Update CI scripts

[amontoison]

No description provided.

[coveralls]

Coverage increased (+0.2%) to 97.466% when pulling 51170de on amontoison:ci into 31a876a on JuliaSmoothOptimizers:master.

[dpo]

Thanks. Should we at least keep 1.3 since that's the minimum version in Project.toml?

[amontoison]

Yes, good idea.

[dpo]

Any idea why this errors out only on AMD? https://travis-ci.org/github/JuliaSmoothOptimizers/Krylov.jl/jobs/722902656#L558

[amontoison]

No 🤔 I modified the check_min_norm function a little bit to solve this problem.

[dpo]

Yes, the problem is probably that Julia tries to compute the LU of AA', which is singular. But we only need the QR of A', not of AA'.

[amontoison]

You're right !

[dpo]

Still failing. How about x = Q * (R' \ b)?

[amontoison]

I forgot to swap R and Rᵀ...
With QR = Aᵀ, AAᵀ = RᵀR and I should use the following code:

QR = qr(AI')
xmin = AI' * (QR.R \ (QR.R' \ b))

[dpo]

Sure, although multiplying by Q should be less prone to errors than another triangular solve and multiplying by A'.

[codecov]

Codecov Report

Merging #211 into master will increase coverage by 0.09%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #211      +/-   ##
==========================================
+ Coverage   97.16%   97.26%   +0.09%     
==========================================
  Files          28       29       +1     
  Lines        2504     2997     +493     
==========================================
+ Hits         2433     2915     +482     
- Misses         71       82      +11     

Impacted Files	Coverage Δ
src/cr.jl	57.23% <0.00%> (-2.31%)	⬇️
src/craig.jl	96.72% <0.00%> (-0.37%)	⬇️
src/cg.jl	100.00% <0.00%> (ø)
src/cgs.jl	100.00% <0.00%> (ø)
src/qmr.jl	100.00% <0.00%> (ø)
src/bilq.jl	100.00% <0.00%> (ø)
src/cgls.jl	100.00% <0.00%> (ø)
src/cgne.jl	100.00% <0.00%> (ø)
src/crls.jl	100.00% <0.00%> (ø)
src/crmr.jl	100.00% <0.00%> (ø)
... and 17 more

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[dpo]

🎉