the line search routine reached the maximum number of iterations about lbfgspp

[yixuan]

Hi @hyl317, the error message is about the line search procedure, not the overall iterations. The parameter to control it is param.max_linesearch.

[GPrathap]

Hi @yixuan, Is there is a proper way to handle these kinds of errors rather than handling runtime exceptions?

[yixuan]

This commit has removed major runtime exceptions when maximum number of line searches is reached, which should resolve most of the issues above.

There remain some exceptions in the code, which are mostly "serious" issues that are hard to proceed.

Let me first mark this as closed. Feel free to reopen if further issues occur.