Re: [bug #20821] Optimisation failure / round error on windows 64 bit -- June 20, 2013

Ok, then we'll have to go with that.  It's good that the icons are
back :)  Could I ask you to make one more small change to patch3
(https://gna.org/support/download.php?file_id=18123).  Could you add a
line or two to the comments with information about the WinPython
version that you are using, and anything else to do with WinPython
that you think might be important?  It would be good to make it clear
in the comments that this is not results from the official Python
sources.

Cheers,

Edward



On 20 June 2013 13:11, Troels Emtekær Linnet <tlinnet@xxxxxxxxx> wrote:

The te, should have places=1, since else I get the error.

Traceback (most recent call last):
  File "C:\WinPython27\relax_disp_64\test_suite\system_tests\model_free.py",
line 1782, in test_opt_constr_cd_mt_S2_0_970_te_2048_Rex_0_149
    self.value_test(spin, select=select, s2=s2, te=te, rex=rex, chi2=chi2)
  File "C:\WinPython27\relax_disp_64\test_suite\system_tests\model_free.py",
line 3142, in value_test
    self.assertAlmostEqual(spin.te / 1e-12, te, places=2, msg=mesg)
AssertionError: Optimisation failure.


And I am enjoying the icons in the menu. :-)

/Troels



2013/6/20 Edward d'Auvergne <edward@xxxxxxxxxxxxx>:

Does this work with places=2 or 3 for the te value?  That would be
better.  The precision is shocking, I have to say.  I would suggest
that in the comments, that something about this being the WinPython
distribution would also be useful for these precision records.  I
would not think that it is the Microsoft C compiler that is a problem,
but rather the numpy packages bundled with this Python derivative.
The Microsoft compiler has never been an issue before, so I would
suggest that the WinPython people have a precision bug in their code.
Or maybe they have deliberately turned down their precision so that it
appears as if their distribution is much faster than standard
Python+numpy?  Is it also WinPython that has problems with icons in
the menus?

Regards,

Edward


On 20 June 2013 09:18, Troels E. Linnet
<NO-REPLY.INVALID-ADDRESS@xxxxxxx> wrote:

Follow-up Comment #5, bug #20821 (project relax):

Reply to bug #20821: (https://gna.org/bugs/?20821) Optimisation failure /
round error on windows 64 bit

I experienced more precision problems.

I had a terrible need, to turn down precision, quite a lot.

So much, that I think something is wrong with the MS
Visual Studio Express """ Professional """ 64 bit compilation.

-            self.assertAlmostEqual(spin.s2, s2, msg=mesg)
+            self.assertAlmostEqual(spin.s2, s2, places=6, msg=mesg)

-            self.assertAlmostEqual(spin.te / 1e-12, te, 5, msg=mesg)
+            self.assertAlmostEqual(spin.te / 1e-12, te, places=1, 
msg=mesg)

-            self.assertAlmostEqual(spin.rex * (2.0 * pi *
cdp.spectrometer_frq[cdp.ri_ids[0]])**2, rex * (2.0 * pi *
cdp.spectrometer_frq[cdp.ri_ids[0]])**2, msg=mesg)
+            self.assertAlmostEqual(spin.rex * (2.0 * pi *
cdp.spectrometer_frq[cdp.ri_ids[0]])**2, rex * (2.0 * pi *
cdp.spectrometer_frq[cdp.ri_ids[0]])**2, places=4, msg=mesg)

        # Optimisation values.
        s2 = 0.9699999999999995
        te = 2048.000000000022283
        rex = 0.14900000000000566 / (2.0 * pi *
cdp.spectrometer_frq[cdp.ri_ids[0]])**2

My value
# s2: 0.9700002183674102 : Diff -2.18367410709e-07
# te: 2048.015293187 Diff: -0.0152931869779
# rex: 0.14899473115727899 Diff: 5.26884272667e-06

# 64-bit Windows 7 (https://gna.org/bugs/?20821).
# System: Windows
# Release: 7
# Version: 6.1.7601
# Architecture: 64bit WindowsPE
# Machine: AMD64
# Processor: Intel64 Family 6 Model 37 Stepping 2, GenuineIntel
# Python version: 2.7.5
# numpy version: 1.7.1
# Compilation: Visual Studio Express 2012, Professional, for 64 bit
compilation
# s2: 0.9700002183674102
# te: 2048.015293187
# rex: 0.14899473115727899
# chi2: 2.3195994119090742e-10
# iter: 116
# f_count: 411
# g_count: 411
# h_count: 0
# warning: None

(file #18123)
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File name: patch3                         Size:2 KB


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  <http://gna.org/bugs/?20821>

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Re: [bug #20821] Optimisation failure / round error on windows 64 bit

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