Re: [Bug-gsl] multifit test failures for Solaris x86 with libgsl 2.1

[Patrick Alken]

Hello,

  Yes this is a known issue with 32 bit builds that we're looking into.
For a quick fix, in each test_*.c file in multifit, you will find an
"epsrel" parameter. You can increase this parameter to make the tests pass.

Thanks,
Patrick

On 12/08/2015 05:12 PM, Rich Burridge wrote:
> Hi,
>
> I'm finally getting around to integrating libgsl 2.1 into Solaris 12.
> One thing I've noticed is that I'm now seeing multifit test failures
> on the x86 platform but only for 32-bit (64-bit is fine):
>
> ...
> Making check in multifit
> /usr/gnu/bin/make  test
> /usr/gnu/bin/make  check-TESTS
> FAIL: lmsder/scale=1/wnlin_internal_weights i=0 (5.17378552263401126
> observed vs 5.17378551196259195 expected) [190002]
> FAIL: lmsder/scale=1/wnlin_internal_weights i=1 (0.111041758485330988
> observed vs 0.111041758006851149 expected) [190003]
> FAIL: lmsder/scale=1/wnlin_internal_weights i=2 (1.05282724326308363
> observed vs 1.05282724070446099 expected) [190004]
> FAIL: lmsder/scale=1/weights/wnlin_internal_weights i=0
> (5.17378552263401126 observed vs 5.17378551196259195 expected) [190007]
> FAIL: lmsder/scale=1/weights/wnlin_internal_weights i=1
> (0.111041758485330988 observed vs 0.111041758006851149 expected) [190008]
> FAIL: lmsder/scale=1/weights/wnlin_internal_weights i=2
> (1.05282724326308363 observed vs 1.05282724070446099 expected) [190009]
> FAIL: ridge/lmsder/wnlin_internal_weights i=0 (5.17378552263401126
> observed vs 5.17378551196259195 expected) [190022]
> FAIL: ridge/lmsder/wnlin_internal_weights i=1 (0.111041758485330988
> observed vs 0.111041758006851149 expected) [190023]
> FAIL: ridge/lmsder/wnlin_internal_weights i=2 (1.05282724326308363
> observed vs 1.05282724070446099 expected) [190024]
> FAIL: lmsder/scale=1/wnlin_external_weights i=0 (5.17378552263401126
> observed vs 5.17378551196259195 expected) [190042]
> FAIL: lmsder/scale=1/wnlin_external_weights i=1 (0.111041758485330988
> observed vs 0.111041758006851149 expected) [190043]
> FAIL: lmsder/scale=1/wnlin_external_weights i=2 (1.05282724326308363
> observed vs 1.05282724070446099 expected) [190044]
> FAIL: ridge/lmsder/wnlin_external_weights i=0 (5.17378552263401126
> observed vs 5.17378551196259195 expected) [190052]
> FAIL: ridge/lmsder/wnlin_external_weights i=1 (0.111041758485330988
> observed vs 0.111041758006851149 expected) [190053]
> FAIL: ridge/lmsder/wnlin_external_weights i=2 (1.05282724326308363
> observed vs 1.05282724070446099 expected) [190054]
> FAIL: test
> ==================
> 1 of 1 test failed
> ==================
> make[3]: [check-TESTS] Error 1 (ignored)
> ...
>
> Is this another case where the tolerances just need to be tweaked,
> similar to what we recently did with the linalg tests?
>
> See:
>
>   http://lists.gnu.org/archive/html/help-gsl/2015-05/msg00001.html
>   http://lists.gnu.org/archive/html/help-gsl/2015-06/msg00000.html
>
> Thanks.
>
>
>