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Eigenvalue calculation aborts
From: |
Muthiah Annamalai |
Subject: |
Eigenvalue calculation aborts |
Date: |
Thu, 4 Feb 2010 23:38:16 -0600 |
Hello there,
I have been using 64-bit Octave version 3.2.3 compiled on Ubuntu 9.10.
For the most part Octave solves my problem great. For large data size
( sparse matrix size > 4GB)
the eigenvalue calculation in the following code aborts. QDs is sparse
and symmetric.
QDs = [real(QDs); imag(QDs)];
G = QDs*(QDs.');
l = eig( G );
flipud(l)
I saw this post here,
http://old.nabble.com/R:-eigs-crash-on-a-particular-sparse-matrix-td26423079.html
,
but I'd like to know any new developments to overcome the problem, or
try and use like the posted
suggestion, G = G + j*eps;
My Octave configuration goes like this:
Configuration
-----------------------------------------------
uname output: Linux fresnel 2.6.31-17-generic #54-Ubuntu SMP Thu
Dec 10 17:01:44 UTC 2009 x86_64 GNU/Linux
configure opts: '--prefix=/usr' '--enable-shared' '--enable-64'
Fortran compiler: gfortran
FFLAGS: -O
FLIBS: -L/usr/X11R6/lib
-L/usr/lib/gcc/x86_64-linux-gnu/4.4.1
-L/usr/lib/gcc/x86_64-linux-gnu/4.4.1/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.4.1/../../..
-L/usr/lib/x86_64-linux-gnu -l$
CPPFLAGS: -I/usr/include/freetype2
INCFLAGS: -I. -I. -I./liboctave -I./src -I./libcruft/misc
C compiler: gcc, version 4.4.1 (Ubuntu 4.4.1-4ubuntu8)
CFLAGS: -g -O2
CPICFLAG: -fPIC
C++ compiler: g++, version 4.4.1
CXXFLAGS: -g -O2 -I/usr/include/freetype2
CXXPICFLAG: -fPIC
LD_CXX: g++
LDFLAGS:
LIBFLAGS: -L.
RLD_FLAG: -Wl,-rpath -Wl,/usr/lib/octave-3.2.3
BLAS_LIBS: -llapack -lblas
FFTW_LIBS: -lfftw3 -lfftw3f
LIBS: -lreadline -lncurses -ldl -lz -lm -lfreetype -lz
-L/usr/X11R6/lib -lGL -lGLU
LEXLIB:
LIBGLOB:
SED: /bin/sed
DEFS:
-DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
-DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DPACKAGE_URL=""
Thanks,
-Muthu
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