persistent failure on macys

[bqpd]

Geometric Program is not fully bounded:
   Mission1.Aircraft.Engine.EngineConstants.Relax1.R has no lower bound
   Mission1.Aircraft.Engine.EngineConstants.Relax1.g has no lower bound

https://acdl.mit.edu/csi/view/convexengineering/job/gplibrary_Push_Models/189/buildnode=macys,optimizer=mosek/testReport/junit/gpkit.tests.from_paths/TestFiles/test_SPaircraft_py_mosek/

This looks like a divergent approximation (perhaps of a feasibility solve) that occurs after a few GP solves. May be fixed by switching to CCP solves?

[bqpd]

Regardless, if this isn't fixed soon I'll have to take SPaircraft off of GPkit PR tests until it is. :-/

[1ozturkbe]

Oy! I will try to fix this as soon as I can... I do think it is an issue in turbofan unfortunately...

[whoburg]

I assume this is a side effect of one of @1ozturkbe 's recent PRs merged on turbofan? I would much rather see a hacky fix on turbofan (e.g. add an artificial bound on R and g) along with keeping this issue open until that's sorted out, over removing this repo from GPkit tests.

[1ozturkbe]

I will take a look today and let you know.

[bqpd]

ping

…

On Mon, Sep 2, 2019, 11:24 Berk Ozturk ***@***.***> wrote: I will take a look today and let you know. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#137?email_source=notifications&email_token=AALKAGEXKSR3JBUCGRF62YTQHUVYZA5CNFSM4ISEQJ7KYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD5WDA7Q#issuecomment-527183998>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AALKAGEMHFPJNJEB4AGEEELQHUVYZANCNFSM4ISEQJ7A> .

[bqpd]

I can recreate this on linux, so you might be able to on your ACDL machine

…

On Wed, Sep 4, 2019 at 8:54 AM Edward Burnell ***@***.***> wrote: ping On Mon, Sep 2, 2019, 11:24 Berk Ozturk ***@***.***> wrote: > I will take a look today and let you know. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#137?email_source=notifications&email_token=AALKAGEXKSR3JBUCGRF62YTQHUVYZA5CNFSM4ISEQJ7KYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD5WDA7Q#issuecomment-527183998>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AALKAGEMHFPJNJEB4AGEEELQHUVYZANCNFSM4ISEQJ7A> > . >

[1ozturkbe]

argh, I really don't know why this is failing... I may have to hack the model for now to get it to work... I will get it done.

[1ozturkbe]

Argh again, the CPU usage on my ACDL machine is literally 100% on all CPUs, so this will have to wait a little.

[1ozturkbe]

I haven't touched this in a while... I guess time to dig it back up. The reason this is failing is because the engine is giving completely unphysical results when coupled to SPaircraft, mainly in saying fuel burn is 1/10th the original sol'n. No idea why this is happening, because the models are identical to before. Going to PR a fix, but it will definitely not be a satisfactory solution.