'KineticsAddSpecies.add_species_sequential' test failed

[sagitter]

Hello.

KineticsAddSpecies.add_species_sequential is failed with these errors:

[ RUN      ] KineticsAddSpecies.add_species_sequential
test/kinetics/kineticsFromScratch.cpp:427: Failure
Value of: w[i]
  Actual: 217.99038879671906
Expected: w_ref[iref]
Which is: 217.99038879671923
sp = H2O2; N = 4
test/kinetics/kineticsFromScratch.cpp:427: Failure
Value of: w[i]
  Actual: 248034692.62737739
Expected: w_ref[iref]
Which is: 248034692.62737754
sp = H2; N = 5
test/kinetics/kineticsFromScratch.cpp:427: Failure
Value of: w[i]
  Actual: 248033565.55450577
Expected: w_ref[iref]
Which is: 248033565.55450591
sp = O2; N = 5
[  FAILED  ] KineticsAddSpecies.add_species_sequential (130 ms)

Full log: https://kojipkgs.fedoraproject.org//work/tasks/2418/16092418/build.log

Cantera is built on a Enterprise Linux 7 system (Fedora, EPEL7), PowerPC64le architecture with this software: https://kojipkgs.fedoraproject.org//work/tasks/2418/16092418/root.log

[speth]

This may be a bit challenging to fix, since this error doesn't occur on any of the platforms where I regularly compile Cantera, and I don't have access to a machine that uses the POWER8 architecture. This isn't a test where I would expect platform-specific failures -- the set of actual rate calculations done for each half of the comparison should be identical, and I'm hesitant to just allow an inexact comparison here without digging into it a bit.

I modified the test cases to make some additional checks. If you can provide the output of running the test suite for the current version (50d0f99), it might help a bit. Some other information that would be helpful:

• What other platforms/architectures are packages being built for, and are there any issues with any of them?
• Has the test suite been running successfully previously on this platform? If so, can you identify the commit where the test started failing?
• How are these builds being run? Is this automated off of Github/master, or are they triggered manually? Are the build logs for all platforms available? Is there a way to trigger builds for a branch or PR (i.e. without making new commits to master)?

[sagitter]

Let me do some tests.

[speth]

@sagitter Unless you can provide some more details about this, I'm inclined to close this bug on the basis of it being unreproducible.