Hi,
Yes, that solved the problem!
Thank you guys for all the help.
I really appreciate it.
Huan
--------------------------------------------------
From: <[email protected]>
Sent: Tuesday, December 01, 2009 4:15 AM
To: "Huan Sun" <[email protected]>
Cc: <[email protected]>
Subject: Re: [deal.II] problem with METIS
Hi,
have you startet your program with
mpirun -n 4 ./program
?
where after "-n" you set the number of cpus to be used (4 in this
example).
Thomas
-------------------------------------------------
On Tue, 1 Dec 2009, Huan Sun wrote:
Hi Thomas,
Thanks so much the help. Now I can compile and run both step-17 and 18.
However deal.ii code finds only one mpi communicator so everything turns
out to be serial. I was running the program on a computer with multiple
cpus, not on a cluster. Is that the way it should be?
Thanks,
Huan
On Mon, 2009-11-30 at 09:53 +0100, [email protected]
wrote:
> Hi,
>
> I think you should specify the variable LD_LIBRARY_PATH in your system.
>
> Something like (in your .bashrc or .profile)
>
> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:path_to_libmpichcxx; export
> LD_LIBRARY_PATH
>
> or in your .tcshrc, if you have the tcsh shell
>
> setenv LD_PATH $LD_LIBRARY_PATH
> setenv LD_LIBRARY_PATH $LD_PATH:path_to_libmpichcxx
>
> where "path_to_libmpichcxx" is something like
> /ima/home/hsun/petsc/externalpackages/mpich2-1.0.8/lib
>
>
> Thomas
>
> -------------------------------------------------
>
> On Mon, 30 Nov 2009, Huan Sun wrote:
>
> > Hi all,
> >
> > Thanks for the help.
> >
> > Somehow I got a new prblem -- I am new to the MPI area.
> > I enable the MPI download when configuring Petsc following the
> > instructions in FAQ on deal.ii webpage. Everything works fine. And I
> > configured deal.ii's compilers as Toby and Thomas suggested:
> >
> > ./configure --disable-threads --enable-shared
> > CC=/ima/home/hsun/petsc/externalpackages/mpich2-1.0.8/bin/mpicc
> > CXX=/ima/home/hsun/petsc/externalpackages/mpich2-1.0.8/bin/mpicxx
> >
> > deal.ii complained it cannot find -lmpichcxx.
> >
> >
> > ======================optimized========= Linking library:
> > libpetscall.so
> > ======================debug============= Linking library:
> > libpetscall.g.so
> > /usr/bin/ld: cannot find -lmpichcxx
> > collect2: ld returned 1 exit status
> > make[1]: *** [libpetscall.so] Error 1
> > make[1]: *** Waiting for unfinished jobs....
> > /usr/bin/ld: cannot find -lmpichcxx
> > collect2: ld returned 1 exit status
> > make[1]: *** [libpetscall.g.so] Error 1
> >
> > I wonder if any more options I need to specify when configuring
> > deal.ii.
> >
> > Thanks a lot!
> >
> > Huan
> >
> >
> >
> >
> >
> >
> > On Sun, 2009-11-29 at 14:55 +0100, Toby D. Young wrote:
> > > > [0]PETSC ERROR: Configure run at Fri Nov 27 23:13:43 2009
> > > > [0]PETSC ERROR: Configure
> > > > options --with-cc=gcc --with-fc=gfortran --with-cxx=g++
--download-f-blas-lapack=1
> > > > --download-mpich=1 --with-shared=1 --with-dynamic=1 --with-clanguage=C++
> > > > --with-x=0
> > >
> > > In any case, to run step-17 on multi processors (which I think you
> > > are
> > > trying to do here), you will need to be compiling with MPI. This
> > > means
> > > configuring PETSc with:
> > > --with-mpi=1 --with-mpi-dir=path/to/mpi
> > > and configuringdealii with the same compilers by:
> > > CC=mpicc CXX=mpicxx
> > >
> > > As Thomas pointed out, there is some wierdness using the DataOut
> > > class
> > > with PETSc when threading is enabled. Try configuring
> > > dealii with:
> > > --disable-threads
> > > to be sure to get step-17 to run. Step-18 does not use DataOut in
> > > the same
> > > way and seems to somehow avoid these problems.
> > >
> > > There are other hints on the dealii FAQ which can help you get
> > > things
> > > working the way you really want them to. Maybe that helps?
> > >
> > > Best,
> > > Toby
> > >
> > >
> > > -----
> > >
> > > Toby D. Young
> > > Assistant Professor
> > > Philosophy-Physics
> > > Polish Academy of Sciences
> > > Warszawa, Polska
> > >
> > > www: http://www.ippt.gov.pl/~tyoung
> > > skype: stenografia
> >
> >
> > _______________________________________________
> > dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
> >
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