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UMFPACK out of memory

 

I was solving a problem with a large mesh, and got the following error. What 
shall I do?

Thanks!

Best,
Chong

BTW: 
These are the software versions:
dolfin: 0.9.7-2~ppa1~hardy1 


 
Solving linear system of size 790534 x 790534 (PETSc LU solver, umfpack).
[0]PETSC ERROR: --------------------- Error Message 
------------------------------------
[0]PETSC ERROR: Error in external library!
[0]PETSC ERROR: umfpack_UMF_numeric failed!
[0]PETSC ERROR: 
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.0.0, Patch 5, Mon Apr 13 09:15:37 CDT 
2009
[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: ./demo on a linux-gnu named carbon by luoxa002 Thu Jul 29 
10:44:50 2010
[0]PETSC ERROR: Libraries linked from 
/build/buildd/petsc-3.0.0.dfsg/linux-gnu-c-opt/lib
[0]PETSC ERROR: Configure run at Wed Jan 20 10:29:37 2010
[0]PETSC ERROR: Configure options --with-shared --with-debugging=0 --useThreads 
0 --with-mpi-dir=/usr/lib/openmpi --with-mpi-shared=1 --with-blas-lib=-lblas-3 
--with-lapack-lib=-llapack-3 --with-umfpack=1 
--with-umfpack-include=/usr/include/suitesparse 
--with-umfpack-lib="[/usr/lib/libumfpack.so,/usr/lib/libamd.so]" 
--with-superlu=1 --with-superlu-include=/usr/include/superlu 
--with-superlu-lib=/usr/lib/libsuperlu.so --with-spooles=1 
--with-spooles-include=/usr/include/spooles 
--with-spooles-lib=/usr/lib/libspooles.so --with-hypre=1 --with-hypre-dir=/usr 
--with-scotch=1 --with-scotch-include=/usr/include/scotch 
--with-scotch-lib=/usr/lib/libscotch.so
[0]PETSC ERROR: 
------------------------------------------------------------------------
[0]PETSC ERROR: MatLUFactorNumeric_UMFPACK() line 176 in 
src/mat/impls/aij/seq/umfpack/umfpack.c
[0]PETSC ERROR: MatLUFactorNumeric() line 2371 in src/mat/interface/matrix.c
[0]PETSC ERROR: PCSetUp_LU() line 222 in src/ksp/pc/impls/factor/lu/lu.c
[0]PETSC ERROR: PCSetUp() line 794 in src/ksp/pc/interface/precon.c
[0]PETSC ERROR: KSPSetUp() line 237 in src/ksp/ksp/interface/itfunc.c
[0]PETSC ERROR: KSPSolve() line 353 in src/ksp/ksp/interface/itfunc.c

UMFPACK V5.2.0 (Nov 1, 2007): ERROR: out of memory