out of memory error

[li pan]

hi Gideon,
is the matrix big? I used to calculate one with more
than 1 million rows on a PC equiped with 3 GB memory.

pan


--- Gideon Simpson <grs2103 at columbia.edu> wrote:

> Matrix Object:
>    type=seqaij, rows=218898, cols=218898
>    total: nonzeros=20389756, allocated
> nonzeros=20389756
>      not using I-node routines
> 
> On Mar 6, 2008, at 2:36 AM, li pan wrote:
> 
> > hi Gideon,
> > can I ask you how big is the nonzero allocation of
> > your sparse matrix?
> >
> > pan
> >
> >
> > --- Gideon Simpson <grs2103 at columbia.edu> wrote:
> >
> >> I'm getting the following error with some code,
> >> running on a serial
> >> machine with, i think, 3 gigs of memory.  Is
> there
> >> anyway to
> >> circumvent this error by being clever, or do I
> >> really need to go to a
> >> distributed memory machine?
> >>
> >> -gideon
> >>
> >> Out of memory trying to allocate 112032952 bytes
> >> [0]PETSC ERROR:
> >>
> >
>
------------------------------------------------------------------------
> >> [0]PETSC ERROR: Caught signal number 10 BUS: Bus
> >> Error, possibly
> >> illegal memory access
> >> [0]PETSC ERROR: Try option -start_in_debugger or
> -
> >> on_error_attach_debugger
> >> [0]PETSC ERROR: or see
> >>
> >
>
http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal
> >>
> >> [0]PETSC ERROR: or try http://valgrind.org on
> linux
> >> or man libgmalloc
> >> on Apple to find memory corruption errors
> >> [0]PETSC ERROR: likely location of problem given
> in
> >> stack below
> >> [0]PETSC ERROR: ---------------------  Stack
> Frames
> >>
> >> ------------------------------------
> >> [0]PETSC ERROR: Note: The EXACT line numbers in
> the
> >> stack are not
> >> available,
> >> [0]PETSC ERROR:       INSTEAD the line number of
> the
> >> start of the
> >> function
> >> [0]PETSC ERROR:       is given.
> >> [0]PETSC ERROR: [0] PCSetUp_HYPRE line 95
> >> src/ksp/pc/impls/hypre/hypre.c
> >> [0]PETSC ERROR: [0] PCSetUp line 764
> >> src/ksp/pc/interface/precon.c
> >> [0]PETSC ERROR: [0] KSPSetUp line 183
> >> src/ksp/ksp/interface/itfunc.c
> >> [0]PETSC ERROR: [0] KSPSolve line 305
> >> src/ksp/ksp/interface/itfunc.c
> >> [0]PETSC ERROR: --------------------- Error
> Message
> >>
> >> ------------------------------------
> >> [0]PETSC ERROR: Signal received!
> >> [0]PETSC ERROR:
> >>
> >
>
------------------------------------------------------------------------
> >> [0]PETSC ERROR: Petsc Release Version 2.3.3,
> Patch
> >> 8, Fri Nov 16
> >> 17:03:40 CST 2007 HG revision:
> >> 414581156e67e55c761739b0deb119f7590d0f4b
> >> [0]PETSC ERROR: See docs/changes/index.html for
> >> recent updates.
> >> [0]PETSC ERROR: See docs/faq.html for hints about
> >> trouble shooting.
> >> [0]PETSC ERROR: See docs/index.html for manual
> >> pages.
> >> [0]PETSC ERROR:
> >>
> >
>
------------------------------------------------------------------------
> >> [0]PETSC ERROR: ./bulk3d on a darwin8.1 named
> >> valkyrie.appmath.columbia.edu by gideon Wed Mar 
> 5
> >> 15:53:26 2008
> >> [0]PETSC ERROR: Libraries linked from
> >> /Users/gideon/software/
> >> petsc-2.3.3-p8/lib/darwin8.11.1-cxx-debug
> >> [0]PETSC ERROR: Configure run at Thu Jan 10
> 11:00:45
> >> 2008
> >> [0]PETSC ERROR: Configure options
> >> --with-clanguage=cxx --with-mpi-dir=/
> >> Users/gideon/software --with-mpi-shared=1
> --with-x11
> >> --download-
> >> hypre=1 --with-hypre=1 --download-umfpack=1
> >> --with-umfpack=1 --with-
> >> shared=1 --with-dynamic=1
> >> [0]PETSC ERROR:
> >>
> >
>
------------------------------------------------------------------------
> >> [0]PETSC ERROR: User provided function() line 0
> in
> >> unknown directory
> >> unknown file
> >>
> >>
> >>
> >>
> >
> >
> >
> >       
> >
>
____________________________________________________________________________________
> > Never miss a thing.  Make Yahoo your home page.
> > http://www.yahoo.com/r/hs
> >
> 
> 



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