[Insight-developers] CDash at Home Windows builds

[Brian Helba]

Hello again all,

The Windows CDash at Home client is online again and has now fully caught up
with its backlog of queued experimental builds.

The 8 tests that were failing today [1] on that machine should also be
fixed now. The problem was due to 2 corrupt Baseline files which didn't
match their correct MD5, likely caused by an unfortunately timed reboot.
The issue has been corrected for future builds.

Changes to the logging configuration on that machine have also revealed a
bug in itkSampleToHistogramFilterTest2 and itkSampleToHistogramFilterTest6,
where these tests were not properly failing. Indeed, these tests should
have been failing more regularly, as the tested class,
SampleToHistogramFilter, has a troublesome bug whereby some optimized
builds of MSVC are producing incorrect behavior inside a loop [2]. I've
reproduced the failure, albeit with some difficulty, as attaching any sort
of debugging to the inner loop changes its behavior and prevents the
failure [3]. I'm still actively working on the issue. In the meantime, I've
reduced the level of build logging so that the 2 tests in question no
longer timeout.

I'll continue to monitor future builds closely, if any new issues pop up.

[1] http://open.cdash.org/viewTest.php?buildid=3224829
[2]
http://itk.org/gitweb?p=ITK.git;a=blob;f=Modules/Numerics/Statistics/include/itkSampleToHistogramFilter.hxx;h=7c9f72fa2ecc35bfea8c49dfb120e1a1f5380e5e;hb=HEAD#l222
[3] http://en.wikipedia.org/wiki/Heisenbug

Best,
Brian





On Fri, Feb 14, 2014 at 10:23 AM, Brian Helba <brian.helba at kitware.com>wrote:

> Hi all,
>
> Please note that automated Windows builds (a.k.a. CDash at Home) for ITK
> patches on Gerrit will be offline for a while.
>
> The machine that does them ("dash5win7x64") is down for maintenance, as we
> do some upgrades to improve its performance. I hope to have it back up by
> tonight or tomorrow.
>
> Sorry for the inconvenience,
> Brian
>
> --
> Brian Helba
> Medical Imaging
> Kitware, Inc.
>



-- 
Brian Helba
Medical Imaging
Kitware, Inc.
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