Custom branch and bound implementation using HiGHS (rust crate)

[DaveLanday]

I want to use highs in my own implementation of Branch and Bound. I am using the highs.rs crate. Will I have to set the option mip_max_nodes to 1 in order to achieve this? If no one has familiarity with the highs.rs crate, how is this done in general? I asked in a discussion at the highs.rs repo but did not get a clarifying or direct response.

[jajhall]

If you're wanting to use HiGHS to solve LP problems for a model with integrality values set to HighsVarType::kInteger, just set the solve_relaxation option to true

[DaveLanday]

Ok! Thank you; I thought there might be an option to do this but wasn't sure. I will try this!

[DaveLanday]

Hi @jajhall, is there a way to read an MPS file using the highs.rs crate, or is an mps file reader missing from the rust implementation? So far, I have only found two mps readers/parsers written in rust and neither can handle lines that look like the following:
INT1 'MARKER' 'INTORG'