Re: [Bug-gsl] SV decomp failure

[Rhys Ulerich]

Hi all,

The first error in Peter's log file follows.  Any ideas?  Is anyone
aware of SVD gotchas on whatever stale version of GCC Apple sees fit
to ship with OS X 10.7.4?

Peter, could you try configuring a debug version (use 'export
CFLAGS="-O0 -g"' prior to configure) to see if you get the same
failure from 'make check' within the linalg directory?

- Rhys

Making check in linalg
make  test
gcc -DHAVE_CONFIG_H -I. -I.. -I..    -g -O2 -c test.c
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g -O2   -o test test.o
libgsllinalg.la ../blas/libgslblas.la ../cblas/libgslcblas.la
../permutation/libgslpermutation.la ../matrix/libgslmatrix.la
../vector/libgslvector.la ../block/libgslblock.la
../complex/libgslcomplex.la ../ieee-utils/libgslieeeutils.la
../err/libgslerr.la ../test/libgsltest.la ../sys/libgslsys.la
../utils/libutils.la -lm
libtool: link: gcc -g -O2 -o test test.o  ./.libs/libgsllinalg.a
../blas/.libs/libgslblas.a ../cblas/.libs/libgslcblas.a
../permutation/.libs/libgslpermutation.a
../matrix/.libs/libgslmatrix.a ../vector/.libs/libgslvector.a
../block/.libs/libgslblock.a ../complex/.libs/libgslcomplex.a
../ieee-utils/.libs/libgslieeeutils.a ../err/.libs/libgslerr.a
../test/.libs/libgsltest.a ../sys/.libs/libgslsys.a
../utils/.libs/libutils.a -lm
make  check-TESTS
(caught [svd.c:149: SVD decomposition failed to converge (11)])
returned error code 11 = exceeded max number of iterations
singular value 0 =                     -1 < 0
singular value 1 =                      0 vs previous                     -1
singular value 2 =    17.3205080756888137 vs previous                      0
(  3,  3)[0,2]:    15.2508026013158453                        0
(  3,  3)[1,2]:    8.21054322293596961                        1
(  3,  3)[2,1]:                      0                        1
FAIL:   SV_decomp (3x3) A=[ 0, 0, 0; 0, 0, 1; 1, 1, 0] [852]