out of memory error

[li pan]

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
> 
> 
> 
> 



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