What's wrong with the Symmetric Rank one method?

[mcgarnett]

The manual mentions that it's "not working well" but it's working great for my problem, showing much more robust convergence than L-BFGS. Any caveats about using it?

[svigerske]

I guess that it didn't work well in general. There are a number of TODOs in the code that indicate that the implementation should be improved: https://github.com/coin-or/Ipopt/blob/stable/3.14/src/Algorithm/IpLimMemQuasiNewtonUpdater.cpp#L523