Xpress.jl

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Use MIP solution pool to save suboptimal MIP results

1

joaquimg

Mismatch between solution returned and best found solution in solver log

6

**We encountered a difference between the best found solution in the solver log for Xpress 9.2:** ``` Concurrent statistics: Dual: 116729 simplex iterations, 64.75s Barrier: 500 barrier and 63482 simplex...

zolanaj

Prep for v0.17.0

1

I'm open to a discussion on whether this should be v0.16.3 or v0.17.0. The argument for v0.17.0 is that it is a rather large change: https://github.com/jump-dev/Xpress.jl/compare/v0.16.2...master The main breakage risks...

odow

Second Order Cone Constraints in Briged Optimizer

3

Add to MOI wrapper

joaquimg

Detection of non-linear/non-convex problem

7

The current implementation calls a different optimization routine depending on internal classification schemes ```julia if model.has_nlp_constraints @checked Lib.XPRSnlpoptimize(model.inner, model.solve_method) elseif is_mip(model) @checked Lib.XPRSmipoptimize(model.inner, model.solve_method) else @checked Lib.XPRSlpoptimize(model.inner, model.solve_method) end ```...

trulsf

This PR addresses the problems referred to in #274. This will allow more recent versions of Xpress to use correct algorithms based on internal analysis (which is needed e.g. to...

trulsf

SIGINT handling

1

Hitting control + C in during a`MIP` solve in the Julia REPL doesn't seem to terminate the Xpress instance properly. The REPL prompt comes back, but memory use stays high...

luke-kiernan