[Bug-gsl] ppc64le: linalg test failed

[James Ostrander]

Hi, I wanted to report a test failure in git master.

make check:

make[3]: Leaving directory '/home/u0017592/projects/gsl/cblas'
make[2]: Leaving directory '/home/u0017592/projects/gsl/cblas'
make[1]: Leaving directory '/home/u0017592/projects/gsl/cblas'
Making check in blas
make[1]: Entering directory '/home/u0017592/projects/gsl/blas'
make[1]: Nothing to be done for 'check'.
make[1]: Leaving directory '/home/u0017592/projects/gsl/blas'
Making check in linalg
make[1]: Entering directory '/home/u0017592/projects/gsl/linalg'
make  test
make[2]: Entering directory '/home/u0017592/projects/gsl/linalg'
gcc -DHAVE_CONFIG_H -I. -I..  -I..   -g -O2 -MT test.o -MD -MP -MF
.deps/test.Tpo -c -o test.o test.c
mv -f .deps/test.Tpo .deps/test.Po
/bin/bash ../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 ../rng/libgslrng.la -lm
libtool: link: gcc -g -O2 -o .libs/test test.o  ./.libs/libgsllinalg.a
../blas/.libs/libgslblas.a ../cblas/.libs/libgslcblas.so
../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 ../rng/.libs/libgslrng.a
-lm
make[2]: Leaving directory '/home/u0017592/projects/gsl/linalg'
make  check-TESTS
make[2]: Entering directory '/home/u0017592/projects/gsl/linalg'
make[3]: Entering directory '/home/u0017592/projects/gsl/linalg'
FAIL: test
============================================================================
Testsuite summary for gsl 2.3+
============================================================================
# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0
============================================================================
See linalg/test-suite.log
============================================================================
Makefile:762: recipe for target 'test-suite.log' failed
make[3]: *** [test-suite.log] Error 1
make[3]: Leaving directory '/home/u0017592/projects/gsl/linalg'
Makefile:868: recipe for target 'check-TESTS' failed
make[2]: *** [check-TESTS] Error 2
make[2]: Leaving directory '/home/u0017592/projects/gsl/linalg'
Makefile:941: recipe for target 'check-am' failed
make[1]: *** [check-am] Error 2
make[1]: Leaving directory '/home/u0017592/projects/gsl/linalg'
Makefile:973: recipe for target 'check-recursive' failed
make: *** [check-recursive] Error 1


linalg/test-suite.log contents:

=====================================
   gsl 2.3+: linalg/test-suite.log
=====================================

# TOTAL: 1
# PASS:  0
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: test
==========

FAIL: COD_lssolve lin2 res ( 20,  5)[0]: -7.02155399878759765e-16
1.11022302462515654e-16
 (-7.02155399878759765e-16 observed vs 1.11022302462515654e-16 expected)
[153964]
FAIL: COD_lssolve lin2 res ( 20,  5)[1]: -1.70459744688110515e-19
2.22044604925031308e-16
 (-1.70459744688110515e-19 observed vs 2.22044604925031308e-16 expected)
[153965]
FAIL: COD_lssolve lin2 res ( 20,  5)[2]: -1.8959167034375034e-16
4.44089209850062616e-16
 (-1.8959167034375034e-16 observed vs 4.44089209850062616e-16 expected)
[153966]
FAIL: COD_lssolve lin2 res ( 20,  5)[3]: -3.40919489375832763e-19
4.44089209850062616e-16
 (-3.40919489375832763e-19 observed vs 4.44089209850062616e-16 expected)
[153967]
FAIL: COD_lssolve lin2 res ( 20,  5)[4]: 1.88909831364999159e-16
8.88178419700125232e-16
 (1.88909831364999159e-16 observed vs 8.88178419700125232e-16 expected)
[153968]
FAIL: pcholesky_invert unscaled hilbert (  4,  4)[0,2]:
-2.55795384873636067e-13                        0
 (-2.55795384873636067e-13 observed vs 0 expected) [650818]
FAIL: mcholesky_invert unscaled hilbert (  4,  4)[0,2]:
-2.55795384873636067e-13                        0
 (-2.55795384873636067e-13 observed vs 0 expected) [789499]
FAIL test (exit status: 1)


gcc version:

gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005


Any idea on the cause? Is it an error in the test, or would that component
actually produce invalid results?

-- 
*James Ostrander*
*ITS Administrative Info Srvcs*