is now fixed in 'maint' (it was
accidentally only fixed in 'master').
This problem
On 10/1/13 9:45 PM, Jed Brown wrote:
Anton Popov po...@uni-mainz.de writes:
Dear all,
I guess MatCreateSchurComplement is somehow broken in PETSc 3.4.2
You can fix it by calling KSPMatRegisterAll() before
MatCreateSchurComplement,
Thanks, Jed. It solves the problem.
and the issue is now
Dear Petsc Developers,
Hello.
I am wondering whether I can multiply MATELEMENTAL and MATAIJ matrices. If I
cannot multiply those, could you build the multiplication?
Thank you.
Joon
- Original Message -
From: Joon Hee Choi choi...@purdue.edu
To: Jack Poulson poul...@stanford.edu
Cc:
Joon Hee Choi choi...@purdue.edu writes:
Dear Petsc Developers,
Hello.
I am wondering whether I can multiply MATELEMENTAL and MATAIJ matrices. If I
cannot multiply those, could you build the multiplication?
What are the dimensions of the matrices?
Jack, does Clique support multiplication
Hello all,
I am trying to compile 64 bit version of petsc-3.4.2 using MinGW-w64
(latest version 4.8.1 installed with
http://sourceforge.net/projects/mingwbuilds/files/mingw-builds-install/mingw-builds-install.exe/download)
on Windows 7 64 bit. I have cygwin, python (under cygwin) installed.
Looks like this mingw install is not from cygwin - and does not work with
cygwin paths.
Suggest using mingw from cygwin - or install and use cygwin64 [which has
non-mingw gcc-64]
You might need the following patch
mingw64 from cygwin[32] appears to work fine with /tmp.
Satish
balay@msnehalem2 ~/junk
$ which x86_64-w64-mingw32-gcc.exe
/usr/bin/x86_64-w64-mingw32-gcc.exe
balay@msnehalem2 ~/junk
$ cygcheck -f /usr/bin/x86_64-w64-mingw32-gcc.exe
mingw64-x86_64-gcc-core-4.7.3-1
balay@msnehalem2
Hi
I am wondering whether I can multiply MATELEMENTAL and MATAIJ
matrices. If I cannot multiply those, could you build the
multiplication?
What are the dimensions of the matrices?
Jack, does Clique support multiplication of sparse matrices with
[MC,MR] dense matrices?
The dense
On 10/01/2013 03:04 PM, S V N Vishwanathan wrote:
Hi
I am wondering whether I can multiply MATELEMENTAL and MATAIJ
matrices. If I cannot multiply those, could you build the
multiplication?
What are the dimensions of the matrices?
Jack, does Clique support multiplication of sparse
Hi guys,
I have two ghosted vectors fxx, fyy which should store derivatives of
a quantity f. They are both obtained via calling VecDuplicate on f. To
minimize communications when computing both fxx and fyy I do the
following:
// loop over boundary points and compute fxx and fyy
- Original Message -
From: Jack Poulson poul...@stanford.edu
To: d...@libelemental.org, Jed Brown jedbr...@mcs.anl.gov
Cc: Joon Hee Choi choi...@purdue.edu, Hong Zhang hzh...@mcs.anl.gov,
PETSc users list petsc-users@mcs.anl.gov
Sent: Tuesday, October 1, 2013 6:15:23 PM
Subject: Re:
Mohammad Mirzadeh mirza...@gmail.com writes:
I assume I'm getting this since they somehow share a VecScatter
internally because of VecDuplicate? If so how can I fix this?
Hmm, there is no VecScatterDuplicate so I think you'd have to make the
vectors independently.
Also as a side question, if
S V N Vishwanathan vi...@stat.purdue.edu writes:
Hi
I am wondering whether I can multiply MATELEMENTAL and MATAIJ
matrices. If I cannot multiply those, could you build the
multiplication?
What are the dimensions of the matrices?
Jack, does Clique support multiplication of sparse
Joon Hee Choi choi...@purdue.edu writes:
- Original Message -
From: Jack Poulson poul...@stanford.edu
To: d...@libelemental.org, Jed Brown jedbr...@mcs.anl.gov
Cc: Joon Hee Choi choi...@purdue.edu, Hong Zhang hzh...@mcs.anl.gov,
PETSc users list petsc-users@mcs.anl.gov
Sent:
It would be half the messages. Why are these vectors separate in the
first place?
I had not worked with block vectors before so just convenience i
guess! When working with blocked vectors, how are items stored? Is it
like fxx[0], fyy[0], fxx[1], fyy[1], ... or is it like
On Wed, 1 Sep 2010 20:54:54 +, Li, Zhisong (lizs) lizs at mail.uc.edu
wrote:
Hi, Petsc Team,
I wonder if Petsc has any function like MPI_Bcast() which can
broadcast a value to all processes. If we directly add MPI functions
into the Petsc program, the MPI datatype may be incompatible
On Tue, Oct 1, 2013 at 7:02 PM, Mohammad Mirzadeh mirza...@gmail.comwrote:
It would be half the messages. Why are these vectors separate in the
first place?
I had not worked with block vectors before so just convenience i
guess! When working with blocked vectors, how are items stored? Is
Thanks Matt.
On Tue, Oct 1, 2013 at 5:26 PM, Matthew Knepley knep...@gmail.com wrote:
On Tue, Oct 1, 2013 at 7:02 PM, Mohammad Mirzadeh mirza...@gmail.com
wrote:
It would be half the messages. Why are these vectors separate in the
first place?
I had not worked with block vectors before
On Tue, Oct 1, 2013 at 7:21 PM, Gryllida gryll...@fastmail.fm wrote:
On Wed, 1 Sep 2010 20:54:54 +, Li, Zhisong (lizs) lizs at
mail.uc.edu wrote:
Hi, Petsc Team,
I wonder if Petsc has any function like MPI_Bcast() which can
broadcast a value to all processes. If we directly add MPI
You can use MatTransposeMatMult with an MPIAIJ and a MPIDENSE. (This
is the standard case mentioned earlier, and I don't understand what
Elemental is offering you in this situation. Do you have other dense
matrices running around?)
Perhaps I should give a bit of background on what we are
Hi Satish,
Thanks a lot for your reply!
Is there a way to use the mingw64 which is not shipped with cygwin? For
example, use windows native paths when testing the compiler.
Thanks,
Mengda
On Tue, Oct 1, 2013 at 5:55 PM, Satish Balay ba...@mcs.anl.gov wrote:
Looks like this mingw
S V N Vishwanathan vi...@stat.purdue.edu writes:
You can use MatTransposeMatMult with an MPIAIJ and a MPIDENSE. (This
is the standard case mentioned earlier, and I don't understand what
Elemental is offering you in this situation. Do you have other dense
matrices running around?)
Perhaps
I have a parallel program which reads data and makes a call to a subroutine
that uses petsc. It only needs to read data once. Is it possible to implement
that using MPI and then initialise petsc in the subroutine? Or do I need to
initialise petsc first (and use MPI calls with PETSC_COMM_WORLD)?
Gryllida gryll...@fastmail.fm writes:
I have a parallel program which reads data and makes a call to a
subroutine that uses petsc. It only needs to read data once. Is it
possible to implement that using MPI and then initialise petsc in the
subroutine? Or do I need to initialise petsc first
On Oct 1, 2013, at 7:02 PM, Michele Rosso mro...@uci.edu wrote:
Barry,
I repeated the previous runs since I noticed that it was not using the options
-mg_levels_ksp_max_it 3
They are faster then before now but still slower than my initial test and
anyway the solution time increases
On Wed, 2 Oct 2013, at 13:38, Jed Brown wrote:
Gryllida gryll...@fastmail.fm writes:
I have a parallel program which reads data and makes a call to a
subroutine that uses petsc. It only needs to read data once. Is it
possible to implement that using MPI and then initialise petsc in the
On Tue, 1 Oct 2013, Mengda Wu wrote:
Hi Satish,
Thanks a lot for your reply!
Is there a way to use the mingw64 which is not shipped with cygwin? For
example, use windows native paths when testing the compiler.
Nope - I don't think it will work. Our build tools are primarily work
Hi guys,
I just did something by pure guessing which seems to work and I want
to make sure its the right thing!
I have a specific layout for my vectors that look like this
--
| ghost values | local values | ghost values |
Mark F. Adams mfad...@lbl.gov writes:
run3.txt uses:
-ksp_type richardson
This is bad and I doubt anyone recommended it intentionally.
I would have expected FGMRES, but Barry likes Krylov smoothers and
Richardson is one of a few methods that can tolerate nonlinear
preconditioners.
You
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